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Title: Production of X ( 3872 ) accompanied by a pion in B meson decay

Abstract

If the $X(3872)$ is a weakly bound charm-meson molecule, it can be produced by the creation of $$D^{*0} \bar{D}^0$$ or $$D^{0} \bar{D}^{*0}$$ at short distances followed by the formation of the bound state from the charm-meson pairs. It can also be produced by the creation of $$D^{*} \bar{D}^*$$ at short distances followed by the rescattering of the charm mesons into $$X \pi$$. We use results of a previous isospin analysis of $B$ meson decays into $$K D^{(*)} \bar D^{(*)}$$ to estimate the short-distance amplitudes for creating $$D^* \bar D^*$$. We use an effective field theory for charm mesons and pions called XEFT to calculate the amplitudes for rescattering of $$D^{*} \bar{D}^*$$ into $$X \pi$$ with small relative momentum. The $$X\pi$$ invariant mass distribution is predicted to have a narrow peak near the $$D^{*} \bar{D}^*$$ threshold from a charm-meson triangle singularity. We estimate the branching fractions into the peak from the triangle singularity for the decays $$B^0 \to K^+ X \pi^-$$ and $$B^+ \to K^0 X \pi^+$$.

Authors:
; ORCiD logo;
Publication Date:
Research Org.:
The Ohio State Univ., Columbus, OH (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF)
OSTI Identifier:
1571677
Alternate Identifier(s):
OSTI ID: 1602448
Grant/Contract Number:  
SC0011726; PHY-1607190
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 100 Journal Issue: 7; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Exotic hadrons; charm mesons; effective fi eld theory

Citation Formats

Braaten, Eric, He, Li-Ping, and Ingles, Kevin. Production of X(3872) accompanied by a pion in B meson decay. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.100.074028.
Braaten, Eric, He, Li-Ping, & Ingles, Kevin. Production of X(3872) accompanied by a pion in B meson decay. United States. doi:10.1103/PhysRevD.100.074028.
Braaten, Eric, He, Li-Ping, and Ingles, Kevin. Tue . "Production of X(3872) accompanied by a pion in B meson decay". United States. doi:10.1103/PhysRevD.100.074028.
@article{osti_1571677,
title = {Production of X(3872) accompanied by a pion in B meson decay},
author = {Braaten, Eric and He, Li-Ping and Ingles, Kevin},
abstractNote = {If the $X(3872)$ is a weakly bound charm-meson molecule, it can be produced by the creation of $D^{*0} \bar{D}^0$ or $D^{0} \bar{D}^{*0}$ at short distances followed by the formation of the bound state from the charm-meson pairs. It can also be produced by the creation of $D^{*} \bar{D}^*$ at short distances followed by the rescattering of the charm mesons into $X \pi$. We use results of a previous isospin analysis of $B$ meson decays into $K D^{(*)} \bar D^{(*)}$ to estimate the short-distance amplitudes for creating $D^* \bar D^*$. We use an effective field theory for charm mesons and pions called XEFT to calculate the amplitudes for rescattering of $D^{*} \bar{D}^*$ into $X \pi$ with small relative momentum. The $X\pi$ invariant mass distribution is predicted to have a narrow peak near the $D^{*} \bar{D}^*$ threshold from a charm-meson triangle singularity. We estimate the branching fractions into the peak from the triangle singularity for the decays $B^0 \to K^+ X \pi^-$ and $B^+ \to K^0 X \pi^+$.},
doi = {10.1103/PhysRevD.100.074028},
journal = {Physical Review D},
number = 7,
volume = 100,
place = {United States},
year = {2019},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevD.100.074028

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Cited by: 6 works
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