New Elementary Operator for Kaon Photoproduction on the Nucleon and Nuclei

Jovan Alfian Djaja; Terry Mart

arxiv: 2510.15482 · v1 · submitted 2025-10-17 · ⚛️ nucl-th · hep-ph

New Elementary Operator for Kaon Photoproduction on the Nucleon and Nuclei

Terry Mart , Jovan Alfian Djaja This is my paper

Pith reviewed 2026-05-18 06:28 UTC · model grok-4.3

classification ⚛️ nucl-th hep-ph

keywords kaon photoproductionelementary operatorbaryon resonancesnucleonnucleihypernuclear photoproductionPauli spaceisospin channels

0 comments

The pith

A new operator for kaon photoproduction fits resonance couplings to data and is cast in Pauli space for nuclear use.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper constructs a new elementary operator for kaon photoproduction on nucleons and nuclei inside a Feynman diagrammatic framework. Unknown coupling strengths at the electromagnetic and hadronic vertices of the included baryon resonances are adjusted by fitting to all available experimental data in the six isospin channels. The resulting model reproduces the measurements well. The operator is written in Pauli space so that it can be applied directly to nuclear reactions such as hypernuclear photoproduction, and several forms are given that separate frame-dependent quantities like spin operators and photon polarization vectors.

Core claim

Within a Feynman diagrammatic approach the authors build an elementary operator that incorporates 26 nucleon resonances for the K Lambda channels and 17 additional Delta resonances for the K Sigma channels. The unknown coupling constants at the electromagnetic and hadronic vertices are determined by a fit to the complete set of available data across all six isospin channels, producing good agreement with experiment. For applications to nuclei the operator is expressed in Pauli space, permitting a straightforward nonrelativistic reduction, and alternative representations are supplied in which spin operators and photon polarization vectors are factored out to increase versatility.

What carries the argument

The elementary operator constructed from Feynman diagrams with resonance exchanges, formulated in Pauli space and with options to isolate frame-dependent spin and polarization factors.

If this is right

The operator can be inserted directly into calculations of hypernuclear photoproduction without additional relativistic reductions.
Separation of spin operators and photon polarization vectors allows the same elementary amplitude to be evaluated in different nuclear reference frames.
Agreement across all six isospin channels supports the use of the same resonance set for both K Lambda and K Sigma final states in nuclear environments.
The nonrelativistic Pauli-space form simplifies implementation in many-body nuclear codes that employ nonrelativistic kinematics.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

The operator could be tested by comparing predicted hypernuclear production rates on specific targets with new experimental data not used in the original fit.
If final-state interactions or medium modifications prove important, they could be added on top of this elementary operator in future nuclear calculations.
The resonance content might guide the selection of states to include when extending similar operators to higher photon energies.

Load-bearing premise

The chosen set of resonances together with the fitted couplings fully captures the dominant contributions without significant missing physics or overfitting that would invalidate the operator when applied to nuclei.

What would settle it

A high-precision measurement of differential cross sections or polarization observables for kaon photoproduction on a light nucleus that lies outside the range of the nucleon data and deviates markedly from the operator's predictions would falsify the claim of reliable nuclear applicability.

read the original abstract

A new elementary operator for kaon photoproduction on the nucleon and nuclei has been developed within a Feynman diagrammatic framework. By fitting the unknown coupling strengths at the electromagnetic and hadronic vertices of the baryon resonances to all available experimental data across the six isospin channels, the model achieves excellent agreement with the data. The operator includes 26 nucleon resonances in the $K\Lambda$ channels and 17 additional $\Delta$ resonances in the $K\Sigma$ channels. For applications to nuclear reactions, such as hypernuclear photoproduction, the operator is formulated in Pauli space, allowing a straightforward implementation of the nonrelativistic approximation. Several alternative forms for expressing the operator output are proposed. In one of them, the spin operators and photon polarization vectors are separated from the operator, since both are frame dependent, thereby enhancing its versatility in nuclear applications.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Desk Editor's Note private letter to a colleague

This paper gives a practical Pauli-space operator for kaon photoproduction built from 43 fitted resonances, but the large parameter count and data-driven fit raise real questions about reliability for nuclear use.

read the letter

The main takeaway is that the authors have assembled a Feynman-diagrammatic operator with 26 nucleon resonances for the K Lambda channels and 17 Delta resonances for K Sigma, fitted all the electromagnetic and hadronic couplings to the full set of available data in the six isospin channels, and then recast the result in Pauli space so it can be dropped straight into nonrelativistic nuclear calculations. They also separate the spin operators and photon polarization vectors from the rest of the expression, which should make frame changes easier when moving to nuclei or hypernuclei. That separation and the explicit Pauli form are the concrete advances here; they address a practical bottleneck for people who actually run nuclear codes rather than just nucleon-level amplitudes. The paper does a straightforward job of describing the resonance content and claiming good data agreement after the fit, which at least gives users a ready-made tool instead of having to build one from scratch. On the soft side, the fit is performed on the same data the operator is later used to describe, and with dozens of resonances each carrying multiple couplings the parameter count is high. The abstract gives no numbers on chi-squared, error propagation, or any check against held-out points, so it is hard to judge whether the agreement reflects captured physics or just flexibility in the fit. That circularity and lack of validation details are the main weaknesses, and they matter more because the operator is intended for nuclear applications where missing contributions or tuned artifacts could propagate. This work is for the small group of theorists doing hypernuclear photoproduction or kaon-nucleus reactions who need an off-the-shelf elementary operator. A reader already working in that corner could extract the Pauli form and test it themselves, but outsiders will not find broad new physics. It is coherent enough and addresses a real implementation need that it should go to a serious referee rather than a desk reject; the review would mainly need to probe the resonance selection, fit stability, and any cross-checks that are in the full text but not visible in the abstract.

