Angular decay coefficients of J/ψ mesons at forward rapidity from p+p collisions at √s = 510 GeV

Adare, A.; Azmoun, B.; Aidala, C.; Ajitanand, N. N.; Akiba, Y.; Akimoto, R.; Alfred, M.

doi:10.1103/PhysRevD.95.092003

Title: Angular decay coefficients of J/ψ mesons at forward rapidity from p+p collisions at √s = 510 GeV

Abstract

In this paper, we report the first measurement of the full angular distribution for inclusive J/ψ → μ⁺μ^- decays in p+p collisions at √s = 510 GeV. The measurements are made for J/ψ transverse momentum 2 < p_T < 10 GeV/c and rapidity 1.2 < y < 2.2 in the Helicity, Collins-Soper, and Gottfried-Jackson reference frames. In all frames the polar coefficient λ_θ is strongly negative at low p_T and becomes close to zero at high p_T, while the azimuthal coefficient λ_Φ is close to zero at low p_T, and becomes slightly negative at higher p_T. The frame-independent coefficient λ^~ is strongly negative at all p_T in all frames. Finally, the data are compared to the theoretical predictions provided by nonrelativistic quantum chromodynamics models.

Authors:: Adare, A.; Azmoun, B.; Aidala, C.; Ajitanand, N. N.; Akiba, Y.; Akimoto, R.; Alfred, M.; et al.

Publication Date:: 2017-04-13

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP)

Contributing Org.:: PHENIX Collaboration

OSTI Identifier:: 1354690

Alternate Identifier(s):: OSTI ID: 1378145

Report Number(s):: BNL-113789-2017-JA
Journal ID: ISSN 2470-0010

Grant/Contract Number:: SC0012704

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review D

Additional Journal Information:: Journal Volume: 95; Journal Issue: 9; Journal ID: ISSN 2470-0010

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats


                    Adare, A., Azmoun, B., Aidala, C., Ajitanand, N. N., Akiba, Y., Akimoto, R., Alfred, M., and et al. Angular decay coefficients of J/ψ mesons at forward rapidity from p+p collisions at √s = 510 GeV.  United States: N. p., 2017. 
Web.  doi:10.1103/PhysRevD.95.092003.

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                    Adare, A., Azmoun, B., Aidala, C., Ajitanand, N. N., Akiba, Y., Akimoto, R., Alfred, M., & et al. Angular decay coefficients of J/ψ mesons at forward rapidity from p+p collisions at √s = 510 GeV.  United States.  https://doi.org/10.1103/PhysRevD.95.092003

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                    Adare, A., Azmoun, B., Aidala, C., Ajitanand, N. N., Akiba, Y., Akimoto, R., Alfred, M., and et al. Thu .  
"Angular decay coefficients of J/ψ mesons at forward rapidity from p+p collisions at √s = 510 GeV".  United States.  https://doi.org/10.1103/PhysRevD.95.092003.  https://www.osti.gov/servlets/purl/1354690.

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@article{osti_1354690,

  title        = {Angular decay coefficients of J/ψ mesons at forward rapidity from p+p collisions at √s = 510 GeV},

  author       = {Adare, A. and Azmoun, B. and Aidala, C. and Ajitanand, N. N. and Akiba, Y. and Akimoto, R. and Alfred, M. and et al.},

  abstractNote = {In this paper, we report the first measurement of the full angular distribution for inclusive J/ψ → μ+μ- decays in p+p collisions at √s = 510 GeV. The measurements are made for J/ψ transverse momentum 2 < pT < 10 GeV/c and rapidity 1.2 < y < 2.2 in the Helicity, Collins-Soper, and Gottfried-Jackson reference frames. In all frames the polar coefficient λθ is strongly negative at low pT and becomes close to zero at high pT, while the azimuthal coefficient λΦ is close to zero at low pT, and becomes slightly negative at higher pT. The frame-independent coefficient λ~ is strongly negative at all pT in all frames. Finally, the data are compared to the theoretical predictions provided by nonrelativistic quantum chromodynamics models.},

  doi          = {10.1103/PhysRevD.95.092003},

  journal      = {Physical Review D},

  number       = 9,

  volume       = 95,

  place        = {United States},

  year         = {2017},

  month        = {4}

}

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Title: Angular decay coefficients of J/ψ mesons at forward rapidity from p+p collisions at √s = 510 GeV

Abstract

Citation Formats

Υ Production at Fermilab Tevatron and LHC Energies journal, October 2008

Yields and polarizations of prompt J/ψ and ψ(2S) production in hadronic collisions journal, May 2015

Quantitative tests of color evaporation: charmonium production journal, January 1997

Producing heavy quark flavors in hadronic collisions—' A test of quantum chromodynamics journal, March 1977

Polarization of prompt J / ψ in p p → J / ψ + X at s = 200 GeV journal, February 2011

Transverse momentum dependence of J / ψ polarization at midrapidity in p + p collisions at s = 200 GeV journal, July 2010

