Gravitational formfactors of the rho, pi, and K mesons in the light-cone QCD sum rules

Aliev T., Barakat T., Simsek K.

PHYSICAL REVIEW D, cilt.103, sa.5, 2021 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 103 Sayı: 5
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1103/physrevd.103.054001
  • Dergi Adı: PHYSICAL REVIEW D
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, INSPEC, zbMATH
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

By using the quark part of the energy-momentum tensor current, the gravitational formfactors of the rho, pi, and K mesons are calculated within the light-cone sum rules method. In the considered version, the energy-momentum tensor current is not conserved and as a result, for integer spin J, there appear 4J + 2 (2J + 1) formfactors, which correspond to the conservation (nonconservation) of the energy-momentum tensor current. The average mass radius of rho, pi, and K mesons as well as the gravitational quadrupole moment of the rho meson are calculated. We also compare our results with the one existing in the literature on these quantities.