Light-Meson Spectroscopy at GlueX

Austregesilo, Alexander

doi:10.1142/S2010194518600297

Title: Light-Meson Spectroscopy at GlueX

Abstract

GlueX at Jefferson Lab aims to study the light meson spectrum with an emphasis on the search for light hybrid mesons. To this end, a linearly-polarized 9 GeV photon beam impinges on a hydrogen target contained within a hermetic detector with near-complete neutral and charged particle coverage. In 2016, the experiment completed its commissioning and subsequently started to take data in its design configuration. With the size of the data set so far, GlueX already exceeds previous experiments for polarized photoproduction in this energy regime. A selection of early results will be presented, focusing on beam asymmetries for pseudo-scalar and vector mesons. The potential to make significant contributions to the field of light-meson spectroscopy is highlighted by the observation of several known meson resonances. As a result, the strategy to map the light meson spectrum with amplitude analysis tools will be outlined.

Authors:

Austregesilo, Alexander ^[1]

Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Publication Date:: Thu May 03 00:00:00 EDT 2018

Research Org.:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

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

Contributing Org.:: GlueX Collaboration

OSTI Identifier:: 1493443

Report Number(s):: JLAB-PHY-18-2633; DOE/OR/23177-4332; arXiv:1801.05332
Journal ID: ISSN 2010-1945

Grant/Contract Number:: AC05-06OR23177

Resource Type:: Accepted Manuscript

Journal Name:: International Journal of Modern Physics: Conference Series

Additional Journal Information:: Journal Volume: 46; Journal ID: ISSN 2010-1945

Publisher:: World Scientific

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; light meson; spectroscopy; amplitude analysis; photoproduction; charmonium

Citation Formats


                    Austregesilo, Alexander. Light-Meson Spectroscopy at GlueX.  United States: N. p., 2018. 
Web.  doi:10.1142/S2010194518600297.

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                    Austregesilo, Alexander. Light-Meson Spectroscopy at GlueX.  United States.  https://doi.org/10.1142/S2010194518600297

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                    Austregesilo, Alexander. Thu .  
"Light-Meson Spectroscopy at GlueX".  United States.  https://doi.org/10.1142/S2010194518600297.  https://www.osti.gov/servlets/purl/1493443.

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@article{osti_1493443,

  title        = {Light-Meson Spectroscopy at GlueX},

  author       = {Austregesilo, Alexander},

  abstractNote = {GlueX at Jefferson Lab aims to study the light meson spectrum with an emphasis on the search for light hybrid mesons. To this end, a linearly-polarized 9 GeV photon beam impinges on a hydrogen target contained within a hermetic detector with near-complete neutral and charged particle coverage. In 2016, the experiment completed its commissioning and subsequently started to take data in its design configuration. With the size of the data set so far, GlueX already exceeds previous experiments for polarized photoproduction in this energy regime. A selection of early results will be presented, focusing on beam asymmetries for pseudo-scalar and vector mesons. The potential to make significant contributions to the field of light-meson spectroscopy is highlighted by the observation of several known meson resonances. As a result, the strategy to map the light meson spectrum with amplitude analysis tools will be outlined.},

  doi          = {10.1142/S2010194518600297},

  journal      = {International Journal of Modern Physics: Conference Series},

  number       = ,

  volume       = 46,

  place        = {United States},

  year         = {Thu May 03 00:00:00 EDT 2018},

  month        = {Thu May 03 00:00:00 EDT 2018}

}

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Journal Article:

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https://doi.org/10.1142/S2010194518600297

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Cited by: 9 works

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Figures / Tables:

Fig. 1: The GlueX experimental setup.

All figures and tables (4 total)

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Works referenced in this record:

Observation of $J / ψ p$ Resonances Consistent with Pentaquark States in $Λ_{b}^{0} \to J / ψ K^{-} p$ Decays
journal, August 2015

Aaij, R.; Adeva, B.; Adinolfi, M.
Physical Review Letters, Vol. 115, Issue 7
DOI: 10.1103/PhysRevLett.115.072001

Design and construction of a high-energy photon polarimeter
journal, September 2017

Dugger, M.; Ritchie, B. G.; Sparks, N.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 867
DOI: 10.1016/j.nima.2017.05.026

Search for the Photoexcitation of Exotic Mesons in the $π^{+} π^{+} π^{-}$ System
journal, March 2009