Referee Report

2 major / 1 minor

Summary. The manuscript develops a new elementary operator for kaon photoproduction on the nucleon and nuclei in a Feynman diagrammatic framework. It incorporates 26 nucleon resonances for the KΛ channels and 17 additional Δ resonances for the KΣ channels. Unknown coupling strengths at the electromagnetic and hadronic vertices are fitted to experimental data across all six isospin channels, with the claim of excellent agreement. The operator is cast in Pauli space to enable direct use in nonrelativistic nuclear calculations such as hypernuclear photoproduction, and alternative operator forms that separate spin operators and photon polarization vectors are proposed.

Significance. If the central result holds, the Pauli-space formulation would be a useful practical advance for nuclear applications, allowing straightforward implementation of the operator in hypernuclear photoproduction studies. The explicit separation of frame-dependent quantities is a clear strength that increases versatility. The comprehensive resonance set aims to capture dominant contributions across channels.

major comments (2)

[Abstract] Abstract: the statement that fitting the couplings yields 'excellent agreement with the data' is unsupported by any quantitative fit metrics (χ², degrees of freedom, error propagation, or held-out validation). Without these, the agreement cannot be distinguished from the flexibility afforded by the large number of free parameters.
[Resonance model and fitting section] Resonance inclusion and fitting procedure: with 26 N* plus 17 Δ resonances each contributing multiple electromagnetic and hadronic couplings, the parameter count is high; the manuscript provides no regularization, cross-validation, or explicit demonstration that omitted diagrams are negligible, leaving open the possibility that the fit absorbs data features rather than isolating the underlying physics needed for reliable nuclear extrapolation.

minor comments (1)

[Abstract] The abstract refers to 'several alternative forms' for the operator output but does not enumerate or compare them in the provided summary.

Simulated Author's Rebuttal

2 responses · 0 unresolved

We thank the referee for the careful reading of our manuscript and the constructive comments. We address each major comment below and indicate the revisions we will make.

read point-by-point responses

Referee: [Abstract] Abstract: the statement that fitting the couplings yields 'excellent agreement with the data' is unsupported by any quantitative fit metrics (χ², degrees of freedom, error propagation, or held-out validation). Without these, the agreement cannot be distinguished from the flexibility afforded by the large number of free parameters.

Authors: We agree that the abstract would be strengthened by quantitative support for the fit quality. In the revised manuscript we will add the χ² per degree of freedom for the global fit to all six isospin channels together with the total number of data points and fitted parameters. A brief discussion of fit uncertainties will also be included. revision: yes
Referee: [Resonance model and fitting section] Resonance inclusion and fitting procedure: with 26 N* plus 17 Δ resonances each contributing multiple electromagnetic and hadronic couplings, the parameter count is high; the manuscript provides no regularization, cross-validation, or explicit demonstration that omitted diagrams are negligible, leaving open the possibility that the fit absorbs data features rather than isolating the underlying physics needed for reliable nuclear extrapolation.

Authors: Resonance selection follows the established N* and Δ states listed by the Particle Data Group that couple to the KΛ and KΣ channels. The fit is performed simultaneously across all six isospin channels, which provides additional constraints. We will revise the manuscript to include an explicit table of all fitted couplings with uncertainties and a clearer statement of the total parameter count. We acknowledge that regularization or cross-validation was not applied in the present phenomenological construction; this limitation will be noted in the revised text. The multi-channel data set and the requirement that the same operator be used for nuclear applications already limit the freedom to absorb arbitrary features. revision: partial

Circularity Check

1 steps flagged

Fitting of resonance couplings to photoproduction data reduces the reported agreement to a fitted-input-called-prediction by construction

specific steps

fitted input called prediction [Abstract]
"By fitting the unknown coupling strengths at the electromagnetic and hadronic vertices of the baryon resonances to all available experimental data across the six isospin channels, the model achieves excellent agreement with the data. The operator includes 26 nucleon resonances in the KΛ channels and 17 additional Δ resonances in the KΣ channels."

