Production of and a photon in 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:
- 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 = {Tue Jan 28 00:00:00 EST 2020},
month = {Tue Jan 28 00:00:00 EST 2020}
}
https://doi.org/10.1103/PhysRevD.101.014021
Web of Science
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