The Λ(1405) pole structure from Lattice QCD: a coupled-channel πΣ - (K)over-barN study

被引：0

作者：

Bulava, John ^{[1
]}

Cid-Mora, Barbara ^{[2
,3
]}

Hanlon, Andrew D. ^{[4
]}

Hoerz, Ben ^{[5
]}

Mohler, Daniel ^{[2
,3
]}

Morningstar, Colin ^{[6
]}

Moscoso, Joseph ^{[7
]}

Nicholson, Amy ^{[7
]}

Romero-Lopez, Fernando ^{[8
]}

Skinner, Sarah ^{[7
]}

Walker-Loud, Andre ^{[9
]}

机构：

[1] Ruhr Univ Bochum, Inst Theoret Phys 2, Fak Phys & Astron, D-44780 Bochum, Germany

[2] GSI Helmholtz Ctr Heavy Ion Res, Darmstadt, Germany

[3] Tech Univ Darmstadt, Inst Kernphys, Schlossgartenstr 2, D-64289 Darmstadt, Germany

[4] Brookhaven Natl Lab, Phys Dept, Upton, NY 11973 USA

[5] Intel Deutschland GmbH, Dornacher Str 1, D-85622 Feldkirchen, Germany

[6] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA

[7] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27516 USA

[8] MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA

[9] Lawrence Berkeley Natl Lab, Nucl Sci Div, Berkeley, CA 94720 USA

来源：

16TH INTERNATIONAL CONFERENCE ON MESON-NUCLEON PHYSICS AND THE STRUCTURE OF THE NUCLEON, MENU 2023 | 2024年 / 303卷

基金：

美国国家科学基金会;

关键词：

CHIRAL DYNAMICS; BOUND-STATES; RESONANCES; SCATTERING;

D O I：

10.1051/epjconf/202430301004

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

This report summarizes results of the first lattice QCD calculation of coupled-channel pi Sigma - (K) over barN scattering in the Lambda(1405) region. This study was carried out using a single CLS ensemble with a heavier-than-physical pion mass m(pi) approximate to 200 MeV and a lighter-than-physical kaon mass m(K) approximate to 487 MeV. Once the finite-volume energy spectrum has been reliably extracted, the Luscher method was employed to obtain scattering amplitudes. Through a variety of parametrizations of the two-channel K-matrix, the final results show a virtual bound state below the pi Sigma threshold and a resonance right below (K) over barN.

引用

页数：7

共 50 条

[21] Study of the (D)over-barN Interaction in a QCD Coulomb Gauge Quark Model
Fontoura, C. E.
Krein, G.
Vizcarra, V. E.
19TH INTERNATIONAL IUPAP CONFERENCE ON FEW-BODY PROBLEMS IN PHYSICS, 2009, 3
[22] On the Origin and Movement of the Poles in the Coupled Channels Model for (K)over-barN Interactions
Cieply, A.
Smejkal, J.
FEW-BODY SYSTEMS, 2013, 54 (7-10) : 1183 - 1185
[23] Coupled-channel study of γp→K+ Λ
Chiang, WT
Tabakin, F
Lee, TSH
Saghai, B
PHYSICS LETTERS B, 2001, 517 (1-2) : 101 - 108
[24] A coupled-channel lattice study of the resonance-like structure Zc(3900)
Chen, Ting
Chen, Ying
Gong, Ming
Liu, Chuan
Liu, Liuming
Liu, Yu-Bin
Liu, Zhaofeng
Ma, Jian-Ping
Werner, Markus
Zhang, Jian-Bo
CHINESE PHYSICS C, 2019, 43 (10)
[25] Dynamically generated hadronic states in the (K)over-barN and ηN coupled-channels interactions
Cieply, Ales
INTERNATIONAL CONFERENCE ON EXOTIC ATOMS AND RELATED TOPICS - EXA2017, 2018, 181
[26] Constraints on the chiral unitary (K)over-barN amplitude from πΣK+ photoproduction data
Mai, Maxim
Meissner, Ulf-G
EUROPEAN PHYSICAL JOURNAL A, 2015, 51 (03): : 1 - 10
[27] Dynamical coupled-channel study of K+Λ photoproduction
Juliá-Díaz, B
Saghai, B
Tabakin, F
Chiang, WT
Lee, TSH
Li, Z
NUCLEAR PHYSICS A, 2005, 755 : 463C - 466C
[28] Charmonium χ c0 and χ c2 resonances in coupled-channel scattering from lattice QCD
Wilson, David J.
Thomas, Christopher E.
Dudek, Jozef J.
Edwards, Robert G.
PHYSICAL REVIEW D, 2024, 109 (11)
[29] From (K)over-barN Interactions to (K)over-bar-Nuclear Quasi-Bound States
Cieply, Ales
Hrtankova, Jaroslava
Mares, Jiri
Friedman, Eliahu
Gal, Avraham
Ramos, Angels
PROCEEDINGS OF THE 15TH INTERNATIONAL CONFERENCE ON MESON-NUCLEON PHYSICS AND THE STRUCTURE OF THE NUCLEON, 2020, 2249
[30] Coupled-channel ΛcK+ - pDs interaction in the flavor SU(3) limit of lattice QCD
Etminan, Faisal
Sasaki, Kenji
Inoue, Takashi
PHYSICAL REVIEW D, 2024, 109 (07)

← 1 2 3 4 5 →