Evolution of the KbarN - piSigma system with M_pi^2 in a box from UCHPT

Molina, Raquel; Doring, Michael

doi:10.1063/1.4949419

Title: Evolution of the KbarN - piSigma system with M_pi^2 in a box from UCHPT

Conference · Sun May 01 00:00:00 EDT 2016

DOI:https://doi.org/10.1063/1.4949419· OSTI ID:1302249

Molina, Raquel ^[1]; Doring, Michael ^[2]

George Washington Univ., Washington, DC (United States)
George Washington Univ., Washington, DC (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

The Lambda(1405) baryon is difficult to detect in experiment, absent in many quark model calculations, and supposedly manifested through a two-pole structure. Its uncommon properties made it subject to numerous experimental and theoretical studies in recent years. Finite-volume Lattice-QCD eigenvalues for different quark masses were recently reported by the Adelaide group. We compare these eigenvalues to predictions of a model based on Unitary Chiral Perturbation Theory (UCHPT). The UCHPT calculation predicts the quark mass dependence remarkably well. It also explains the overlap pattern with different meson-baryon components, mainly piSigma and KbarN, at different quark masses. More accurate Lattice QCD data are required to draw definite conclusions on the nature of the Lambda(1405).

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

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

DOE Contract Number:: AC05-06OR23177; NSFCAREER grant No. 1452055; PIF grant No. 1415459

OSTI ID:: 1302249

Report Number(s):: JLAB-THY-16-2325; DOE/OR/23177-3896

Resource Relation:: Conference: Hadron 2015, 13-18 Sep 2015. Newport News, Virginia, USA

Country of Publication:: United States

Language:: English

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