The 'excellent agreement' is obtained by adjusting the unknown couplings directly to the same experimental data set; the reported success is therefore a direct consequence of the fitting procedure rather than an independent validation of the chosen resonance set or operator form.

full rationale

The paper explicitly constructs its elementary operator by fitting unknown EM and hadronic couplings of 26 N* + 17 Δ resonances to the full set of experimental data in all six isospin channels, then states that this yields excellent agreement. This agreement is therefore enforced by the fit rather than emerging as an independent test of the resonance content or the Feynman-diagrammatic framework. The resulting Pauli-space operator for nuclear use inherits the same fitted parameters. No self-citation load-bearing, uniqueness theorem, or ansatz smuggling is evident from the provided text; the circularity is confined to the central claim of data agreement.

Axiom & Free-Parameter Ledger

1 free parameters · 1 axioms · 0 invented entities

The central claim rests on a large number of fitted coupling constants whose values are determined by the data rather than derived from first principles; the Feynman-diagrammatic framework and resonance list are taken as given.

free parameters (1)

electromagnetic and hadronic coupling strengths
Unknown constants at all resonance vertices are adjusted to reproduce the six isospin channels of experimental data.

axioms (1)

domain assumption Feynman diagrammatic framework with s-, t-, and u-channel resonance exchanges is adequate to describe kaon photoproduction near threshold and in the resonance region.
Used to construct the elementary operator before any fitting occurs.

pith-pipeline@v0.9.0 · 5677 in / 1311 out tokens · 27906 ms · 2026-05-18T06:28:40.794439+00:00 · methodology

discussion (0)

Lean theorems connected to this paper

Citations machine-checked in the Pith Canon. Every link opens the source theorem in the public Lean library.

IndisputableMonolith/Cost/FunctionalEquation.lean washburn_uniqueness_aczel contradicts

?

contradicts
CONTRADICTS: the theorem conflicts with this paper passage, or marks a claim that would need revision before publication.

By fitting the unknown coupling strengths at the electromagnetic and hadronic vertices of the baryon resonances to all available experimental data across the six isospin channels, the model achieves excellent agreement with the data. The operator includes 26 nucleon resonances in the KΛ channels and 17 additional Δ resonances in the KΣ channels.
IndisputableMonolith/Foundation/RealityFromDistinction.lean reality_from_one_distinction unclear

?

unclear
Relation between the paper passage and the cited Recognition theorem.

For applications to nuclear reactions, such as hypernuclear photoproduction, the operator is formulated in Pauli space, allowing a straightforward implementation of the nonrelativistic approximation.

What do these tags mean?

matches: The paper's claim is directly supported by a theorem in the formal canon.
supports: The theorem supports part of the paper's argument, but the paper may add assumptions or extra steps.
extends: The paper goes beyond the formal theorem; the theorem is a base layer rather than the whole result.
uses: The paper appears to rely on the theorem as machinery.
contradicts: The paper's claim conflicts with a theorem or certificate in the canon.
unclear: Pith found a possible connection, but the passage is too broad, indirect, or ambiguous to say the theorem truly supports the claim.

Reference graph

Works this paper leans on

44 extracted references · 44 canonical work pages

[1]

Kawaguchi, M., Moravcsik, M.J.: Photoproduction of K mesons from single nu- cleons. Phys. Rev. 107, 563 (1957). DOI 10.1103/PhysRev.107.563

work page doi:10.1103/physrev.107.563 1957
[2]

Thom, H.: Phenomenological analysis of K+ Λ photoproduction. Phys. Rev. 151, 1322–1336 (1966). DOI 10.1103/PhysRev.151.1322

work page doi:10.1103/physrev.151.1322 1966
[3]

Adelseck, R.A., Bennhold, C., Wright, L.E.: Kaon photopr oduction operator for use in nuclear physics. Phys. Rev. C 32, 1681–1692 (1985). DOI 10.1103/ PhysRevC.32.1681

work page 1985
[4]

Adelseck, R.A., Saghai, B.: Kaon photoproduction: Data c onsistency, coupling constants, and polarization observables. Phys. Rev. C 42, 108–127 (1990). DOI 10.1103/PhysRevC.42.108 16 Terry Mart , Jovan Alﬁan Djaja

work page doi:10.1103/physrevc.42.108 1990
[5]

Mart, T., Bennhold, C., Hyde-Wright, C.E.: Constraints o n coupling constants through charged Σ photoproduction. Phys. Rev. C 51, R1074–R1077 (1995). DOI 10.1103/PhysRevC.51.R1074

work page doi:10.1103/physrevc.51.r1074 1995
[6]

David, J.C., Fayard, C., Lamot, G.H., Saghai, B.: Electro magnetic production of associated strangeness. Phys. Rev. C 53, 2613–2637 (1996). DOI 10.1103/ PhysRevC.53.2613

work page 1996
[7]

Mart, T., Bennhold, C.: Evidence for a missing nucleon res onance in kaon pho- toproduction. Phys. Rev. C 61, 012,201 (2000). DOI 10.1103/PhysRevC.61. 012201

work page doi:10.1103/physrevc.61 2000
[8]

Maxwell, O.V .: Model dependence in the photoproduction of kaons from protons and deuterons. Phys. Rev. C 70, 044,612 (2004). DOI 10.1103/PhysRevC.70. 044612

work page doi:10.1103/physrevc.70 2004
[9]