Nozar, M.; Salgado, C.; Weygand, D. P.
Physical Review Letters, Vol. 102, Issue 10
DOI: 10.1103/PhysRevLett.102.102002

Studying the $P_{c} (4450)$ resonance in $J / ψ$ photoproduction off protons
journal, August 2016

Blin, A. N. Hiller; Fernández-Ramírez, C.; Jackura, A.
Physical Review D, Vol. 94, Issue 3
DOI: 10.1103/PhysRevD.94.034002

The GlueX DIRC project
journal, July 2016

Stevens, J.; Barbosa, F.; Bessuille, J.
Journal of Instrumentation, Vol. 11, Issue 07
DOI: 10.1088/1748-0221/11/07/C07010

Study of the $ρ^{'} (1600)$ Mass Region Using $γ p \to π^{+} π^{-} p$ at 20 GeV
journal, August 1984

Abe, K.; Bacon, T. C.; Ballam, J.
Physical Review Letters, Vol. 53, Issue 8
DOI: 10.1103/PhysRevLett.53.751

Exotic Meson Decay to $ω π^{0} π^{-}$
journal, January 2005

Lu, M.; Adams, G. S.; Adams, T.
Physical Review Letters, Vol. 94, Issue 3
DOI: 10.1103/PhysRevLett.94.032002

Photoproduction of charm near threshold
journal, January 2001

Brodsky, S. J.; Chudakov, E.; Hoyer, P.
Physics Letters B, Vol. 498, Issue 1-2
DOI: 10.1016/S0370-2693(00)01373-3

Neutral pion photoproduction in a Regge model
journal, October 2015

Mathieu, V.; Fox, G.; Szczepaniak, A. P.
Physical Review D, Vol. 92, Issue 7
DOI: 10.1103/PhysRevD.92.074013

Measurement of the beam asymmetry $Σ$ for $π^{0}$ and $η$ photoproduction on the proton at $E_{γ} = 9$ GeV
journal, April 2017

Al Ghoul, H.; Anassontzis, E. G.; Austregesilo, A.
Physical Review C, Vol. 95, Issue 4
DOI: 10.1103/PhysRevC.95.042201

Figures / Tables found in this record:

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Similar Records

Title: Light-Meson Spectroscopy at GlueX

Abstract

Citation Formats

Figures / Tables:

Observation of J / ψ p Resonances Consistent with Pentaquark States in Λ b 0 → J / ψ K − p Decays journal, August 2015

Design and construction of a high-energy photon polarimeter journal, September 2017

Search for the Photoexcitation of Exotic Mesons in the π + π + π − System journal, March 2009

Studying the P c ( 4450 ) resonance in J / ψ photoproduction off protons journal, August 2016

The GlueX DIRC project journal, July 2016

Study of the ρ ′ ( 1600 ) Mass Region Using γ p → π + π − p at 20 GeV journal, August 1984

Exotic Meson Decay to ω π 0 π − journal, January 2005

Photoproduction of charm near threshold journal, January 2001

Neutral pion photoproduction in a Regge model journal, October 2015

Measurement of the beam asymmetry Σ for π 0 and η photoproduction on the proton at E γ = 9 GeV journal, April 2017

Observation of $J / ψ p$ Resonances Consistent with Pentaquark States in $Λ_{b}^{0} \to J / ψ K^{-} p$ Decays
journal, August 2015

Design and construction of a high-energy photon polarimeter
journal, September 2017

Search for the Photoexcitation of Exotic Mesons in the $π^{+} π^{+} π^{-}$ System
journal, March 2009

Studying the $P_{c} (4450)$ resonance in $J / ψ$ photoproduction off protons
journal, August 2016

The GlueX DIRC project
journal, July 2016

Study of the $ρ^{'} (1600)$ Mass Region Using $γ p \to π^{+} π^{-} p$ at 20 GeV
journal, August 1984

Exotic Meson Decay to $ω π^{0} π^{-}$
journal, January 2005

Photoproduction of charm near threshold
journal, January 2001

Neutral pion photoproduction in a Regge model
journal, October 2015

Measurement of the beam asymmetry $Σ$ for $π^{0}$ and $η$ photoproduction on the proton at $E_{γ} = 9$ GeV
journal, April 2017