Production of Ds0(2590)+ in B nonleptonic decays

Shuang Tao Wang; Su Yan Pei; Tianhong Wang; Guo Li Wang

doi:10.1140/epjc/s10052-024-12796-5

Production of Ds0(2590)+ in B nonleptonic decays

Shuang Tao Wang
, Su Yan Pei
, Tianhong Wang
, Guo Li Wang^*

^*Corresponding author for this work

Hebei University
Hebei Key Laboratory of High-precision Computation and Application of Quantum Field Theory
Hebei Research Center of the Basic Discipline for Computational Physics
School of Physics, Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

In 2021, a new charm-strange meson, D_s0(2590)⁺, was discovered, which is believed to be the D_s⁺(2¹S₀). However, its low mass and wide width are challenged by theoretical results. Given the small branching ratio of the current production channel, resulting in a small number of events and large errors, we suggest searching for the D_s0(2590)⁺ in the B meson nonleptonic decays, B_q→D_q^(∗)D_s0(2590)⁺ (q=u,d), followed by D_s0(2590)⁺→D^∗K. We find that Br(B_q→D_q^(∗)D_s0(2590)⁺)×Br(D_s0(2590)⁺→D^∗K)=(2.16∼2.82)×10^-3 is very large, and the result is not sensitive to the mass of D_s0(2590)⁺. Due to the large branching ratio, numerous D_s0(2590)⁺ events are expected. This study is based on the framework of the instantaneous Bethe–Salpeter equation, and the relativistic wave functions used for mesons contain different partial waves. The contributions of the different partial waves are also studied.

Original language	English
Article number	464
Journal	European Physical Journal C
Volume	84
Issue number	5
DOIs	https://doi.org/10.1140/epjc/s10052-024-12796-5
State	Published - May 2024
Externally published	Yes

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@article{a32bf36ab9ff486587a717c955bd87a8,

title = "Production of Ds0(2590)+ in B nonleptonic decays",

abstract = "In 2021, a new charm-strange meson, Ds0(2590)+, was discovered, which is believed to be the Ds+(21S0). However, its low mass and wide width are challenged by theoretical results. Given the small branching ratio of the current production channel, resulting in a small number of events and large errors, we suggest searching for the Ds0(2590)+ in the B meson nonleptonic decays, Bq→Dq(∗)Ds0(2590)+ (q=u,d), followed by Ds0(2590)+→D∗K. We find that Br(Bq→Dq(∗)Ds0(2590)+){\texttimes}Br(Ds0(2590)+→D∗K)=(2.16∼2.82){\texttimes}10-3 is very large, and the result is not sensitive to the mass of Ds0(2590)+. Due to the large branching ratio, numerous Ds0(2590)+ events are expected. This study is based on the framework of the instantaneous Bethe{\textendash}Salpeter equation, and the relativistic wave functions used for mesons contain different partial waves. The contributions of the different partial waves are also studied.",

author = "Wang, \{Shuang Tao\} and Pei, \{Su Yan\} and Tianhong Wang and Wang, \{Guo Li\}",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2024.",

year = "2024",

month = may,

doi = "10.1140/epjc/s10052-024-12796-5",

language = "英语",

volume = "84",

journal = "European Physical Journal C",

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TY - JOUR

T1 - Production of Ds0(2590)+ in B nonleptonic decays

AU - Wang, Shuang Tao

AU - Pei, Su Yan

AU - Wang, Tianhong

AU - Wang, Guo Li

PY - 2024/5

Y1 - 2024/5

N2 - In 2021, a new charm-strange meson, Ds0(2590)+, was discovered, which is believed to be the Ds+(21S0). However, its low mass and wide width are challenged by theoretical results. Given the small branching ratio of the current production channel, resulting in a small number of events and large errors, we suggest searching for the Ds0(2590)+ in the B meson nonleptonic decays, Bq→Dq(∗)Ds0(2590)+ (q=u,d), followed by Ds0(2590)+→D∗K. We find that Br(Bq→Dq(∗)Ds0(2590)+)×Br(Ds0(2590)+→D∗K)=(2.16∼2.82)×10-3 is very large, and the result is not sensitive to the mass of Ds0(2590)+. Due to the large branching ratio, numerous Ds0(2590)+ events are expected. This study is based on the framework of the instantaneous Bethe–Salpeter equation, and the relativistic wave functions used for mesons contain different partial waves. The contributions of the different partial waves are also studied.

AB - In 2021, a new charm-strange meson, Ds0(2590)+, was discovered, which is believed to be the Ds+(21S0). However, its low mass and wide width are challenged by theoretical results. Given the small branching ratio of the current production channel, resulting in a small number of events and large errors, we suggest searching for the Ds0(2590)+ in the B meson nonleptonic decays, Bq→Dq(∗)Ds0(2590)+ (q=u,d), followed by Ds0(2590)+→D∗K. We find that Br(Bq→Dq(∗)Ds0(2590)+)×Br(Ds0(2590)+→D∗K)=(2.16∼2.82)×10-3 is very large, and the result is not sensitive to the mass of Ds0(2590)+. Due to the large branching ratio, numerous Ds0(2590)+ events are expected. This study is based on the framework of the instantaneous Bethe–Salpeter equation, and the relativistic wave functions used for mesons contain different partial waves. The contributions of the different partial waves are also studied.

UR - https://www.scopus.com/pages/publications/85192139458

U2 - 10.1140/epjc/s10052-024-12796-5

DO - 10.1140/epjc/s10052-024-12796-5

M3 - 文章

AN - SCOPUS:85192139458

SN - 1434-6044

VL - 84

JO - European Physical Journal C

JF - European Physical Journal C

IS - 5

M1 - 464

ER -

Production of Ds0(2590)+ in B nonleptonic decays

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