Measurement of the cross-section ratio σ ψ(2S) /σ J/ψ(1S) in exclusive photoproduction at HERA
Abstract The exclusive photoproduction reactions γp → J/ψ(1S)p and γp → ψ(2S)p have been measured at an ep centre-of-mass energy of 318 GeV with the ZEUS detector at HERA using an integrated luminosity of 373 pb −1. The measurement was made in the kinematic range 30 < W < 180 GeV, Q 2 < 1 G...
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2022-12-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP12(2022)164 |
| _version_ | 1827979576657051648 |
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| author | The ZEUS collaboration I. Abt M. Adamus R. Aggarwal V. Aushev O. Behnke A. Bertolin I. Bloch I. Brock N. H. Brook R. Brugnera A. Bruni P. J. Bussey A. Caldwell C. D. Catterall J. Chwastowski J. Ciborowski R. Ciesielski A. M. Cooper-Sarkar M. Corradi R. K. Dementiev S. Dusini J. Ferrando B. Foster E. Gallo D. Gangadharan A. Garfagnini A. Geiser G. Grzelak C. Gwenlan D. Hochman N. Z. Jomhari I. Kadenko U. Karshon P. Kaur R. Klanner U. Klein I. A. Korzhavina N. Kovalchuk M. Kuze B. B. Levchenko A. Levy B. Löhr E. Lohrmann A. Longhin F. Lorkowski I. Makarenko J. Malka S. Masciocchi K. Nagano J. D. Nam Yu. Onishchuk E. Paul I. Pidhurskyi A. Polini M. Przybycień A. Quintero I. Rubinsky M. Ruspa U. Schneekloth T. Schörner-Sadenius I. Selyuzhenkov M. Shchedrolosiev L. M. Shcheglova I. O. Skillicorn W. Słomiński A. Solano L. Stanco N. Stefaniuk B. Surrow K. Tokushuku J. Tomaszewska A. Trofymov O. Turkot T. Tymieniecka A. Verbytskyi W. A. T. Wan Abdullah K. Wichmann M. Wing S. Yamada Y. Yamazaki A. F. Żarnecki O. Zenaiev |
| author_facet | The ZEUS collaboration I. Abt M. Adamus R. Aggarwal V. Aushev O. Behnke A. Bertolin I. Bloch I. Brock N. H. Brook R. Brugnera A. Bruni P. J. Bussey A. Caldwell C. D. Catterall J. Chwastowski J. Ciborowski R. Ciesielski A. M. Cooper-Sarkar M. Corradi R. K. Dementiev S. Dusini J. Ferrando B. Foster E. Gallo D. Gangadharan A. Garfagnini A. Geiser G. Grzelak C. Gwenlan D. Hochman N. Z. Jomhari I. Kadenko U. Karshon P. Kaur R. Klanner U. Klein I. A. Korzhavina N. Kovalchuk M. Kuze B. B. Levchenko A. Levy B. Löhr E. Lohrmann A. Longhin F. Lorkowski I. Makarenko J. Malka S. Masciocchi K. Nagano J. D. Nam Yu. Onishchuk E. Paul I. Pidhurskyi A. Polini M. Przybycień A. Quintero I. Rubinsky M. Ruspa U. Schneekloth T. Schörner-Sadenius I. Selyuzhenkov M. Shchedrolosiev L. M. Shcheglova I. O. Skillicorn W. Słomiński A. Solano L. Stanco N. Stefaniuk B. Surrow K. Tokushuku J. Tomaszewska A. Trofymov O. Turkot T. Tymieniecka A. Verbytskyi W. A. T. Wan Abdullah K. Wichmann M. Wing S. Yamada Y. Yamazaki A. F. Żarnecki O. Zenaiev |
| author_sort | The ZEUS collaboration |
| collection | DOAJ |
| description | Abstract The exclusive photoproduction reactions γp → J/ψ(1S)p and γp → ψ(2S)p have been measured at an ep centre-of-mass energy of 318 GeV with the ZEUS detector at HERA using an integrated luminosity of 373 pb −1. The measurement was made in the kinematic range 30 < W < 180 GeV, Q 2 < 1 GeV2 and |t| < 1 GeV2, where W is the photon-proton centre-of-mass energy, Q 2 is the photon virtuality and t is the squared four-momentum transfer at the proton vertex. The decay channels used were J/ψ(1S) → μ + μ − , ψ(2S) → μ + μ − and ψ(2S) → J/ψ(1S)π + π − with subsequent decay J/ψ(1S) → μ + μ − . The ratio of the production cross sections, R = σ ψ(2S) /σ J/ψ(1S), has been measured as a function of W and |t| and compared to previous data in photoproduction and deep inelastic scattering and with predictions of QCD-inspired models of exclusive vector-meson production, which are in reasonable agreement with the data. |
| first_indexed | 2024-04-09T21:39:57Z |
| format | Article |
| id | doaj.art-46e697e2db8b48a0a0e277a2db83804e |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-04-09T21:39:57Z |
