Two-Pole Nature of the Λ(1405) Resonance from Lattice QCD

被引：7
作者：
Bulava, John [1 ]
Cid-Mora, Barbara [2 ]
Hanlon, Andrew D. [3 ]
Hoerz, Ben [4 ]
Mohler, Daniel [2 ,5 ]
Morningstar, Colin [6 ]
Moscoso, Joseph [7 ]
Nicholson, Amy [7 ]
Romero-Lopez, Fernando [8 ]
Skinner, Sarah [6 ]
Walker-Loud, Andre [9 ]
机构：
[1] Deutsch Elektronen Synchrotron DESY, Platanenallee 6, D-15738 Zeuthen, Germany
[2] GSI Helmholtz Ctr Heavy Ion Res, D-64291 Darmstadt, Germany
[3] Brookhaven Natl Lab, Phys Dept, Upton, NY 11973 USA
[4] Intel Deutschland GmbH, Dornacher Str 1, D-85622 Feldkirchen, Germany
[5] Tech Univ Darmstadt, Inst Kernphys, Schlossgartenstr 2, D-64289 Darmstadt, 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：
PHYSICAL REVIEW LETTERS | 2024年 / 132卷 / 05期
基金：
美国国家科学基金会;
关键词：
CHIRAL DYNAMICS; NUCLEON SCATTERING; STATES;
D O I：
10.1103/PhysRevLett.132.051901
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
This Letter presents the first lattice QCD computation of the coupled channel KE- over bar KN scattering amplitudes at energies near 1405 MeV. These amplitudes contain the resonance A(1405) with strangeness S = -1 and isospin, spin, and parity quantum numbers I(JP) = 0(1/2-). However, whether there is a single resonance or two nearby resonance poles in this region is controversial theoretically and experimentally. Using single -baryon and meson -baryon operators to extract the finite -volume stationary -state energies to obtain the scattering amplitudes at slightly unphysical quark masses corresponding to mK approximate to 200 MeV and mK approximate to 487 MeV, this study finds the amplitudes exhibit a virtual bound state below the KE threshold in addition to the established resonance pole just below the over bar KN threshold. Several parametrizations of the two -channel K matrix are employed to fit the lattice QCD results, all of which support the two -pole picture suggested by SU(3) chiral symmetry and unitarity.
引用
收藏
页数：7
相关论文
共 73 条
  • [1] Acharya S, 2023, EUR PHYS J C, V83, DOI 10.1140/epjc/s10052-023-11476-0
  • [2] Pole position of Λ (1405) measured in d(K-, n)πΣ reactions
    Aikawa, S.
    Ajimura, S.
    Akaishi, T.
    Asano, H.
    Beer, G.
    Berucci, C.
    Bragadireanu, M.
    Buehler, P.
    Busso, L.
    Cargnelli, M.
    Choi, S.
    Curceanu, C.
    Enomoto, S.
    Fujioka, H.
    Fujiwara, Y.
    Fukuda, T.
    Guaraldo, C.
    Hashimoto, T.
    Hayano, R. S.
    Hiraiwa, T.
    Iio, M.
    Iliescu, M.
    Inoue, K.
    Ishiguro, Y.
    Ishimoto, S.
    Ishikawa, T.
    Itahashi, K.
    Iwai, M.
    Iwasaki, M.
    Kanno, K.
    Kato, K.
    Kato, Y.
    Kawasaki, S.
    Kienle, P.
    Komatsu, Y.
    Kou, H.
    Ma, Y.
    Marton, J.
    Matsuda, Y.
    Mizoi, Y.
    Morra, O.
    Murayama, R.
    Nagae, T.
    Noumi, H.
    Ohnishi, H.
    Okada, S.
    Omar, Z.
    Outa, H.
    Piscicchia, K.
    Sada, Y.
    [J]. PHYSICS LETTERS B, 2023, 837
  • [3] Anisovich AV, 2020, EUR PHYS J A, V56, DOI 10.1140/epja/s10050-020-00142-8
  • [4] Azizi K, 2023, Arxiv, DOI arXiv:2306.07393
  • [5] A new measurement of kaonic hydrogen X-rays
    Bazzi, M.
    Beer, G.
    Bombelli, L.
    Bragadireanu, A. M.
    Cargnelli, M.
    Corradi, G.
    Curceanu , C.
    d'Uffizi, A.
    Fiorini, C.
    Frizzi, T.
    Ghio, F.
    Girolami, B.
    Guaraldo, C.
    Hayano, R. S.
    Iliescu, M.
    Ishiwatari, T.
    Iwasaki, M.
    Kienle, P.
    Sandri, P. Levi
    Longoni, A.
    Lucherini, V.
    Marton, J.
    Okada, S.
    Pietreanu, D.
    Ponta, T.
    Rizzo, A.
    Vidal, A. Romero
    Scordo, A.
    Shi, H.
    Sirghi, D. L.
    Sirghi, F.
    Tatsuno, H.
    Tudorache, A.
    Tudorache, V.
    Doce, O. Vazquez
    Widmann, E.
    Zmeskal, J.
    [J]. PHYSICS LETTERS B, 2011, 704 (03) : 113 - 117
  • [6] Scalar mesons in a finite volume
    Bernard, V.
    Lage, M.
    Meissner, U. -G.
    Rusetsky, A.
    [J]. JOURNAL OF HIGH ENERGY PHYSICS, 2011, (01):
  • [7] NEUTRON-PROTON SCATTERING WITH SPIN-ORBIT COUPLING .1. GENERAL EXPRESSIONS
    BLATT, JM
    BIEDENHARN, LC
    [J]. PHYSICAL REVIEW, 1952, 86 (03): : 399 - 404
  • [8] Two-particle multichannel systems in a finite volume with arbitrary spin
    Briceno, Raul A.
    [J]. PHYSICAL REVIEW D, 2014, 89 (07):
  • [9] Moving multichannel systems in a finite volume with application to proton-proton fusion
    Briceno, Raul A.
    Davoudi, Zohreh
    [J]. PHYSICAL REVIEW D, 2013, 88 (09):
  • [10] Setting the scale for the CLS 2+1 flavor ensembles
    Bruno, Mattia
    Korzec, Tomasz
    Schaefer, Stefan
    [J]. PHYSICAL REVIEW D, 2017, 95 (07)
12345678