• Open Access

Relativistic corrections to decays of heavy baryons in the quark model

Ahmad Jafar Arifi, Daiki Suenaga, and Atsushi Hosaka
Phys. Rev. D 103, 094003 – Published 10 May 2021

Abstract

We investigate relativistic corrections of an order 1/m2, where m is the constituent quark mass, to heavy baryon decays by emitting one pseudoscalar meson in the quark model. This work is motivated by shortcomings in the previous studies in the nonrelativistic quark model for decays of the Roper-like states, such as Λc(2765). We find that the relativistic corrections due to the internal motion of quarks are essential ingredients in improving their decay properties, such that the decay widths are significantly increased. In addition, such corrections can explain a phenomenological suppression of the quark axial-vector coupling constant gAq for the Σc(2455) and Σc(2520) decays.

  • Figure
  • Received 19 February 2021
  • Accepted 8 April 2021

DOI:https://doi.org/10.1103/PhysRevD.103.094003

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

  1. Physical Systems
Particles & Fields

Authors & Affiliations

Ahmad Jafar Arifi1,2,*, Daiki Suenaga1,†, and Atsushi Hosaka1,3,‡

  • 1Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, Osaka 567-0047, Japan
  • 2Asia Pacific Center for Theoretical Physics (APCTP), Pohang, Gyeongbuk 37673, South Korea
  • 3Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan

  • *ahmad.jafar.arifi@apctp.org
  • suenaga@rcnp.osaka-u.ac.jp
  • hosaka@rcnp.osaka-u.ac.jp

Article Text

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Issue

Vol. 103, Iss. 9 — 1 May 2021

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