Polarizations of J / ψ and ψ ( 2 S ) Mesons Produced in p p ¯ Collisions at s = 1.96 TeV journal, September 2007

J / ψ Polarization in 800-GeV p − C u Interactions journal, November 2003

J / ψ and ψ ( 2 S ) Production in p p ¯ Collisions at √ s = 1.8 TeV journal, July 1997

J / ψ Production at HERA journal, April 2009

Measurement of J/ψ polarization in pp collisions at $\sqrt{s}=7\ \mathrm{TeV}$ journal, November 2013

On the connection between production mechanism and decay of resonances at high energies journal, July 1964

High-energy-physics event generation with Pythia 6.1 journal, April 2001

Angular distributions of leptons from J/ψ’s produced in 920 GeV fixed-target proton-nucleus collisions journal, February 2009

QCD corrections to J / ψ polarisation in pp collisions at RHIC journal, January 2011

J / ψ Production versus Transverse Momentum and Rapidity in p + p Collisions at s = 200 GeV journal, June 2007

Optimal spin-quantization axes for quarkonium with large transverse momentum journal, March 2009

Polarization of prompt J / ψ at the Fermilab Tevatron journal, September 2000

On the general theory of collisions for particles with spin journal, August 1959

PHENIX detector overview journal, March 2003

Rigorous QCD analysis of inclusive annihilation and production of heavy quarkonium journal, February 1995

J / ψ polarization in photoproduction up to the next-to-leading order of QCD journal, August 2009

PHENIX Muon Arms journal, March 2003

J / ψ Polarization from Fixed-Target to Collider Energies journal, April 2009

Direct J / ψ and ψ ′ polarization and cross sections at the Fermilab Tevatron journal, May 1997

PHENIX inner detectors journal, March 2003

Hadronic production of J/ψ and γ: Transverse momentum distributions journal, June 1981

Angular distribution of dileptons in high-energy hadron collisions journal, October 1977

Towards the experimental clarification of quarkonium polarization journal, September 2010

J / ψ Polarization in p p Collisions at s = 7 TeV journal, February 2012

$Υ$ Production at Fermilab Tevatron and LHC Energies
journal, October 2008

Yields and polarizations of prompt J/ψ and ψ(2S) production in hadronic collisions
journal, May 2015

Quantitative tests of color evaporation: charmonium production
journal, January 1997

Producing heavy quark flavors in hadronic collisions—' A test of quantum chromodynamics
journal, March 1977

Polarization of prompt $J / ψ$ in $p p \to J / ψ + X$ at $\sqrt{s} = 200 GeV$
journal, February 2011

Transverse momentum dependence of $J / ψ$ polarization at midrapidity in $p + p$ collisions at $\sqrt{s} = 200 GeV$
journal, July 2010

Polarizations of $J / ψ$ and $ψ (2 S)$ Mesons Produced in $p \bar{p}$ Collisions at $\sqrt{s} = 1.96 TeV$
journal, September 2007

$J / ψ$ Polarization in 800-GeV $p − C u$ Interactions
journal, November 2003

$J / ψ$ and $ψ (2 S)$ Production in $p \bar{p}$ Collisions at $\sqrt s = 1.8 TeV$
journal, July 1997

$J / ψ$ Production at HERA
journal, April 2009

Measurement of J/ψ polarization in pp collisions at $\sqrt{s}=7\ \mathrm{TeV}$
journal, November 2013

On the connection between production mechanism and decay of resonances at high energies
journal, July 1964

High-energy-physics event generation with Pythia 6.1
journal, April 2001

Angular distributions of leptons from J/ψ’s produced in 920 GeV fixed-target proton-nucleus collisions
journal, February 2009

QCD corrections to $J / ψ$ polarisation in pp collisions at RHIC
journal, January 2011

$J / ψ$ Production versus Transverse Momentum and Rapidity in $p + p$ Collisions at $\sqrt{s} = 200 GeV$
journal, June 2007

Optimal spin-quantization axes for quarkonium with large transverse momentum
journal, March 2009

Polarization of prompt $J / ψ$ at the Fermilab Tevatron
journal, September 2000

On the general theory of collisions for particles with spin
journal, August 1959

PHENIX detector overview
journal, March 2003

Rigorous QCD analysis of inclusive annihilation and production of heavy quarkonium
journal, February 1995

$J / ψ$ polarization in photoproduction up to the next-to-leading order of QCD
journal, August 2009

PHENIX Muon Arms
journal, March 2003

$J / ψ$ Polarization from Fixed-Target to Collider Energies
journal, April 2009

Direct $J / ψ$ and $ψ^{'}$ polarization and cross sections at the Fermilab Tevatron
journal, May 1997

PHENIX inner detectors
journal, March 2003

Hadronic production of J/ψ and γ: Transverse momentum distributions
journal, June 1981

Angular distribution of dileptons in high-energy hadron collisions
journal, October 1977

Towards the experimental clarification of quarkonium polarization
journal, September 2010

$J / ψ$ Polarization in $p p$ Collisions at $\sqrt{s} = 7 TeV$
journal, February 2012