Production of X ( 3872 ) and a photon in e + e − annihilation

Braaten, Eric; He, Li-Ping; Ingles, Kevin

doi:10.1103/PhysRevD.101.014021

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:

Braaten, Eric;

; Ingles, Kevin

Publication Date:: 2020-01-28

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.

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                    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

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                    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.

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@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}

}

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Title: Production of X ( 3872 ) and a photon in e + e − annihilation

Abstract

Citation Formats

Multiquark States journal, October 2018

Searching for observable effects induced by anomalous triangle singularities journal, February 2016

Dalitz plot distributions in presence of triangle singularities journal, June 2016

Measurement of the Near-Threshold e + e − → D ( * ) ± D ( * ) ∓ Cross Section using Initial-State Radiation journal, February 2007

Study of e + e − → γ ω J / ψ and Observation of X ( 3872 ) → ω J / ψ journal, June 2019

e + e − → γ X ( 3872 ) near the D * D ¯ * threshold journal, November 2006

Hadronic molecules journal, February 2018

Hadronic and radiative D * widths journal, August 2013

Nonstandard heavy mesons and baryons: Experimental evidence journal, February 2018

Scattering of an ultrasoft pion and the X ( 3872 ) journal, August 2010

Observation of a Narrow Charmoniumlike State in Exclusive B ± → K ± π + π − J / ψ Decays journal, December 2003

Universality in few-body systems with large scattering length journal, June 2006

Production of X ( 3872 ) accompanied by a pion in B meson decay journal, October 2019

P -wave coupled channel effects in electron-positron annihilation journal, November 2016

Observation of e + e − → γ X ( 3872 ) at BESIII journal, March 2014

Novel Method for Precisely Measuring the X ( 3872 ) Mass journal, May 2019

Review of Particle Physics journal, August 2018

Exclusive open-charm near-threshold cross sections in a coupled-channel approach journal, January 2017

Bound States in Quantum Field Theory journal, October 1951

Exotics: Heavy pentaquarks and tetraquarks journal, November 2017

X(3872) DIAGNOSTICS WITH DECAYS TO $D{\bar D}\gamma$ journal, March 2006

Triangle singularities and XYZ quarkonium peaks journal, July 2015

Pion interactions in the X ( 3872 ) journal, August 2007

Determination of the X ( 3872 ) Meson Quantum Numbers journal, May 2013

Galilean-invariant effective field theory for the X ( 3872 ) journal, June 2015

Measurement of the near-threshold e + e − → D D ¯ cross section using initial-state radiation journal, January 2008

Heavy-quark QCD exotica journal, March 2017

Multiquark resonances journal, January 2017

Exotic hadrons with heavy flavors: X , Y , Z , and related states journal, June 2016

The hidden-charm pentaquark and tetraquark states journal, June 2016

Production of X ( 3872 ) accompanied by a soft pion at hadron colliders journal, November 2019

Triangle singularity in the production of X ( 3872 ) and a photon in e + e − annihilation journal, August 2019

A Relativistic Equation for Bound-State Problems journal, December 1951

The XYZ states revisited journal, July 2018

Title: Production of $X (3872)$ and a photon in $e^{+} e^{-}$ annihilation

Multiquark States
journal, October 2018

Searching for observable effects induced by anomalous triangle singularities
journal, February 2016

Dalitz plot distributions in presence of triangle singularities
journal, June 2016

Measurement of the Near-Threshold $e^{+} e^{-} \to D^{() \pm} D^{() \mp}$ Cross Section using Initial-State Radiation
journal, February 2007

Study of $e^{+} e^{-} \to γ ω J / ψ$ and Observation of $X (3872) \to ω J / ψ$
journal, June 2019

$e^{+} e^{-} \to γ X (3872)$ near the $D * \bar{D} *$ threshold
journal, November 2006

Hadronic molecules
journal, February 2018

Hadronic and radiative $D^{*}$ widths
journal, August 2013

Nonstandard heavy mesons and baryons: Experimental evidence
journal, February 2018

Scattering of an ultrasoft pion and the $X (3872)$
journal, August 2010

Observation of a Narrow Charmoniumlike State in Exclusive $B^{\pm} \to K^{\pm} π^{+} π^{-} J / ψ$ Decays
journal, December 2003

Universality in few-body systems with large scattering length
journal, June 2006

Production of X ( 3872 ) accompanied by a pion in B meson decay
journal, October 2019

P -wave coupled channel effects in electron-positron annihilation
journal, November 2016

Observation of $e^{+} e^{-} \to γ X (3872)$ at BESIII
journal, March 2014

Novel Method for Precisely Measuring the $X (3872)$ Mass
journal, May 2019

Review of Particle Physics
journal, August 2018

Exclusive open-charm near-threshold cross sections in a coupled-channel approach
journal, January 2017

Bound States in Quantum Field Theory
journal, October 1951

Exotics: Heavy pentaquarks and tetraquarks
journal, November 2017

X(3872) DIAGNOSTICS WITH DECAYS TO $D{\bar D}\gamma$
journal, March 2006

Triangle singularities and XYZ quarkonium peaks
journal, July 2015

Pion interactions in the $X (3872)$
journal, August 2007

Determination of the $X (3872)$ Meson Quantum Numbers
journal, May 2013

Galilean-invariant effective field theory for the $X (3872)$
journal, June 2015

Measurement of the near-threshold $e^{+} e^{-} \to D \bar{D}$ cross section using initial-state radiation
journal, January 2008

Heavy-quark QCD exotica
journal, March 2017

Multiquark resonances
journal, January 2017

Exotic hadrons with heavy flavors: X , Y , Z , and related states
journal, June 2016

The hidden-charm pentaquark and tetraquark states
journal, June 2016

Production of X ( 3872 ) accompanied by a soft pion at hadron colliders
journal, November 2019

Triangle singularity in the production of $X (3872)$ and a photon in $e^{+} e^{-}$ annihilation
journal, August 2019

A Relativistic Equation for Bound-State Problems
journal, December 1951

The XYZ states revisited
journal, July 2018