Mart, T.: Coupled K+Λ and K0Λ photoproduction off the nucleon: Conse- quences from the recent CLAS and MAMI data and the N(1680)P11 narrow state. Phys. Rev. D 100(5), 056,008 (2019). DOI 10.1103/PhysRevD.100.056008

work page doi:10.1103/physrevd.100.056008 2019
[10]

Tran, M.Q., et al.: Measurement of γ p → K+Λ and γ p → K0Σ + at photon energies up to 2 GeV. Phys. Lett. B 445, 20–26 (1998). DOI 10.1016/ S0370-2693(98)01393-8

work page 1998
[11]

Goers, S., et al.: Measurement of γ p → K0Σ + at photon energies up to 1.55 GeV. Phys. Lett. B 464, 331–338 (1999). DOI 10.1016/S0370-2693(99)01031-X

work page doi:10.1016/s0370-2693(99)01031-x 1999
[12]

Bradford, R., et al.: Differential cross sections for γ + p → K+ +Y for Λ and Σ 0 hyperons. Phys. Rev. C 73, 035,202 (2006). DOI 10.1103/PhysRevC.73.035202

work page doi:10.1103/physrevc.73.035202 2006
[13]

Bradford, R.K., et al.: First measurement of beam-recoi l observables Cx and Cz in hyperon photoproduction. Phys. Rev. C 75, 035,205 (2007). DOI 10.1103/ PhysRevC.75.035205

work page 2007
[14]

Castelijns, R., et al.: Nucleon resonance decay by the K0Σ + channel. Eur. Phys. J. A 35, 39–45 (2008). DOI 10.1140/epja/i2007-10529-8

work page doi:10.1140/epja/i2007-10529-8 2008
[15]

Lleres, A., et al.: Measurement of beam-recoil observab les Ox, Oz and target asymmetry for the reaction γ p → K+Λ . Eur. Phys. J. A 39, 149–161 (2009). DOI 10.1140/epja/i2008-10713-4

work page doi:10.1140/epja/i2008-10713-4 2009
[16]

McCracken, M.E., et al.: Differential cross section and recoil polarization mea- surements for the γ p → K+Λ reaction using CLAS at Jefferson Lab. Phys. Rev. C 81, 025,201 (2010). DOI 10.1103/PhysRevC.81.025201

work page doi:10.1103/physrevc.81.025201 2010
[17]

Pereira, S.A., et al.: Differential cross section of γ n → K+Σ − on bound neutrons with incident photons from 1.1 to 3.6 GeV. Phys. Lett. B 688, 289–293 (2010). DOI 10.1016/j.physletb.2010.04.028

work page doi:10.1016/j.physletb.2010.04.028 2010
[18]

Dey, B., et al.: Differential cross sections and recoil p olarizations for the reaction γ p → K+Σ 0. Phys. Rev. C 82, 025,202 (2010). DOI 10.1103/PhysRevC.82. 025202

work page doi:10.1103/physrevc.82 2010
[19]

Jude, T.C., et al.: K+Λ and K+Σ 0 photoproduction with ﬁne center-of-mass en- ergy resolution. Phys. Lett. B 735, 112–118 (2014). DOI 10.1016/j.physletb. 2014.06.015

work page doi:10.1016/j.physletb 2014
[20]

Paterson, C.A., et al.: Photoproduction of Λ and Σ 0 hyperons using linearly po- larized photons. Phys. Rev. C 93(6), 065,201 (2016). DOI 10.1103/PhysRevC. 93.065201 New Elementary Operator for Kaon Photoproduction on the Nuc leon and Nuclei 17

work page doi:10.1103/physrevc 2016
[21]

Compton, N., et al.: Measurement of the differential and total cross sections of the γ d→ K0Λ (p) reaction within the resonance region. Phys. Rev. C 96(6), 065,201 (2017). DOI 10.1103/PhysRevC.96.065201

work page doi:10.1103/physrevc.96.065201 2017
[22]

Mart, T.: Electromagnetic production of kaon near thres hold. Phys. Rev. C 82, 025,209 (2010). DOI 10.1103/PhysRevC.82.025209

work page doi:10.1103/physrevc.82.025209 2010
[23]

Haberzettl, H., Bennhold, C., Mart, T., Feuster, T.: Gau ge-invariant tree-level photoproduction amplitudes with form factors. Phys. Rev. C 58(1), R40–R44 (1998). DOI 10.1103/PhysRevC.58.R40

work page doi:10.1103/physrevc.58.r40 1998
[24]

Pascalutsa, V .: Correspondence of consistent and incon sistent spin - 3/2 cou- plings via the equivalence theorem. Phys. Lett. B 503, 85–90 (2001). DOI 10.1016/S0370-2693(01)00140-X

work page doi:10.1016/s0370-2693(01)00140-x 2001
[25]

