Measurement of D*± production and the charm contribution to F2 in deep inelastic scattering at HERA
The production of D*± (2010) mesons in deep inelastic scattering has been measured in the ZEUS detector at HERA using an integrated luminosity of 37 pb-1. The decay channels D*+ → D0π+ (+c.c.), with D0 → K-π+ or D0 → K-π-π+π+, have been used to identify the D mesons. The e+p cross section for inclus...
| Autors principals: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Idioma: | English |
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2000
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| _version_ | 1826288961325105152 |
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| author | Breitweg, J Chekanov, S Derrick, M Krakauer, D Magill, S Musgrave, B Pellegrino, A Repond, J Stanek, R Yoshida, R Mattingly, M Abbiendi, G Anselmo, F Antonioli, P Bari, G Basile, M Bellagamba, L Boscherini, D Bruni, A Bruni, G Cara Romeo, G Castellini, G Cifarelli, L Cindolo, F Contin, A |
| author_facet | Breitweg, J Chekanov, S Derrick, M Krakauer, D Magill, S Musgrave, B Pellegrino, A Repond, J Stanek, R Yoshida, R Mattingly, M Abbiendi, G Anselmo, F Antonioli, P Bari, G Basile, M Bellagamba, L Boscherini, D Bruni, A Bruni, G Cara Romeo, G Castellini, G Cifarelli, L Cindolo, F Contin, A |
| author_sort | Breitweg, J |
| collection | OXFORD |
| description | The production of D*± (2010) mesons in deep inelastic scattering has been measured in the ZEUS detector at HERA using an integrated luminosity of 37 pb-1. The decay channels D*+ → D0π+ (+c.c.), with D0 → K-π+ or D0 → K-π-π+π+, have been used to identify the D mesons. The e+p cross section for inclusive D*± production with 1 < Q2 < 600 GeV2 and 0.02 < y < 0.7 is 8.31±0.31(stat.)+0.30-0.50 (syst.) nb in the kinematic region 1.5 < pT(D*±) < 15 GeV and \η(D*±)\ < 1.5. Differential cross sections are consistent with a next-to-leading-order perturbative-QCD calculation when using charm-fragmentation models which take into account the interaction of the charm quark with the proton remnant. The observed cross section is extrapolated to the full kinematic region in pT(D*±) and η(D*±) in order to determine the charm contribution, Fcc̄2 (x, Q2), to the proton structure function. The ratio Fcc̄2/F2 rises from ≃10% at Q2 ≃ 1.8GeV2 to ≃30% at Q2 ≃130GeV2 for x values in the range 10-4 to 10-3. |
| first_indexed | 2024-03-07T02:21:38Z |
| format | Journal article |
| id | oxford-uuid:a41db4ae-a860-4283-bc77-0b655b440d75 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:21:38Z |
| publishDate | 2000 |
| record_format | dspace |
| spelling | oxford-uuid:a41db4ae-a860-4283-bc77-0b655b440d752022-03-27T02:31:48ZMeasurement of D*± production and the charm contribution to F2 in deep inelastic scattering at HERAJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a41db4ae-a860-4283-bc77-0b655b440d75EnglishSymplectic Elements at Oxford2000Breitweg, JChekanov, SDerrick, MKrakauer, DMagill, SMusgrave, BPellegrino, ARepond, JStanek, RYoshida, RMattingly, MAbbiendi, GAnselmo, FAntonioli, PBari, GBasile, MBellagamba, LBoscherini, DBruni, ABruni, GCara Romeo, GCastellini, GCifarelli, LCindolo, FContin, AThe production of D*± (2010) mesons in deep inelastic scattering has been measured in the ZEUS detector at HERA using an integrated luminosity of 37 pb-1. The decay channels D*+ → D0π+ (+c.c.), with D0 → K-π+ or D0 → K-π-π+π+, have been used to identify the D mesons. The e+p cross section for inclusive D*± production with 1 < Q2 < 600 GeV2 and 0.02 < y < 0.7 is 8.31±0.31(stat.)+0.30-0.50 (syst.) nb in the kinematic region 1.5 < pT(D*±) < 15 GeV and \η(D*±)\ < 1.5. Differential cross sections are consistent with a next-to-leading-order perturbative-QCD calculation when using charm-fragmentation models which take into account the interaction of the charm quark with the proton remnant. The observed cross section is extrapolated to the full kinematic region in pT(D*±) and η(D*±) in order to determine the charm contribution, Fcc̄2 (x, Q2), to the proton structure function. The ratio Fcc̄2/F2 rises from ≃10% at Q2 ≃ 1.8GeV2 to ≃30% at Q2 ≃130GeV2 for x values in the range 10-4 to 10-3. |
| spellingShingle | Breitweg, J Chekanov, S Derrick, M Krakauer, D Magill, S Musgrave, B Pellegrino, A Repond, J Stanek, R Yoshida, R Mattingly, M Abbiendi, G Anselmo, F Antonioli, P Bari, G Basile, M Bellagamba, L Boscherini, D Bruni, A Bruni, G Cara Romeo, G Castellini, G Cifarelli, L Cindolo, F Contin, A Measurement of D*± production and the charm contribution to F2 in deep inelastic scattering at HERA |
| title | Measurement of D*± production and the charm contribution to F2 in deep inelastic scattering at HERA |
| title_full | Measurement of D*± production and the charm contribution to F2 in deep inelastic scattering at HERA |
| title_fullStr | Measurement of D*± production and the charm contribution to F2 in deep inelastic scattering at HERA |
| title_full_unstemmed | Measurement of D*± production and the charm contribution to F2 in deep inelastic scattering at HERA |
| title_short | Measurement of D*± production and the charm contribution to F2 in deep inelastic scattering at HERA |
| title_sort | measurement of d production and the charm contribution to f2 in deep inelastic scattering at hera |
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