Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/131477
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Conde, P. | - |
dc.contributor.author | Garrido Beltrán, Lluís | - |
dc.contributor.author | Peralta, D. | - |
dc.contributor.author | HERA-B Collaboration | - |
dc.date.accessioned | 2019-04-04T14:16:21Z | - |
dc.date.available | 2019-04-04T14:16:21Z | - |
dc.date.issued | 2006-03-10 | - |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.uri | http://hdl.handle.net/2445/131477 | - |
dc.description.abstract | A new measurement of the b ¯ b production cross section in 920 GeV proton-nucleus collisions is presented by the HERA-B Collaboration. The b ¯ b production is tagged via inclusive bottom quark decays into J / ψ mesons by exploiting the longitudinal separation of J / ψ → l + l − decay vertices from the primary proton-nucleus interaction point. Both e + e − and μ + μ − channels are reconstructed for a total of 83 ± 12 inclusive b → J / ψ X events found. The combined analysis yields a b ¯ b to prompt J / ψ cross section ratio of Δ σ ( b ¯ b ) Δ σ J / ψ = 0.032 ± 0.005 stat ± 0.004 sys measured in the x F acceptance ( − 0.35 < x F < 0.15 ), extrapolated to σ ( b ¯ b ) = 14.9 ± 2.2 stat ± 2.4 sys nb/nucleon in the total phase space. | - |
dc.format.extent | 17 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Physical Society | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.73.052005 | - |
dc.relation.ispartof | Physical Review D, 2006, vol. 73, num. 5, p. 052005 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevD.73.052005 | - |
dc.rights | (c) American Physical Society, 2006 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Física de partícules | - |
dc.subject.classification | Col·lisions (Física) | - |
dc.subject.other | Particle physics | - |
dc.subject.other | Collisions (Physics) | - |
dc.title | Improved measurement of the b¯b production cross section in 920 GeV fixed-target proton-nucleus collisions | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 539027 | - |
dc.date.updated | 2019-04-04T14:16:21Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
539027.pdf | 564.83 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.