S- and p-wave structure of S = −1 meson–baryon scattering in the resonance region

Sadasivan, D.; Mai, M.; Döring, M.

doi:10.1016/j.physletb.2018.12.035

Title: S- and p-wave structure of S = −1 meson–baryon scattering in the resonance region

Abstract

Here, we perform a simultaneous analysis of s- and p-waves of the S = –1 meson-baryon scattering amplitude using all low-energy experimental data. For the first time, differential cross section data are included for chiral unitary coupled-channel models. From this model s- and p-wave amplitudes are extracted and both well-known I(J^P) = 0(1/2^-) s-wave states as well as a new I(J^P) = 0(1/2⁺) state absent in quark models and lattice QCD results. Multiple statistical and phenomenological tests suggest that, while the data clearly require an I = 1 p-wave resonance the new state just accounts for the absence of the decuplet Σ(1385)3/2⁺ in the model.

Authors:

Sadasivan, D.; Mai, M.;

Publication Date:: 2019-02-01

Research Org.:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP)

OSTI Identifier:: 1488348

Alternate Identifier(s):: OSTI ID: 1489231

Report Number(s):: JLAB-THY-18-2699; DOE/OR/23177-4578; arXiv:1805.04534
Journal ID: ISSN 0370-2693; S0370269318309626; PII: S0370269318309626

Grant/Contract Number:: SC0016582; AC05-06OR23177; MA 7156/1; 1415459; PHY-1452055

Resource Type:: Published Article

Journal Name:: Physics Letters B

Additional Journal Information:: Journal Name: Physics Letters B Journal Volume: 789 Journal Issue: C; Journal ID: ISSN 0370-2693

Publisher:: Elsevier

Country of Publication:: Netherlands

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats


                    Sadasivan, D., Mai, M., and Döring, M. S- and p-wave structure of S = −1 meson–baryon scattering in the resonance region.  Netherlands: N. p., 2019. 
Web.  https://doi.org/10.1016/j.physletb.2018.12.035.

Copy to clipboard


                    Sadasivan, D., Mai, M., & Döring, M. S- and p-wave structure of S = −1 meson–baryon scattering in the resonance region.  Netherlands.  https://doi.org/10.1016/j.physletb.2018.12.035

Copy to clipboard


                    Sadasivan, D., Mai, M., and Döring, M. Fri .  
"S- and p-wave structure of S = −1 meson–baryon scattering in the resonance region".  Netherlands.  https://doi.org/10.1016/j.physletb.2018.12.035.

Copy to clipboard


                    
@article{osti_1488348,

  title        = {S- and p-wave structure of S = −1 meson–baryon scattering in the resonance region},

  author       = {Sadasivan, D. and Mai, M. and Döring, M.},

  abstractNote = {Here, we perform a simultaneous analysis of s- and p-waves of the S = –1 meson-baryon scattering amplitude using all low-energy experimental data. For the first time, differential cross section data are included for chiral unitary coupled-channel models. From this model s- and p-wave amplitudes are extracted and both well-known I(JP) = 0(1/2-) s-wave states as well as a new I(JP) = 0(1/2+) state absent in quark models and lattice QCD results. Multiple statistical and phenomenological tests suggest that, while the data clearly require an I = 1 p-wave resonance the new state just accounts for the absence of the decuplet Σ(1385)3/2+ in the model.},

  doi          = {10.1016/j.physletb.2018.12.035},

  journal      = {Physics Letters B},

  number       = C,

  volume       = 789,

  place        = {Netherlands},

  year         = {2019},

  month        = {2}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Publisher's Version of Record
https://doi.org/10.1016/j.physletb.2018.12.035

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 2 works

Citation information provided by
Web of Science

Figures / Tables:

Table 1: Left: Parameters of the best fit. The values in parentheses behind the χ²dof show the contributions from data sets (a, b, c), respectively. The generalized variance is given by the determinant of the covariance matrix, |Σ|, and is related to the volume of the error ellipse as describedmore »

All figures and tables (9 total)

Save / Share:

Export Metadata

Save to My Library

Figures / Tables found in this record:

Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.

Similar Records in DOE PAGES and OSTI.GOV collections:

Unitary Bethe-Salpeter Methods in Two- and Three-Body Systems

Thesis/Dissertation Sadasivan, Daniel

The study of resonances, unstable particles formed in particle scattering, is motivated by the questions about the strong interaction and the composition of hadrons. In order to advance this study in the intermediate energy region, a variety of techniques are used. In this thesis, we present work done on two different analyses that use the principle of unitarity and the Bethe-Salpeter equation to study the resonances Lambda(1405), Sigma(1385), and a1(1260). Firstly, we perform a simultaneous analysis of Sand P-waves of the Strangeness = -1 two-body meson-baryon scattering amplitude using all low-energy data. For the first time, differential cross section datamore »« less
https://doi.org/10.2172/1728591

Full Text Available
Towards the minimal spectrum of excited baryons

Journal Article Landay, J. ; Mai, M. ; Doring, Michael ; ... - Physical Review D

In the light baryon sector the resonances can be broad and overlapping and are in most cases not directly visible in the cross section data. Automatized model selection techniques that introduce penalties for choosing particular resonance sets can be used to determine the minimally needed set of resonances to describe the data. Several possible penalization schemes for the occurrence of resonances are compared. As an application we perform a blindfold identification of hyperon resonances in themore »« less
Cited by 5
https://doi.org/10.1103/PhysRevD.99.016001

Full Text Available
Chiral extrapolations of the $ρ (770)$ meson in $N_{f} = 2 + 1$ lattice QCD simulations

Journal Article Hu, B. ; Molina, R. ; Döring, M. ; ... - Physical Review D

Recentmore »« less
Cited by 9
https://doi.org/10.1103/PhysRevD.96.034520

Full Text Available
Dalitz plots and lineshape of $a_{1} (1260)$ from a relativistic three-body unitary approach

Journal Article Sadasivan, D. ; Mai, M. ; Akdag, H. ; ... - Physical Review D

We formulate the final state interaction of themore »« less
https://doi.org/10.1103/PhysRevD.101.094018

Full Text Available
Finite-Volume Spectrum of $π^{+} π^{+}$ and $π^{+} π^{+} π^{+}$ Systems

Journal Article Mai, M. ; Döring, M. - Physical Review Letters

Here, the ab initio understanding of hadronic three-body systems above threshold, such as exotic resonances or the baryon spectrum, requires the mapping of the finite-volume eigenvalue spectrum, produced in lattice QCD calculations, to the infinite volume. We present the first application of such a formalism to a physical system in form of three interacting positively charged pions. The results for the ground state energies agree with the available lattice QCD results by the NPLQCD collaboration at unphysical pion masses. Extrapolations to physical pion masses are performed using input from effective field theory. The excited energy spectrum is predicted. This demonstratesmore »« less
Cited by 22
https://doi.org/10.1103/PhysRevLett.122.062503

Similar Records

Title: S- and p-wave structure of S = −1 meson–baryon scattering in the resonance region

Abstract

Citation Formats

Figures / Tables:

Title: S- and p-wave structure of S = −1 meson–baryon scattering in the resonance region