• Open Access

Quarkonium radiative decays from the hadronic Paschen-Back effect

Sachio Iwasaki and Kei Suzuki
Phys. Rev. D 98, 054017 – Published 18 September 2018

Abstract

We study the radiative (E1 and M1) decays of P-wave quarkonia in a strong magnetic field based on the Lagrangian of potential nonrelativistic QCD. To investigate their properties, we implement a polarized wave function basis justified in the Paschen-Back limit. In a magnetic field stronger than the spin-orbit coupling, the wave functions of the P-wave quarkonia are drastically deformed by the Hadronic Paschen-Back effect. Such deformation leads to the anisotropy of the direction of decays from the P-wave quarkonia. The analytic formulas for the radiative decay widths in the nonrelativistic limit are shown, and the qualitative decay properties are discussed.

  • Figure
  • Received 4 June 2018

DOI:https://doi.org/10.1103/PhysRevD.98.054017

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)

Particles & FieldsNuclear PhysicsAtomic, Molecular & Optical

Authors & Affiliations

Sachio Iwasaki1,2,* and Kei Suzuki3,†

  • 1Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan
  • 2Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
  • 3KEK Theory Center, Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan

  • *iwasaki.s.aa@m.titech.ac.jp
  • kei.suzuki@kek.jp

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Issue

Vol. 98, Iss. 5 — 1 September 2018

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