New Physics Contribution to $B_s \to \mu^+ \mu^-$ within R-Parity Violating Supersymmetric Models

Gagik Yeghiyan

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New Physics Contribution to $B_s \to \mu^+ \mu^-$ within R-Parity Violating Supersymmetric Models

Gagik Yeghiyan

High Energy Physics - Phenomenology · Submitted 3 May 2013

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim We argue that despite the LHCb measurement of the $B(B_s \to \mu^+ \mu^-)$ is in a remarkable agreement with the Standard Model (SM) prediction, there is still room for a significant New Physics contribution to the $B(B_s \to \mu^+ \mu^-)$, as the sign of the $B_s \to \mu^+ \mu^-$ transition amplitude may be opposite to that of the Standard Model; alternatively the amplitude may have a large phase.

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arXiv ID1305.0852 (version 3)

Pith ID7B2S7C7H, Pith's permanent record of this paper and its review

CitationGagik Yeghiyan. "New Physics Contribution to $B_s \to \mu^+ \mu^-$ within R-Parity Violating Supersymmetric Models." arXiv:1305.0852 (2013). https://pith.science/paper/7B2S7C7H

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The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

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Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 5,880 input tokens, $0.0002 reported.

What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.70 · human participants 0.01 · controlled comparison 0.34 · randomized assignment 0.01 · states quantitative result 0.09 · compares with prior results 0.86 · mentions code or data availability 0.01.

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arXiv listing abstract v3. Results and the main claim are underlined; show every role.

We re-visit the problem of New Physics (NP) contribution to the branching ratio of the $B_s \to \mu^+ \mu^-$ decay in light of the recent observation of this decay by LHCb. We consider R-parity violating (RPV) supersymmetric models as a primary example - recently one has reported stringent constraints on the products of the RPV coupling constants that account for the $B_s \to \mu^+ \mu^-$ transition at the tree level. We argue that despite the LHCb measurement of the $B(B_s \to \mu^+ \mu^-)$ is in a remarkable agreement with the Standard Model (SM) prediction, there is still room for a significant New Physics contribution to the $B(B_s \to \mu^+ \mu^-)$, as the sign of the $B_s \to \mu^+ \mu^-$ transition amplitude may be opposite to that of the Standard Model; alternatively the amplitude may have a large phase. We conduct our analysis mainly for the case of real RPV couplings. We find that taking into account the scenario with the sign flip of the $B_s \to \mu^+ \mu^-$ amplitude (as compared to that of the SM) makes the bounds on the RPV coupling products significantly weaker. Also, we discuss briefly how our results are modified if the RPV couplings have large phases. In particular, we examine the dependence of the derived bounds on the phase of the NP amplitude.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	We re-visit the problem of New Physics (NP) contribution to the branching ratio of the $B_s \to \mu^+ \mu^-$ decay in light of the recent observation of this decay by LHCb.	background 0.62	0.49	0.04	asserted 0.74
s1	We consider R-parity violating (RPV) supersymmetric models as a primary example - recently one has reported stringent constraints on the products of the RPV coupling constants that account for the $B_s \to \mu^+ \mu^-$ transition at the tree level.	background 0.83	0.12	0.04	asserted 0.98
s2	We argue that despite the LHCb measurement of the $B(B_s \to \mu^+ \mu^-)$ is in a remarkable agreement with the Standard Model (SM) prediction, there is still room for a significant New Physics contribution to the $B(B_s \to \mu^+ \mu^-)$, as the sign of the $B_s \to \mu^+ \mu^-$ transition amplitude may be opposite to that of the Standard Model; alternatively the amplitude may have a large phase.	interpretation 0.40	0.24	0.72	hedged possibility 0.78
s3	We conduct our analysis mainly for the case of real RPV couplings.	method 0.76	0.73	0.02	asserted 0.97
s4	We find that taking into account the scenario with the sign flip of the $B_s \to \mu^+ \mu^-$ amplitude (as compared to that of the SM) makes the bounds on the RPV coupling products significantly weaker.	result 1.00	0.95	0.66	asserted 1.00
s5	Also, we discuss briefly how our results are modified if the RPV couplings have large phases.	contribution 0.79	0.78	0.04	asserted 0.58
s6	In particular, we examine the dependence of the derived bounds on the phase of the NP amplitude.	contribution 0.63	0.84	0.04	unclear 0.51

What kind of paper the classifier reports this is: theoretical result 0.97 · evidence from proof or derivation 0.51.

What was examined, and what was not

sources read

arXiv listing abstract v3

not examined

full text
figures and tables
references and citing sentences
relations to other papers

levels run

P abstract

not run

S sections
T body sentences
C citations
R cross-paper relations

Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper

Original abstract

We re-visit the problem of New Physics (NP) contribution to the branching ratio of the $B_s \to \mu^+ \mu^-$ decay in light of the recent observation of this decay by LHCb. We consider R-parity violating (RPV) supersymmetric models as a primary example - recently one has reported stringent constraints on the products of the RPV coupling constants that account for the $B_s \to \mu^+ \mu^-$ transition at the tree level. We argue that despite the LHCb measurement of the $B(B_s \to \mu^+ \mu^-)$ is in a remarkable agreement with the Standard Model (SM) prediction, there is still room for a significant New Physics contribution to the $B(B_s \to \mu^+ \mu^-)$, as the sign of the $B_s \to \mu^+ \mu^-$ transition amplitude may be opposite to that of the Standard Model; alternatively the amplitude may have a large phase. We conduct our analysis mainly for the case of real RPV couplings. We find that taking into account the scenario with the sign flip of the $B_s \to \mu^+ \mu^-$ amplitude (as compared to that of the SM) makes the bounds on the RPV coupling products significantly weaker. Also, we discuss briefly how our results are modified if the RPV couplings have large phases. In particular, we examine the dependence of the derived bounds on the phase of the NP amplitude.