Vrancx, T., De Cruz, L., Ryckebusch, J., V ancraeyveld, P .: Consistent interac- tions for high-spin fermion ﬁelds. Phys. Rev. C 84, 045,201 (2011). DOI 10.1103/PhysRevC.84.045201

work page doi:10.1103/physrevc.84.045201 2011
[26]

Luthﬁyah, N.H., Mart, T.: Role of the high-spin nucleon a nd delta resonances in the KΛ and KΣ photoproduction off the nucleon. Phys. Rev. D 104, 076,022 (2021). DOI 10.1103/PhysRevD.104.076022

work page doi:10.1103/physrevd.104.076022 2021
[27]

Mart, T., Clymton, S., Ariﬁ, A.J.: Nucleon resonances wi th spin 3/2 and 5/2 in the isobar model for kaon photoproduction. Phys. Rev. D 92(9), 094,019 (2015). DOI 10.1103/PhysRevD.92.094019

work page doi:10.1103/physrevd.92.094019 2015
[28]

Mart, T., V an Der V entel, B.: Photo- and electroproducti on of the hypertriton on He-3. Phys. Rev. C 78, 014,004 (2008). DOI 10.1103/PhysRevC.78.014004

work page doi:10.1103/physrevc.78.014004 2008
[29]

Knochlein, G., Drechsel, D., Tiator, L.: Photoproducti on and electroproduction of eta mesons. Z. Phys. A 352, 327–343 (1995). DOI 10.1007/BF01289506

work page doi:10.1007/bf01289506 1995
[30]

Dennery, P .: Theory of the electro- and photoproduction of π mesons. Phys. Rev. 124, 2000–2010 (1961). DOI 10.1103/PhysRev.124.2000

work page doi:10.1103/physrev.124.2000 2000
[31]

Chew, G.F., Goldberger, M.L., Low, F.E., Nambu, Y .: Rela tivistic dispersion re- lation Approach to photomeson production. Phys. Rev. 106, 1345–1355 (1957). DOI 10.1103/PhysRev.106.1345

work page doi:10.1103/physrev.106.1345 1957
[32]

Clymton, S., Mart, T.: Extracting the pole and Breit-Wig ner properties of nucleon and ∆ resonances from the γ N → KΣ photoproduction. Phys. Rev. D 104(5), 056,015 (2021). DOI 10.1103/PhysRevD.104.056015

work page doi:10.1103/physrevd.104.056015 2021
[33]

In: 2nd ICTP Interna - tional Conference on Perspectives in Hadronic Physics, pp

Bennhold, C., Haberzettl, H., Mart, T.: A new resonance i n K+Λ electroproduc- tion: The D13(1895) and its electromagnetic form-factors. In: 2nd ICTP Interna - tional Conference on Perspectives in Hadronic Physics, pp. 328–337 (1999)

work page 1999
[34]

Sumihama, M., et al.: The polarized γ p → K+Λ and polarized γ p → K+Σ 0 re- actions at forward angles with photon energies from 1.5-GeV to 2.4-GeV. Phys. Rev. C 73, 035,214 (2006). DOI 10.1103/PhysRevC.73.035214

work page doi:10.1103/physrevc.73.035214 2006
[35]

Akondi, C.S., et al.: Experimental study of the γ p → K0Σ +, γ n → K0Λ , and γ n → K0Σ 0 reactions at the Mainz Microtron. Eur. Phys. J. A 55(11), 202 (2019). DOI 10.1140/epja/i2019-12924-x

work page doi:10.1140/epja/i2019-12924-x 2019
[36]

Mart, T.: Role of P13(1720) in KΣ photoproduction. Phys. Rev. C 62, 038,201 (2000). DOI 10.1103/PhysRevC.62.038201

work page doi:10.1103/physrevc.62.038201 2000
[37]

Lawall, R., et al.: Measurement of the reaction γ p → K0Σ + at photon ener- gies up to 2.6-GeV. Eur. Phys. J. A 24, 275–286 (2005). DOI 10.1140/epja/ i2005-10002-x 18 Terry Mart , Jovan Alﬁan Djaja

work page doi:10.1140/epja/ 2005
[38]

Aguar-Bartolome, P ., et al.: Measurement of the γ p → K0Σ + reaction with the Crystal Ball/TAPS detectors at the Mainz Microtron. Phys. Rev. C 88(4), 044,601 (2013). DOI 10.1103/PhysRevC.88.044601

work page doi:10.1103/physrevc.88.044601 2013
[39]

Kohri, H., et al.: Differential cross section and photon beam asymmetry for the polarized γ n → K+Σ − reaction at Eγ = 1.5 GeV - 2.4 GeV. Phys. Rev. Lett. 97, 082,003 (2006). DOI 10.1103/PhysRevLett.97.082003

work page doi:10.1103/physrevlett.97.082003 2006
[40]

Salam, A., Arenhovel, H.: Interaction effects in K+ photoproduction on the deuteron. Phys. Rev. C 70, 044,008 (2004). DOI 10.1103/PhysRevC.70.044008

work page doi:10.1103/physrevc.70.044008 2004
[41]

