The decays of (B)over-bar0, (B)over-bars0 into (B)over-bar- into ηc plus a scalar or vector meson

被引：11

作者：

Xie, Ju-Jun ^{[1
]}

Li, Gang ^{[2
]}

机构：

[1] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China

[2] Qufu Normal Univ, Sch Phys & Engn, Qufu 273165, Peoples R China

来源：

EUROPEAN PHYSICAL JOURNAL C | 2018年 / 78卷 / 10期

基金：

中国国家自然科学基金;

关键词：

CHIRAL DYNAMICS; F(0)(980); F(0)(500); J/PSI;

D O I：

10.1140/epjc/s10052-018-6353-4

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We investigate the decays of (B) over bar (0)(s), (B) over bar (0) and (B) over bar (-) into ti c plus a scalar or vector meson in a theoretical framework by taking into account the dominant process for the weak decay of (B) over bar meson into eta(c) and a q (q) over bar pair. After hadronization of this q (q) over bar component into pairs of pseudoscalar mesons we obtain certain weights for the pseudoscalar meson-pseudoscalar meson components. In addition, the (B) over bar (0) and (B) over bar (0)(s) decays into eta(c) and rho(0), K* are evaluated and compared to the eta (c) and phi production. The calculation is based on the postulation that the scalar mesons f(0)(500), f(0)(980) and a(0)(980) are dynamically generated states from the pseudoscalar meson-pseudoscalar meson interactions in S-wave. Up to a global normalization factor, the nn, KK and nn invariant mass distributions for the decays of (B) over bar (0)(s) -> eta(c)pi(+)pi(-), (B) over bar (0)(s) -> eta(c) K+K-, (B) over bar (0) -> eta(c)pi(+)pi(-), (B) over bar (0) -> eta(c) K(+)K(- )and (B) over bar (0 ) -> eta(c)pi(0)eta, B- -> eta(cKK-)-K-0 are predicted. Comparison is made with the limited experimental information available and other theoretical calcualtions. Further comparison of these results with coming LHCb measurements will be very valuable to make progress in our understanding of the nature of the low lying scalar mesons, f(0)(500), f(0)(980) and a(0)(980).

引用

页数：7

共 35 条

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