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Title: Triangle singularity in the production of X ( 3872 ) and a photon in e + e - annihilation

Abstract

If the $X(3872)$ is a weakly bound charm-meson molecule, it can be produced in $e^+ e^-$ annihilation by the creation of $$D^{*0} \bar D^{*0}$$ from a virtual photon followed by the rescattering of the charm-meson pair into $X$ and a photon. A triangle singularity produces a narrow peak in the cross section for $$e^+ e^- \to X \gamma$$ about 2.2 MeV above the $$D^{*0} \bar{D}^{*0}$$ threshold. We predict the normalized cross section in the region near the peak. The peak from the triangle singularity may be observable by the BESIII detector.

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:
1559078
Alternate Identifier(s):
OSTI ID: 1602471
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: 3; 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

Citation Formats

Braaten, Eric, He, Li-Ping, and Ingles, Kevin. Triangle singularity in the production of X(3872) and a photon in e+e- annihilation. United States: N. p., 2019. Web. https://doi.org/10.1103/PhysRevD.100.031501.
Braaten, Eric, He, Li-Ping, & Ingles, Kevin. Triangle singularity in the production of X(3872) and a photon in e+e- annihilation. United States. https://doi.org/10.1103/PhysRevD.100.031501
Braaten, Eric, He, Li-Ping, and Ingles, Kevin. Thu . "Triangle singularity in the production of X(3872) and a photon in e+e- annihilation". United States. https://doi.org/10.1103/PhysRevD.100.031501.
@article{osti_1559078,
title = {Triangle singularity in the production of X(3872) and a photon in e+e- annihilation},
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 in $e^+ e^-$ annihilation by the creation of $D^{*0} \bar D^{*0}$ from a virtual photon followed by the rescattering of the charm-meson pair into $X$ and a photon. A triangle singularity produces a narrow peak in the cross section for $e^+ e^- \to X \gamma$ about 2.2 MeV above the $D^{*0} \bar{D}^{*0}$ threshold. We predict the normalized cross section in the region near the peak. The peak from the triangle singularity may be observable by the BESIII detector.},
doi = {10.1103/PhysRevD.100.031501},
journal = {Physical Review D},
number = 3,
volume = 100,
place = {United States},
year = {2019},
month = {8}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1103/PhysRevD.100.031501

Citation Metrics:
Cited by: 6 works
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