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Title: 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 P-wave charm-meson pair into the $X$ 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 of the peak. We show that the absorptive contribution to the cross section for $$e^+ e^- \to D^{*0} \bar D^{*0} \to X \gamma$$, which was calculated previously by Dubynskiy and Voloshin, does not give a good approximation to the peak from the triangle singularity.

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:
1595516
Alternate Identifier(s):
OSTI ID: 1782853
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: 101 Journal Issue: 1; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
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. Production of X ( 3872 ) and a photon in e + e − annihilation. United States: N. p., 2020. Web. doi:10.1103/PhysRevD.101.014021.
Braaten, Eric, He, Li-Ping, & Ingles, Kevin. Production of X ( 3872 ) and a photon in e + e − annihilation. United States. https://doi.org/10.1103/PhysRevD.101.014021
Braaten, Eric, He, Li-Ping, and Ingles, Kevin. Tue . "Production of X ( 3872 ) and a photon in e + e − annihilation". United States. https://doi.org/10.1103/PhysRevD.101.014021.
@article{osti_1595516,
title = {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 P-wave charm-meson pair into the $X$ 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 of the peak. We show that the absorptive contribution to the cross section for $e^+ e^- \to D^{*0} \bar D^{*0} \to X \gamma$, which was calculated previously by Dubynskiy and Voloshin, does not give a good approximation to the peak from the triangle singularity.},
doi = {10.1103/PhysRevD.101.014021},
journal = {Physical Review D},
number = 1,
volume = 101,
place = {United States},
year = {2020},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1103/PhysRevD.101.014021

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Cited by: 3 works
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