Mart, T., Tiator, L., Drechsel, D., Bennhold, C.: Electr omagnetic production of the hypertriton. Nucl. Phys. A 640, 235–258 (1998). DOI 10.1016/ S0375-9474(98)00441-2

work page 1998
[42]

Y amamura, H., Miyagawa, K., Mart, T., Bennhold, C., Gloe ckle, W .: Inclusive K+ and exclusive K+Y photoproduction on the deuteron: Λ and Σ threshold phe- nomena. Phys. Rev. C 61, 014,001 (2000). DOI 10.1103/PhysRevC.61.014001

work page doi:10.1103/physrevc.61.014001 2000
[43]

Miyagawa, K., Mart, T., Bennhold, C., Glockle, W .: Polar ization observables in exclusive kaon photoproduction on the deuteron. Phys. Re v. C 74, 034,002 (2006). DOI 10.1103/PhysRevC.74.034002

work page doi:10.1103/physrevc.74.034002 2006
[44]

Salam, A., Miyagawa, K., Mart, T., Bennhold, C., Glockle , W .:K0 photoproduc- tion on the deuteron and the extraction of the elementary amp litude. Phys. Rev. C 74, 044,004 (2006). DOI 10.1103/PhysRevC.74.044004

work page doi:10.1103/physrevc.74.044004 2006

[1] [1]

Kawaguchi, M., Moravcsik, M.J.: Photoproduction of K mesons from single nu- cleons. Phys. Rev. 107, 563 (1957). DOI 10.1103/PhysRev.107.563

work page doi:10.1103/physrev.107.563 1957

[2] [2]

Thom, H.: Phenomenological analysis of K+ Λ photoproduction. Phys. Rev. 151, 1322–1336 (1966). DOI 10.1103/PhysRev.151.1322

work page doi:10.1103/physrev.151.1322 1966

[3] [3]

Adelseck, R.A., Bennhold, C., Wright, L.E.: Kaon photopr oduction operator for use in nuclear physics. Phys. Rev. C 32, 1681–1692 (1985). DOI 10.1103/ PhysRevC.32.1681

work page 1985

[4] [4]

Adelseck, R.A., Saghai, B.: Kaon photoproduction: Data c onsistency, coupling constants, and polarization observables. Phys. Rev. C 42, 108–127 (1990). DOI 10.1103/PhysRevC.42.108 16 Terry Mart , Jovan Alﬁan Djaja

work page doi:10.1103/physrevc.42.108 1990

[5] [5]

Mart, T., Bennhold, C., Hyde-Wright, C.E.: Constraints o n coupling constants through charged Σ photoproduction. Phys. Rev. C 51, R1074–R1077 (1995). DOI 10.1103/PhysRevC.51.R1074

work page doi:10.1103/physrevc.51.r1074 1995

[6] [6]

David, J.C., Fayard, C., Lamot, G.H., Saghai, B.: Electro magnetic production of associated strangeness. Phys. Rev. C 53, 2613–2637 (1996). DOI 10.1103/ PhysRevC.53.2613

work page 1996

[7] [7]

Mart, T., Bennhold, C.: Evidence for a missing nucleon res onance in kaon pho- toproduction. Phys. Rev. C 61, 012,201 (2000). DOI 10.1103/PhysRevC.61. 012201

work page doi:10.1103/physrevc.61 2000

[8] [8]

Maxwell, O.V .: Model dependence in the photoproduction of kaons from protons and deuterons. Phys. Rev. C 70, 044,612 (2004). DOI 10.1103/PhysRevC.70. 044612

work page doi:10.1103/physrevc.70 2004

[9] [9]

Mart, T.: Coupled K+Λ and K0Λ photoproduction off the nucleon: Conse- quences from the recent CLAS and MAMI data and the N(1680)P11 narrow state. Phys. Rev. D 100(5), 056,008 (2019). DOI 10.1103/PhysRevD.100.056008

work page doi:10.1103/physrevd.100.056008 2019

[10] [10]

Tran, M.Q., et al.: Measurement of γ p → K+Λ and γ p → K0Σ + at photon energies up to 2 GeV. Phys. Lett. B 445, 20–26 (1998). DOI 10.1016/ S0370-2693(98)01393-8

work page 1998

[11] [11]

Goers, S., et al.: Measurement of γ p → K0Σ + at photon energies up to 1.55 GeV. Phys. Lett. B 464, 331–338 (1999). DOI 10.1016/S0370-2693(99)01031-X

work page doi:10.1016/s0370-2693(99)01031-x 1999

[12] [12]

Bradford, R., et al.: Differential cross sections for γ + p → K+ +Y for Λ and Σ 0 hyperons. Phys. Rev. C 73, 035,202 (2006). DOI 10.1103/PhysRevC.73.035202

work page doi:10.1103/physrevc.73.035202 2006

[13] [13]

Bradford, R.K., et al.: First measurement of beam-recoi l observables Cx and Cz in hyperon photoproduction. Phys. Rev. C 75, 035,205 (2007). DOI 10.1103/ PhysRevC.75.035205

work page 2007

[14] [14]

