RECORD
Spin mixing mechanism in amplitude analysis of pi(-)p->pi(-)pi(+)n and a new view of dark matter
High Energy Physics - Phenomenology · Submitted 17 Nov 2014
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We call the quantum states rho(E) dark neutrinos and propose to identify them with the particles of a distinct component of dark matter.
The compiled record
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.
Open the compiled record
The abstract, sentence by sentence
We present the first amplitude analysis of the CERN data on pi(-)p->pi(-)pi(+)n on polarized target at 17.2 GeV/c for dipion masses 580-1080 MeV at low momentum transfer using spin mixing mechanism. The analysis of the S- and P-wave subsystem determines a unique solution for the spin mixing transversity amplitudes S_tau, L_tau, the corresponding S-matrix amplitudes S^0_tau, L^0_tau and the rho^0(770)-f_0(980) spin mixing parameters. The spin mixing mechanism allows to extract D-wave observables from the CERN data. Analysis of the full D-wave subsystem for transversity tau=u reveals rho^0(770) mixing in the amplitudes |D^U_u|^2 and |D^N_u|^2 and a violation of a cosine condition by the amplitudes D^2U_u and D^2N_u. We determine spin mixing and S-matrix helicity amplitudes from which we calculate pipi phase-shifts delta^0_S and delta_P below KKbar threshold. The spin mixing and the violation of the cosine condition arise from a non-standard pure dephasing interaction of the produced final S-matrix state rho_f(S) with a quantum state rho(E) of a quantum environment to produce the observed state rho_f(O). Our analysis determines that the number of interacting degrees of freedom of the environment is M=4. We identify the four eigenstates |e_k> that define the density matrix rho(E) with the four neutrino mass eigenstates |m_k> with m_4 due to light sterile neutrino. We call the quantum states rho(E) dark neutrinos and propose to identify them with the particles of a distinct component of dark matter. Dephasing interactions are not rare events but they require high statistics experiments with polarized targets for their detection. Our amplitude analysis illustrates this new kind of search for dark matter.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We present the first amplitude analysis of the CERN data on pi(-)p->pi(-)pi(+)n on polarized target at 17.2 GeV/c for dipion masses 580-1080 MeV at low momentum transfer using spin mixing mechanism. | contribution 0.96 | 0.93 | 0.07 | asserted 1.00 |
| s1 | The analysis of the S- and P-wave subsystem determines a unique solution for the spin mixing transversity amplitudes S_tau, L_tau, the corresponding S-matrix amplitudes S^0_tau, L^0_tau and the rho^0(770)-f_0(980) spin mixing parameters. | result 0.97 | 0.95 | 0.11 | asserted 1.00 |
| s2 | The spin mixing mechanism allows to extract D-wave observables from the CERN data. | contribution 0.35 | 0.74 | 0.07 | asserted 0.80 |
| s3 | Analysis of the full D-wave subsystem for transversity tau=u reveals rho^0(770) mixing in the amplitudes |D^U_u|^2 and |D^N_u|^2 and a violation of a cosine condition by the amplitudes D^2U_u and D^2N_u. | result 1.00 | 0.94 | 0.08 | asserted 1.00 |
| s4 | We determine spin mixing and S-matrix helicity amplitudes from which we calculate pipi phase-shifts delta^0_S and delta_P below KKbar threshold. | result 0.76 | 0.95 | 0.07 | asserted 1.00 |
| s5 | The spin mixing and the violation of the cosine condition arise from a non-standard pure dephasing interaction of the produced final S-matrix state rho_f(S) with a quantum state rho(E) of a quantum environment to produce the observed state rho_f(O). | interpretation 0.99 | 0.60 | 0.40 | asserted 0.97 |
| s6 | Our analysis determines that the number of interacting degrees of freedom of the environment is M=4. | result 1.00 | 0.95 | 0.08 | asserted 1.00 |
| s7 | We identify the four eigenstates |e_k> that define the density matrix rho(E) with the four neutrino mass eigenstates |m_k> with m_4 due to light sterile neutrino. | interpretation 0.89 | 0.86 | 0.14 | asserted 1.00 |
| s8 | We call the quantum states rho(E) dark neutrinos and propose to identify them with the particles of a distinct component of dark matter. | interpretation 0.98 | 0.68 | 0.43 | speculative 0.68 |
| s9 | Dephasing interactions are not rare events but they require high statistics experiments with polarized targets for their detection. | interpretation 0.55 | 0.21 | 0.08 | asserted 1.00 |
| s10 | Our amplitude analysis illustrates this new kind of search for dark matter. | interpretation 0.67 | 0.72 | 0.17 | asserted 0.98 |
What was examined, and what was not
- arXiv listing abstract v3
- full text
- figures and tables
- references and citing sentences
- relations to other papers
- P abstract
- S sections
- T body sentences
- C citations
- R cross-paper relations
The paper
Original abstract
