Observation of Exclusive Charmonium Production and gamma gamma -->mu+mu- in pp-bar Collisions at sqrt[s]=1.96 TeV
In CDF we have observed the reactions p+p̅ →p+X+p̅ , with X being a centrally produced J/ψ, ψ(2S), or χ[subscript c0], and γγ→μ[superscript +]μ[superscript -] in pp̅ collisions at √s=1.96 TeV. The event signature requires two oppositely charged central muons, and either no other particles or one a...
| Main Authors: | , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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American Physical Society
2010
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| Online Access: | http://hdl.handle.net/1721.1/51997 https://orcid.org/0000-0002-6047-4211 |
| _version_ | 1811086278723108864 |
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| author | Xie, Si Knuteson, Bruce O. Henderson, C. Hahn, Kristian Allan Gomez-Ceballos, Guillelmo Choudalakis, Georgios Paus, Christoph M. E. Makhoul, Khaldoun Goncharov, Maxim Bauer, Gerry P |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Xie, Si Knuteson, Bruce O. Henderson, C. Hahn, Kristian Allan Gomez-Ceballos, Guillelmo Choudalakis, Georgios Paus, Christoph M. E. Makhoul, Khaldoun Goncharov, Maxim Bauer, Gerry P |
| author_sort | Xie, Si |
| collection | MIT |
| description | In CDF we have observed the reactions p+p̅ →p+X+p̅ , with X being a centrally produced J/ψ, ψ(2S), or χ[subscript c0], and γγ→μ[superscript +]μ[superscript -] in pp̅ collisions at √s=1.96 TeV. The event signature requires two oppositely charged central muons, and either no other particles or one additional photon detected. Exclusive vector meson production is as expected for elastic photoproduction, γ+p→J/ψ(ψ(2S))+p, observed here for the first time in hadron-hadron collisions. We also observe exclusive χ[subscript c0]→J/ψ+γ. The cross sections dσ/dy|[subscript y=0] for J/ψ, ψ(2S), and χ[subscript c0] are 3.92±0.25(stat)±0.52(syst) nb, 0.53±0.09(stat)±0.10(syst) nb, and 76±10(stat)±10(syst) nb, respectively, and the continuum is consistent with QED. We put an upper limit on the cross section for Odderon exchange in exclusive J/ψ production. |
| first_indexed | 2024-09-23T13:23:38Z |
| format | Article |
| id | mit-1721.1/51997 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:23:38Z |
| publishDate | 2010 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/519972023-02-26T05:58:34Z Observation of Exclusive Charmonium Production and gamma gamma -->mu+mu- in pp-bar Collisions at sqrt[s]=1.96 TeV Observation of Exclusive Charmonium Production and γγ→μ[superscript +]μ[superscript]- in pp̅ Collisions at √s=1.96 TeV Xie, Si Knuteson, Bruce O. Henderson, C. Hahn, Kristian Allan Gomez-Ceballos, Guillelmo Choudalakis, Georgios Paus, Christoph M. E. Makhoul, Khaldoun Goncharov, Maxim Bauer, Gerry P Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Paus, Christoph M. E. Xie, Si Makhoul, K. Knuteson, Bruce O. Henderson, C. Hahn, Kristian Allan Goncharov, M. Gomez-Ceballos, Guillelmo Choudalakis, Georgios Bauer, Gerry P. Paus, Christoph M. E. In CDF we have observed the reactions p+p̅ →p+X+p̅ , with X being a centrally produced J/ψ, ψ(2S), or χ[subscript c0], and γγ→μ[superscript +]μ[superscript -] in pp̅ collisions at √s=1.96 TeV. The event signature requires two oppositely charged central muons, and either no other particles or one additional photon detected. Exclusive vector meson production is as expected for elastic photoproduction, γ+p→J/ψ(ψ(2S))+p, observed here for the first time in hadron-hadron collisions. We also observe exclusive χ[subscript c0]→J/ψ+γ. The cross sections dσ/dy|[subscript y=0] for J/ψ, ψ(2S), and χ[subscript c0] are 3.92±0.25(stat)±0.52(syst) nb, 0.53±0.09(stat)±0.10(syst) nb, and 76±10(stat)±10(syst) nb, respectively, and the continuum is consistent with QED. We put an upper limit on the cross section for Odderon exchange in exclusive J/ψ production. Academy of Finland Slovak R&D Agency Programa Consolider-Ingenio 2010, Spain Ministerio de Ciencia e Innovación, Spain Russian Foundation for Basic Research Institut National de Physique Nucleaire et Physique des Particules/CNRS Royal Society, United Kingdom Science and Technology Facilities Council, United Kingdom Korean Research Foundation Korean Science and Engineering Foundation Bundesministerium für Bildung und Forschung, Germany Alfred P. Sloan Foundation Swiss National Science Foundation National Science Council of the Republic of China Natural Sciences and Engineering Research Council of Canada Ministry of Education, Culture, Sports, Science and Technology of Japan Italian Istituto Nazionale di Fisica Nucleare National Science Foundation United States Department of Energy 2010-03-03T14:41:53Z 2010-03-03T14:41:53Z 2009-06 2009-02 Article http://purl.org/eprint/type/JournalArticle 0031-9007 http://hdl.handle.net/1721.1/51997 CDF Collaboration et al. “Observation of Exclusive Charmonium Production and gamma gamma -->mu+mu- in pp-bar Collisions at s=1.96 TeV.” Physical Review Letters 102.24 (2009): 242001. © 2009 The American Physical Society https://orcid.org/0000-0002-6047-4211 en_US http://dx.doi.org/10.1103/PhysRevLett.102.242001 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS |
| spellingShingle | Xie, Si Knuteson, Bruce O. Henderson, C. Hahn, Kristian Allan Gomez-Ceballos, Guillelmo Choudalakis, Georgios Paus, Christoph M. E. Makhoul, Khaldoun Goncharov, Maxim Bauer, Gerry P Observation of Exclusive Charmonium Production and gamma gamma -->mu+mu- in pp-bar Collisions at sqrt[s]=1.96 TeV |
| title | Observation of Exclusive Charmonium Production and gamma gamma -->mu+mu- in pp-bar Collisions at sqrt[s]=1.96 TeV |
| title_full | Observation of Exclusive Charmonium Production and gamma gamma -->mu+mu- in pp-bar Collisions at sqrt[s]=1.96 TeV |
| title_fullStr | Observation of Exclusive Charmonium Production and gamma gamma -->mu+mu- in pp-bar Collisions at sqrt[s]=1.96 TeV |
| title_full_unstemmed | Observation of Exclusive Charmonium Production and gamma gamma -->mu+mu- in pp-bar Collisions at sqrt[s]=1.96 TeV |
| title_short | Observation of Exclusive Charmonium Production and gamma gamma -->mu+mu- in pp-bar Collisions at sqrt[s]=1.96 TeV |
| title_sort | observation of exclusive charmonium production and gamma gamma mu mu in pp bar collisions at sqrt s 1 96 tev |
| url | http://hdl.handle.net/1721.1/51997 https://orcid.org/0000-0002-6047-4211 |
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