Excited bottom and bottom-strange mesons in the quark model

2016/10/06 by Qi-Fang Lü, Tingting Pan, Ting-Ting Pan +5 · 6 citations
Physics and Astronomy · #Quantum Chromodynamics and Particle Interactions #Particle physics theoretical and experimental studies #High-Energy Particle Collisions Research

paper · doi:10.1103/physrevd.94.074012

Abstract

In order to understand the possible qq quark-model assignments of the B_J(5840) and B_J(5960) recently reported by the LHCb Collaboration, we evaluate mass spectra, strong decays, and radiative decays of bottom and bottom-strange mesons in a nonrelativistic quark model. Comparing these predictions with the relevant experimental results, we suggest that the B_J(5840) and B_J(5960) can be identified as the B(2¹S₀) and B(1³D₃), respectively, and the B(5970) reported by the CDF Collaboration can be interpreted as the B(2³S₁) or B(1³D₃). Further precise measurements of the width, spin and decay modes of the B(5970) are needed to distinguish these two assignments. These predictions of bottom and bottom-strange mesons can provide useful information to further experimental investigations.

Cited by

• Ω baryon spectrum and their decays in a constituent quark model
• Unified unquenched quark model for heavy-light mesons with chiral dynamics
• Singly Cabibbo-suppressed hadronic weak decays of the Ω^- hyperon
• Unified Spectroscopic Study of Bottom Mesons and Doubly Bottom Baryons Using a Relativistic Flux-Tube Model
• Relativistic effects in M1 radiative decays of heavy-light mesons
• Studies of B s 2 ∗ ( 5840 ) 0 and B s 1 ( 5830 ) 0 mesons including the observation of the B s 2 ∗ ( 5840 ) 0 → B 0 K S 0 decay in proton-proton collisions at s = 8 TeV. [europepmc]

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