We present the first amplitude analysis of the CERN data on pi(-)p->pi(-)pi(+)n on polarized target at 17.2 GeV/c for dipion masses 580-1080 MeV at low momentum transfer using spin mixing mechanism. The analysis of the S- and P-wave subsystem determines a unique solution for the spin mixing transversity amplitudes S_tau, L_tau, the corresponding S-matrix amplitudes S^0_tau, L^0_tau and the rho^0(770)-f_0(980) spin mixing parameters. The spin mixing mechanism allows to extract D-wave observables from the CERN data. Analysis of the full D-wave subsystem for transversity tau=u reveals rho^0(770) mixing in the amplitudes |D^U_u|^2 and |D^N_u|^2 and a violation of a cosine condition by the amplitudes D^2U_u and D^2N_u. We determine spin mixing and S-matrix helicity amplitudes from which we calculate pipi phase-shifts delta^0_S and delta_P below KKbar threshold. The spin mixing and the violation of the cosine condition arise from a non-standard pure dephasing interaction of the produced final S-matrix state rho_f(S) with a quantum state rho(E) of a quantum environment to produce the observed state rho_f(O). Our analysis determines that the number of interacting degrees of freedom of the environment is M=4. We identify the four eigenstates |e_k> that define the density matrix rho(E) with the four neutrino mass eigenstates |m_k> with m_4 due to light sterile neutrino. We call the quantum states rho(E) dark neutrinos and propose to identify them with the particles of a distinct component of dark matter. Dephasing interactions are not rare events but they require high statistics experiments with polarized targets for their detection. Our amplitude analysis illustrates this new kind of search for dark matter.
Human review
How the literature uses it
2 arXiv papers cite this in 17 sentences
Papers citing it · 15 sentences without a confident label
Uses its data or values 1 paper
-
In Ref. [ref] we find that the dimension $M=4$.
Study of piN->pipiN processes on polarized targets: Quantum environment and its dephasing interaction with particle scattering · Evidence for a physical quantum environment · 0.84
Cites it as support 1 paper
-
The quantum environment is responsible not only for the generation of the non-unitary phases but also for the observed $ρ^0(770)-f_0(980)$ mixing [ref] .
Study of piN->pipiN processes on polarized targets: Quantum environment and its dephasing interaction with particle scattering · A physical interpretation of the unitary and non-unitary relative phases. · 0.99
What it cites · 54 sentences without a confident label
Uses the method or tool of 1 paper
-
When the polarization of the recoil nucleon is not measured the angular intensity takes the form [ref] [equation] We shall use the parametrization of the angular components $I_U,I_C,I_S,I_L$ due to Lutz and Rybicki [ref] [equation] The parametrization (2.2) assumes $P$-parity conservation.
Study of piN->pipiN processes on polarized targets: Quantum environment and its dephasing interaction with particle scattering · The observables in $πN →ππN$ on polarized target. · 0.97
Uses data or values from 2 papers
-
From the data given in Ref. [ref] we find $14/√(I_F[u])=21.5443469$.
Free streaming in mixed dark matter · Dark neutrinos and the formation of structure · 1.00
-
The data require that the fourth mass eigenstate $|m_4>$ carries the heaviest mass $m_4 ≈1$eV [ref] .
Search for short baseline $\nu_e$ disappearance with the T2K near detector · Dark neutrino hypothesis · 0.91
Compares with 1 paper
-
In that survey the Figure 11 shows that their two solutions for the moduli of the transversity amplitudes $|S_u|^2$ and $|S_d|^2$ are very close to our recent results [ref] presented in Figure 12 with $|S_d|^2$ showing evidence of spin mixing in both analyses.
A Brief Summary of Dictionary Learning Based Approach for Classification · A comparison with the Cracow phase-shift analysis · 0.95
Cites as support 4 papers
-
The contrast between the predicted unitary relative phases and the observed non-unitary phases presents evidence for the existence of a quantum environment and its interaction with particle scattering processes [ref] .
Study of piN->pipiN processes on polarized targets: Quantum environment and its dephasing interaction with particle scattering · Introduction. · 1.00
-
The consistency of the pure dephasing interaction with the Standard Model [ref] suggests that it is a universal environment in the entire Universe which may manifest itself in some astrophysical observations.
Study of piN->pipiN processes on polarized targets II.: The prediction of rho^0(770)-f_0(980) spin mixing · Dark neutrino hypothesis · 0.97
-
All these tensions can be resolved by adding a single light sterile neutrino to the standard $Λ$CDM model [ref] .
Constraints on Cosmological Models from Hubble Parameters Measurements · Dark neutrino hypothesis · 0.98
Cites as background 1 paper
-
Free streaming in a general mixed multicomponent dark matter was recently analysed by Boyanovsky [ref] .
Free streaming in mixed dark matter · Dark neutrinos and the formation of structure · 0.85
Discussion
Know something about this paper? Leave a comment, or highlight any passage above to comment on it.