Production of charmed tetraquarks from B c and B decays
Journal
Journal of Physics G: Nuclear and Particle Physics
Journal Volume
76
Journal Issue
5
Date Issued
2011
Author(s)
Abstract
Hadronic states composed of multi-quark flavors may exist in reality since they are not prohibited by quantum chromodynamics (QCD). Compact four-quark systems of a color singlet are classified as tetraquarks. To understand the properties of these states, more theoretical and experimental efforts are needed. In this work, we study charmed tetraquarks with three light flavors using flavor SU(3) symmetry. States with three different light quarks must be in a or a multiplet. We investigate the production of charmed tetraquarks X c in B →Xc (Xc)P and Bc→ XcP decays and decays. Whether the states with three light quarks belong to or can be determined by studying various tetraquark B and B c decays. We demonstrate that the decay amplitudes for these decays can be parametrized by a few irreducible SU(3) invariant amplitudes. We then derive relations for decay widths and charge-parity-violating rate difference, which can be examined experimentally. Although no experimental measurements are available yet, they might be accessed at the ongoing and forthcoming experiments such as LHCb and Belle-II. Measurements of these observables can not only provide useful information for the study of exotics spectroscopy but also provide valuable information towards a better understanding of some non-perturbative aspects of QCD.
Type
journal article