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References

Forward citations

Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

Shedding light on the $b\to s$ anomalies with a dark sector
hep-ph 2015-03 conditional novelty 5.0 of 10

A dark U(1) extension of the Standard Model with vector-like fermions and a scalar dark matter candidate can simultaneously explain the LHCb b→s anomalies and reproduce the observed dark matter relic density.
Scalar leptoquarks and the rare B meson decays
hep-ph 2015-01 conditional novelty 4.0 of 10

Scalar leptoquarks constrained by B_s,d → μ+μ− data shift R_K into the measured range but leave the B → K μ+μ− isospin asymmetry essentially at its Standard Model value.

How the literature uses it

4 arXiv papers cite this in 5 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 1 sentence without a confident label

Cites it as background 4 papers

This process has been very well studied in the literature and in recent times also it has attracted a lot of attention [ref] .

Effect of scalar leptoquarks on the rare decays of B_s meson · $B_s →μ^+ μ^-$ decay process · 0.93
These processes have been very well studied in the literature and in recent times also they have attracted a lot of attention [ref] .

Scalar leptoquarks and the rare B meson decays · $B_s,d →μ^+ μ^-$ decay process · 0.93
The impact of complex $R$pV couplings on tree level decays is discussed in Ref. [ref] .

$B_{s,d}^0 \to \mu\bar{\mu}$ and $B\to X_s\gamma$ in the R-parity violating MSSM · Numerical Setup · 0.92

What it cites · 23 sentences without a confident label

Uses the method or tool of 1 paper

[ref] and assume λ^'_i23 = λ^'_i32 in our further calculations.

Relating B_s Mixing and B_s -> mu+mu- with New Physics · Introduction · 0.86

Uses data or values from 11 papers

A more conservative approach would imply using the 95% C.L. interval, $B() = [1.1 ÷6.4] ×10^-9$ [ref] .

First evidence for the decay Bs -> mu+ mu- · Introduction · 0.99
We use during the numerical analysis $τ_B_s = 1.509$ ps, [ref] , $f_B_s = 0.225$ GeV [ref] , $V^⋆_tb V_ts = 0.0405$ [ref] (as mentioned above, we neglect the small phase of this CKM product), $M_W = 80.4$ GeV, $sin^2θ_W = 0.231$, $G_F = 1.166 ×10^-5 GeV^-2$, $α= α(M_Z) = 1/128$, $m_μ= 0.106$ GeV, $M_B_s = 5.3667$ GeV, $m_b = m_b(m_b) = 4.18$ GeV [ref] .

B-meson decay constants from improved lattice NRQCD and physical u, d, s and c sea quarks · Introduction · 1.00
We use during the numerical analysis $τ_B_s = 1.509$ ps, [ref] , $f_B_s = 0.225$ GeV [ref] , $V^⋆_tb V_ts = 0.0405$ [ref] (as mentioned above, we neglect the small phase of this CKM product), $M_W = 80.4$ GeV, $sin^2θ_W = 0.231$, $G_F = 1.166 ×10^-5 GeV^-2$, $α= α(M_Z) = 1/128$, $m_μ= 0.106$ GeV, $M_B_s = 5.3667$ GeV, $m_b = m_b(m_b) = 4.18$ GeV [ref] .

Averages of b-hadron, c-hadron, and tau-lepton properties as of early 2012 · Introduction · 1.00

Cites as support 5 papers

In particular, it has been argued in [ref] that the LHCb result still leaves room for a non-negligible NP contribution, due to the uncertainty in the experimental value of the $B()$.

Constraints on Unparticles from $B_s\to\mu^+\mu^-$ · Introduction · 0.98
In particular, it has been argued in [ref] that the LHCb result still leaves room for a non-negligible NP contribution, due to the uncertainty in the experimental value of the $B()$.

BR(Bs to mu+ mu-) as an electroweak precision test · Introduction · 0.98
In particular, it has been argued in [ref] that the LHCb result still leaves room for a non-negligible NP contribution, due to the uncertainty in the experimental value of the $B()$.

Supersymmetry confronts Bs -> mu+mu-: Present and future status · Introduction · 0.98

Cites as background 1 paper

This is a manifestation of the so-called flavor problem [ref] : to assure that tree level flavor changing neutral currents beyond the SM do not conflict with the experimental data, either the relevant couplings should be unnaturally small or the New Physics mass scale should be enormously large.

Probing new physics with flavor physics (and probing flavor physics with new physics) · Introduction · 0.81

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