Measurement of proton-dissociative diffractive photoproduction of vector mesons at large momentum transfer at HERA: The ZEUS collaboration
Diffractive photoproduction of vector mesons, γp → VY, where Y is a proton-dissociative system, has been measured in e+p interactions with the ZEUS detector at HERA using an integrated luminosity of 25 pb-1. The differential cross section, dσ/dt, is presented for 1.2 < -t < 12 GeV2, wh...
| Những tác giả chính: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Định dạng: | Journal article |
| Ngôn ngữ: | English |
| Được phát hành: |
2003
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| _version_ | 1826271845292179456 |
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| author | Chekanov, S Krakauer, D Magill, S Musgrave, B Repond, J Yoshida, R Mattingly, M Antonioli, P Bari, G Basile, M Bellagamba, L Boscherini, D Bruni, A Bruni, G Cara Romeo, G Cifarelli, L Cindolo, F Contin, A Corradi, M De Pasquale, S Giusti, P Iacobucci, G Levi, G Margotti, A Nania, R |
| author_facet | Chekanov, S Krakauer, D Magill, S Musgrave, B Repond, J Yoshida, R Mattingly, M Antonioli, P Bari, G Basile, M Bellagamba, L Boscherini, D Bruni, A Bruni, G Cara Romeo, G Cifarelli, L Cindolo, F Contin, A Corradi, M De Pasquale, S Giusti, P Iacobucci, G Levi, G Margotti, A Nania, R |
| author_sort | Chekanov, S |
| collection | OXFORD |
| description | Diffractive photoproduction of vector mesons, γp → VY, where Y is a proton-dissociative system, has been measured in e+p interactions with the ZEUS detector at HERA using an integrated luminosity of 25 pb-1. The differential cross section, dσ/dt, is presented for 1.2 < -t < 12 GeV2, where t is the square of the four-momentum transferred to the vector meson. The data span the range in photon-proton centre-of-mass energy, W, from 80 GeV to 120 GeV. The t distributions are well fit by a power law, dσ/dt ∝ (-t)-n. The slope of the effective Pomeron trajectory, measured from the W dependence of the ρ0 and φ cross sections in bins of t, is consistent with zero. The ratios dσγp→φY/dt to dσγp→ρ0Y/dt and dσγp→J/ψY/dt to dσγp→ρ0Y/dt increase with increasing -t. Decay-angle analyses for ρ0, φ and J/ψ mesons have been carried out. For the ρ0 and φ mesons, contributions from single and double helicity flip are observed. The results are compared to expectations of theoretical models. |
| first_indexed | 2024-03-06T22:03:09Z |
| format | Journal article |
| id | oxford-uuid:4f4b4b54-26a8-462b-aa10-ac2cb711a5b4 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T22:03:09Z |
| publishDate | 2003 |
| record_format | dspace |
| spelling | oxford-uuid:4f4b4b54-26a8-462b-aa10-ac2cb711a5b42022-03-26T16:06:18ZMeasurement of proton-dissociative diffractive photoproduction of vector mesons at large momentum transfer at HERA: The ZEUS collaborationJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:4f4b4b54-26a8-462b-aa10-ac2cb711a5b4EnglishSymplectic Elements at Oxford2003Chekanov, SKrakauer, DMagill, SMusgrave, BRepond, JYoshida, RMattingly, MAntonioli, PBari, GBasile, MBellagamba, LBoscherini, DBruni, ABruni, GCara Romeo, GCifarelli, LCindolo, FContin, ACorradi, MDe Pasquale, SGiusti, PIacobucci, GLevi, GMargotti, ANania, RDiffractive photoproduction of vector mesons, γp → VY, where Y is a proton-dissociative system, has been measured in e+p interactions with the ZEUS detector at HERA using an integrated luminosity of 25 pb-1. The differential cross section, dσ/dt, is presented for 1.2 < -t < 12 GeV2, where t is the square of the four-momentum transferred to the vector meson. The data span the range in photon-proton centre-of-mass energy, W, from 80 GeV to 120 GeV. The t distributions are well fit by a power law, dσ/dt ∝ (-t)-n. The slope of the effective Pomeron trajectory, measured from the W dependence of the ρ0 and φ cross sections in bins of t, is consistent with zero. The ratios dσγp→φY/dt to dσγp→ρ0Y/dt and dσγp→J/ψY/dt to dσγp→ρ0Y/dt increase with increasing -t. Decay-angle analyses for ρ0, φ and J/ψ mesons have been carried out. For the ρ0 and φ mesons, contributions from single and double helicity flip are observed. The results are compared to expectations of theoretical models. |
| spellingShingle | Chekanov, S Krakauer, D Magill, S Musgrave, B Repond, J Yoshida, R Mattingly, M Antonioli, P Bari, G Basile, M Bellagamba, L Boscherini, D Bruni, A Bruni, G Cara Romeo, G Cifarelli, L Cindolo, F Contin, A Corradi, M De Pasquale, S Giusti, P Iacobucci, G Levi, G Margotti, A Nania, R Measurement of proton-dissociative diffractive photoproduction of vector mesons at large momentum transfer at HERA: The ZEUS collaboration |
| title | Measurement of proton-dissociative diffractive photoproduction of vector mesons at large momentum transfer at HERA: The ZEUS collaboration |
| title_full | Measurement of proton-dissociative diffractive photoproduction of vector mesons at large momentum transfer at HERA: The ZEUS collaboration |
| title_fullStr | Measurement of proton-dissociative diffractive photoproduction of vector mesons at large momentum transfer at HERA: The ZEUS collaboration |
| title_full_unstemmed | Measurement of proton-dissociative diffractive photoproduction of vector mesons at large momentum transfer at HERA: The ZEUS collaboration |
| title_short | Measurement of proton-dissociative diffractive photoproduction of vector mesons at large momentum transfer at HERA: The ZEUS collaboration |
| title_sort | measurement of proton dissociative diffractive photoproduction of vector mesons at large momentum transfer at hera the zeus collaboration |
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