| publishDate | 2022-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-46e697e2db8b48a0a0e277a2db83804e2023-03-26T11:04:01ZengSpringerOpenJournal of High Energy Physics1029-84792022-12-0120221212710.1007/JHEP12(2022)164Measurement of the cross-section ratio σ ψ(2S) /σ J/ψ(1S) in exclusive photoproduction at HERAThe ZEUS collaborationI. Abt0M. Adamus1R. Aggarwal2V. Aushev3O. Behnke4A. Bertolin5I. Bloch6I. Brock7N. H. Brook8R. Brugnera9A. Bruni10P. J. Bussey11A. Caldwell12C. D. Catterall13J. Chwastowski14J. Ciborowski15R. Ciesielski16A. M. Cooper-Sarkar17M. Corradi18R. K. DementievS. Dusini19J. Ferrando20B. Foster21E. Gallo22D. Gangadharan23A. Garfagnini24A. Geiser25G. Grzelak26C. Gwenlan27D. Hochman28N. Z. Jomhari29I. Kadenko30U. Karshon31P. Kaur32R. Klanner33U. Klein34I. A. KorzhavinaN. Kovalchuk35M. Kuze36B. B. LevchenkoA. Levy37B. Löhr38E. Lohrmann39A. Longhin40F. Lorkowski41I. Makarenko42J. Malka43S. Masciocchi44K. Nagano45J. D. Nam46Yu. Onishchuk47E. Paul48I. Pidhurskyi49A. Polini50M. Przybycień51A. Quintero52I. Rubinsky53M. Ruspa54U. Schneekloth55T. Schörner-Sadenius56I. Selyuzhenkov57M. Shchedrolosiev58L. M. ShcheglovaI. O. Skillicorn59W. Słomiński60A. Solano61L. Stanco62N. Stefaniuk63B. Surrow64K. Tokushuku65J. Tomaszewska66A. Trofymov67O. Turkot68T. Tymieniecka69A. Verbytskyi70W. A. T. Wan Abdullah71K. Wichmann72M. Wing73S. Yamada74Y. Yamazaki75A. F. Żarnecki76O. Zenaiev77Max-Planck-Institut für PhysikNational Centre for Nuclear ResearchDST-Inspire Faculty, Department of Technology, SPPUDepartment of Nuclear Physics, National Taras Shevchenko University of KyivDeutsches Elektronen-Synchrotron DESYINFN PadovaDeutsches Elektronen-Synchrotron DESYPhysikalisches Institut der Universität BonnPhysics and Astronomy Department, University College LondonDipartimento di Fisica e Astronomia dell’ Università and INFNINFN BolognaSchool of Physics and Astronomy, University of GlasgowMax-Planck-Institut für PhysikDepartment of Physics, York UniversityThe Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of SciencesFaculty of Physics, University of WarsawDeutsches Elektronen-Synchrotron DESYDepartment of Physics, University of OxfordINFN BolognaINFN PadovaDeutsches Elektronen-Synchrotron DESYDepartment of Physics, University of OxfordHamburg University, Institute of Experimental PhysicsPhysikalisches Institut of the University of HeidelbergDipartimento di Fisica e Astronomia dell’ Università and INFNDeutsches Elektronen-Synchrotron DESYFaculty of Physics, University of WarsawDepartment of Physics, University of OxfordDepartment of Particle Physics and Astrophysics, Weizmann InstituteDeutsches Elektronen-Synchrotron DESYDepartment of Nuclear Physics, National Taras Shevchenko University of KyivDepartment of Particle Physics and Astrophysics, Weizmann InstituteSant Longowal Institute of Engineering and TechnologyHamburg University, Institute of Experimental PhysicsDeutsches Elektronen-Synchrotron DESYHamburg University, Institute of Experimental PhysicsDepartment of Physics, Tokyo Institute of TechnologyRaymond and Beverly Sackler Faculty of Exact Sciences, School of Physics, Tel Aviv UniversityDeutsches Elektronen-Synchrotron DESYHamburg University, Institute of Experimental PhysicsDipartimento di Fisica e Astronomia dell’ Università and INFNDeutsches Elektronen-Synchrotron DESYDeutsches Elektronen-Synchrotron DESYDeutsches Elektronen-Synchrotron DESYPhysikalisches Institut of the University of HeidelbergInstitute of Particle and Nuclear Studies, KEKDepartment of Physics, Temple UniversityDepartment of Nuclear Physics, National Taras Shevchenko University of KyivPhysikalisches Institut der Universität BonnInstitut für Kernphysik, Goethe UniversitätINFN BolognaAGH University of Science and Technology, Faculty of Physics and Applied Computer ScienceDepartment of Physics, Temple UniversityDeutsches Elektronen-Synchrotron DESYUniversità del Piemonte Orientale, Novara, and INFNDeutsches Elektronen-Synchrotron DESYDeutsches Elektronen-Synchrotron DESYGSI Helmholtzzentrum für Schwerionenforschung