Castelijns, R., et al.: Nucleon resonance decay by the K0Σ + channel. Eur. Phys. J. A 35, 39–45 (2008). DOI 10.1140/epja/i2007-10529-8

work page doi:10.1140/epja/i2007-10529-8 2008

[15] [15]

Lleres, A., et al.: Measurement of beam-recoil observab les Ox, Oz and target asymmetry for the reaction γ p → K+Λ . Eur. Phys. J. A 39, 149–161 (2009). DOI 10.1140/epja/i2008-10713-4

work page doi:10.1140/epja/i2008-10713-4 2009

[16] [16]

McCracken, M.E., et al.: Differential cross section and recoil polarization mea- surements for the γ p → K+Λ reaction using CLAS at Jefferson Lab. Phys. Rev. C 81, 025,201 (2010). DOI 10.1103/PhysRevC.81.025201

work page doi:10.1103/physrevc.81.025201 2010

[17] [17]

Pereira, S.A., et al.: Differential cross section of γ n → K+Σ − on bound neutrons with incident photons from 1.1 to 3.6 GeV. Phys. Lett. B 688, 289–293 (2010). DOI 10.1016/j.physletb.2010.04.028

work page doi:10.1016/j.physletb.2010.04.028 2010

[18] [18]

Dey, B., et al.: Differential cross sections and recoil p olarizations for the reaction γ p → K+Σ 0. Phys. Rev. C 82, 025,202 (2010). DOI 10.1103/PhysRevC.82. 025202

work page doi:10.1103/physrevc.82 2010

[19] [19]

Jude, T.C., et al.: K+Λ and K+Σ 0 photoproduction with ﬁne center-of-mass en- ergy resolution. Phys. Lett. B 735, 112–118 (2014). DOI 10.1016/j.physletb. 2014.06.015

work page doi:10.1016/j.physletb 2014

[20] [20]

Paterson, C.A., et al.: Photoproduction of Λ and Σ 0 hyperons using linearly po- larized photons. Phys. Rev. C 93(6), 065,201 (2016). DOI 10.1103/PhysRevC. 93.065201 New Elementary Operator for Kaon Photoproduction on the Nuc leon and Nuclei 17

work page doi:10.1103/physrevc 2016

[21] [21]

Compton, N., et al.: Measurement of the differential and total cross sections of the γ d→ K0Λ (p) reaction within the resonance region. Phys. Rev. C 96(6), 065,201 (2017). DOI 10.1103/PhysRevC.96.065201

work page doi:10.1103/physrevc.96.065201 2017

[22] [22]

Mart, T.: Electromagnetic production of kaon near thres hold. Phys. Rev. C 82, 025,209 (2010). DOI 10.1103/PhysRevC.82.025209

work page doi:10.1103/physrevc.82.025209 2010

[23] [23]

Haberzettl, H., Bennhold, C., Mart, T., Feuster, T.: Gau ge-invariant tree-level photoproduction amplitudes with form factors. Phys. Rev. C 58(1), R40–R44 (1998). DOI 10.1103/PhysRevC.58.R40

work page doi:10.1103/physrevc.58.r40 1998

[24] [24]

Pascalutsa, V .: Correspondence of consistent and incon sistent spin - 3/2 cou- plings via the equivalence theorem. Phys. Lett. B 503, 85–90 (2001). DOI 10.1016/S0370-2693(01)00140-X

work page doi:10.1016/s0370-2693(01)00140-x 2001

[25] [25]

Vrancx, T., De Cruz, L., Ryckebusch, J., V ancraeyveld, P .: Consistent interac- tions for high-spin fermion ﬁelds. Phys. Rev. C 84, 045,201 (2011). DOI 10.1103/PhysRevC.84.045201

work page doi:10.1103/physrevc.84.045201 2011

[26] [26]

Luthﬁyah, N.H., Mart, T.: Role of the high-spin nucleon a nd delta resonances in the KΛ and KΣ photoproduction off the nucleon. Phys. Rev. D 104, 076,022 (2021). DOI 10.1103/PhysRevD.104.076022

work page doi:10.1103/physrevd.104.076022 2021

[27] [27]

Mart, T., Clymton, S., Ariﬁ, A.J.: Nucleon resonances wi th spin 3/2 and 5/2 in the isobar model for kaon photoproduction. Phys. Rev. D 92(9), 094,019 (2015). DOI 10.1103/PhysRevD.92.094019

work page doi:10.1103/physrevd.92.094019 2015

[28] [28]

Mart, T., V an Der V entel, B.: Photo- and electroproducti on of the hypertriton on He-3. Phys. Rev. C 78, 014,004 (2008). DOI 10.1103/PhysRevC.78.014004

work page doi:10.1103/physrevc.78.014004 2008

[29] [29]

Knochlein, G., Drechsel, D., Tiator, L.: Photoproducti on and electroproduction of eta mesons. Z. Phys. A 352, 327–343 (1995). DOI 10.1007/BF01289506

work page doi:10.1007/bf01289506 1995

[30] [30]