GmbHDeutsches Elektronen-Synchrotron DESYSchool of Physics and Astronomy, University of GlasgowDepartment of Physics, Jagellonian UniversityUniversità di Torino and INFNINFN PadovaDeutsches Elektronen-Synchrotron DESYDepartment of Physics, Temple UniversityInstitute of Particle and Nuclear Studies, KEKFaculty of Physics, University of WarsawDepartment of Nuclear Physics, National Taras Shevchenko University of KyivDeutsches Elektronen-Synchrotron DESYNational Centre for Nuclear ResearchMax-Planck-Institut für PhysikNational Centre for Particle Physics, Universiti MalayaDeutsches Elektronen-Synchrotron DESYPhysics and Astronomy Department, University College LondonInstitute of Particle and Nuclear Studies, KEKDepartment of Physics, Kobe UniversityFaculty of Physics, University of WarsawDeutsches Elektronen-Synchrotron DESYAbstract The exclusive photoproduction reactions γp → J/ψ(1S)p and γp → ψ(2S)p have been measured at an ep centre-of-mass energy of 318 GeV with the ZEUS detector at HERA using an integrated luminosity of 373 pb −1. The measurement was made in the kinematic range 30 < W < 180 GeV, Q 2 < 1 GeV2 and |t| < 1 GeV2, where W is the photon-proton centre-of-mass energy, Q 2 is the photon virtuality and t is the squared four-momentum transfer at the proton vertex. The decay channels used were J/ψ(1S) → μ + μ − , ψ(2S) → μ + μ − and ψ(2S) → J/ψ(1S)π + π − with subsequent decay J/ψ(1S) → μ + μ − . The ratio of the production cross sections, R = σ ψ(2S) /σ J/ψ(1S), has been measured as a function of W and |t| and compared to previous data in photoproduction and deep inelastic scattering and with predictions of QCD-inspired models of exclusive vector-meson production, which are in reasonable agreement with the data.https://doi.org/10.1007/JHEP12(2022)164DiffractionHeavy Quark ProductionLepton-Nucleon ScatteringQuarkonium |
| spellingShingle | The ZEUS collaboration I. Abt M. Adamus R. Aggarwal V. Aushev O. Behnke A. Bertolin I. Bloch I. Brock N. H. Brook R. Brugnera A. Bruni P. J. Bussey A. Caldwell C. D. Catterall J. Chwastowski J. Ciborowski R. Ciesielski A. M. Cooper-Sarkar M. Corradi R. K. Dementiev S. Dusini J. Ferrando B. Foster E. Gallo D. Gangadharan A. Garfagnini A. Geiser G. Grzelak C. Gwenlan D. Hochman N. Z. Jomhari I. Kadenko U. Karshon P. Kaur R. Klanner U. Klein I. A. Korzhavina N. Kovalchuk M. Kuze B. B. Levchenko A. Levy B. Löhr E. Lohrmann A. Longhin F. Lorkowski I. Makarenko J. Malka S. Masciocchi K. Nagano J. D. Nam Yu. Onishchuk E. Paul I. Pidhurskyi A. Polini M. Przybycień A. Quintero I. Rubinsky M. Ruspa U. Schneekloth T. Schörner-Sadenius I. Selyuzhenkov M. Shchedrolosiev L. M. Shcheglova I. O. Skillicorn W. Słomiński A. Solano L. Stanco N. Stefaniuk B. Surrow K. Tokushuku J. Tomaszewska A. Trofymov O. Turkot T. Tymieniecka A. Verbytskyi W. A. T. Wan Abdullah K. Wichmann M. Wing S. Yamada Y. Yamazaki A. F. Żarnecki O. Zenaiev Measurement of the cross-section ratio σ ψ(2S) /σ J/ψ(1S) in exclusive photoproduction at HERA Journal of High Energy Physics Diffraction Heavy Quark Production Lepton-Nucleon Scattering Quarkonium |
| title | Measurement of the cross-section ratio σ ψ(2S) /σ J/ψ(1S) in exclusive photoproduction at HERA |
| title_full | Measurement of the cross-section ratio σ ψ(2S) /σ J/ψ(1S) in exclusive photoproduction at HERA |
| title_fullStr | Measurement of the cross-section ratio σ ψ(2S) /σ J/ψ(1S) in exclusive photoproduction at HERA |
| title_full_unstemmed | Measurement of the cross-section ratio σ ψ(2S) /σ J/ψ(1S) in exclusive photoproduction at HERA |
| title_short | Measurement of the cross-section ratio σ ψ(2S) /σ J/ψ(1S) in exclusive photoproduction at HERA |
| title_sort | measurement of the cross section ratio σ ψ 2s σ j ψ 1s in exclusive photoproduction at hera |
| topic | Diffraction Heavy Quark Production Lepton-Nucleon Scattering Quarkonium |
| url | https://doi.org/10.1007/JHEP12(2022)164 |
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