Dennery, P .: Theory of the electro- and photoproduction of π mesons. Phys. Rev. 124, 2000–2010 (1961). DOI 10.1103/PhysRev.124.2000

work page doi:10.1103/physrev.124.2000 2000

[31] [31]

Chew, G.F., Goldberger, M.L., Low, F.E., Nambu, Y .: Rela tivistic dispersion re- lation Approach to photomeson production. Phys. Rev. 106, 1345–1355 (1957). DOI 10.1103/PhysRev.106.1345

work page doi:10.1103/physrev.106.1345 1957

[32] [32]

Clymton, S., Mart, T.: Extracting the pole and Breit-Wig ner properties of nucleon and ∆ resonances from the γ N → KΣ photoproduction. Phys. Rev. D 104(5), 056,015 (2021). DOI 10.1103/PhysRevD.104.056015

work page doi:10.1103/physrevd.104.056015 2021

[33] [33]

In: 2nd ICTP Interna - tional Conference on Perspectives in Hadronic Physics, pp

Bennhold, C., Haberzettl, H., Mart, T.: A new resonance i n K+Λ electroproduc- tion: The D13(1895) and its electromagnetic form-factors. In: 2nd ICTP Interna - tional Conference on Perspectives in Hadronic Physics, pp. 328–337 (1999)

work page 1999

[34] [34]

Sumihama, M., et al.: The polarized γ p → K+Λ and polarized γ p → K+Σ 0 re- actions at forward angles with photon energies from 1.5-GeV to 2.4-GeV. Phys. Rev. C 73, 035,214 (2006). DOI 10.1103/PhysRevC.73.035214

work page doi:10.1103/physrevc.73.035214 2006

[35] [35]

Akondi, C.S., et al.: Experimental study of the γ p → K0Σ +, γ n → K0Λ , and γ n → K0Σ 0 reactions at the Mainz Microtron. Eur. Phys. J. A 55(11), 202 (2019). DOI 10.1140/epja/i2019-12924-x

work page doi:10.1140/epja/i2019-12924-x 2019

[36] [36]

Mart, T.: Role of P13(1720) in KΣ photoproduction. Phys. Rev. C 62, 038,201 (2000). DOI 10.1103/PhysRevC.62.038201

work page doi:10.1103/physrevc.62.038201 2000

[37] [37]

Lawall, R., et al.: Measurement of the reaction γ p → K0Σ + at photon ener- gies up to 2.6-GeV. Eur. Phys. J. A 24, 275–286 (2005). DOI 10.1140/epja/ i2005-10002-x 18 Terry Mart , Jovan Alﬁan Djaja

work page doi:10.1140/epja/ 2005

[38] [38]

Aguar-Bartolome, P ., et al.: Measurement of the γ p → K0Σ + reaction with the Crystal Ball/TAPS detectors at the Mainz Microtron. Phys. Rev. C 88(4), 044,601 (2013). DOI 10.1103/PhysRevC.88.044601

work page doi:10.1103/physrevc.88.044601 2013

[39] [39]

Kohri, H., et al.: Differential cross section and photon beam asymmetry for the polarized γ n → K+Σ − reaction at Eγ = 1.5 GeV - 2.4 GeV. Phys. Rev. Lett. 97, 082,003 (2006). DOI 10.1103/PhysRevLett.97.082003

work page doi:10.1103/physrevlett.97.082003 2006

[40] [40]

Salam, A., Arenhovel, H.: Interaction effects in K+ photoproduction on the deuteron. Phys. Rev. C 70, 044,008 (2004). DOI 10.1103/PhysRevC.70.044008

work page doi:10.1103/physrevc.70.044008 2004

[41] [41]

Mart, T., Tiator, L., Drechsel, D., Bennhold, C.: Electr omagnetic production of the hypertriton. Nucl. Phys. A 640, 235–258 (1998). DOI 10.1016/ S0375-9474(98)00441-2

work page 1998

[42] [42]

Y amamura, H., Miyagawa, K., Mart, T., Bennhold, C., Gloe ckle, W .: Inclusive K+ and exclusive K+Y photoproduction on the deuteron: Λ and Σ threshold phe- nomena. Phys. Rev. C 61, 014,001 (2000). DOI 10.1103/PhysRevC.61.014001

work page doi:10.1103/physrevc.61.014001 2000

[43] [43]

Miyagawa, K., Mart, T., Bennhold, C., Glockle, W .: Polar ization observables in exclusive kaon photoproduction on the deuteron. Phys. Re v. C 74, 034,002 (2006). DOI 10.1103/PhysRevC.74.034002

work page doi:10.1103/physrevc.74.034002 2006

[44] [44]

Salam, A., Miyagawa, K., Mart, T., Bennhold, C., Glockle , W .:K0 photoproduc- tion on the deuteron and the extraction of the elementary amp litude. Phys. Rev. C 74, 044,004 (2006). DOI 10.1103/PhysRevC.74.044004

work page doi:10.1103/physrevc.74.044004 2006