Studies of the decays B+ -> p(p)over-barph(+) and observation of B+ -> (Lambda)over-bar(1520)p
Dynamics and direct CP violation in three-body charmless decays of charged B mesons to a proton, an antiproton and a light meson (pion or kaon) are studied using data, corresponding to an integrated luminosity of 1.0 fb-1, collected by the LHCb experiment in pp collisions at a center-of-mass energy...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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2013
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| _version_ | 1826260670555881472 |
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| author | Aaij, R Adeva, B Adinolfi, M Adrover, C Affolder, A Ajaltouni, Z Albrecht, J Alessio, F Alexander, M Ali, S Alkhazov, G Alvarez Cartelle, P Jr, A Amato, S Amerio, S Amhis, Y Anderlini, L Anderson, J Andreassen, R Andrews, J Appleby, R Gutierrez, O Archilli, F Artamonov, A Artuso, M |
| author_facet | Aaij, R Adeva, B Adinolfi, M Adrover, C Affolder, A Ajaltouni, Z Albrecht, J Alessio, F Alexander, M Ali, S Alkhazov, G Alvarez Cartelle, P Jr, A Amato, S Amerio, S Amhis, Y Anderlini, L Anderson, J Andreassen, R Andrews, J Appleby, R Gutierrez, O Archilli, F Artamonov, A Artuso, M |
| author_sort | Aaij, R |
| collection | OXFORD |
| description | Dynamics and direct CP violation in three-body charmless decays of charged B mesons to a proton, an antiproton and a light meson (pion or kaon) are studied using data, corresponding to an integrated luminosity of 1.0 fb-1, collected by the LHCb experiment in pp collisions at a center-of-mass energy of 7 TeV. Production spectra are determined as a function of Dalitz-plot and helicity variables. The forward-backward asymmetry of the light meson in the pp̄ rest frame is measured. No significant CP asymmetry in B +→pp̄K+ decay is found in any region of the Dalitz plane. We present the first observation of the decay B +→Λ̄(1520)(→K+p̄)p near the K+p̄ threshold and measure B(B+→Λ̄ (1520)p)=(3.9-0.9+1.0(stat)±0.1(syst)±0.3(BF))×10 -7, where BF denotes the uncertainty on secondary branching fractions. © 2013 CERN. Published by the American Physical Society under the terms of the. |
| first_indexed | 2024-03-06T19:09:22Z |
| format | Journal article |
| id | oxford-uuid:163f931f-fcd9-48a1-b9db-f1ce939d1d3f |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:09:22Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | oxford-uuid:163f931f-fcd9-48a1-b9db-f1ce939d1d3f2022-03-26T10:30:15ZStudies of the decays B+ -> p(p)over-barph(+) and observation of B+ -> (Lambda)over-bar(1520)pJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:163f931f-fcd9-48a1-b9db-f1ce939d1d3fEnglishSymplectic Elements at Oxford2013Aaij, RAdeva, BAdinolfi, MAdrover, CAffolder, AAjaltouni, ZAlbrecht, JAlessio, FAlexander, MAli, SAlkhazov, GAlvarez Cartelle, PJr, AAmato, SAmerio, SAmhis, YAnderlini, LAnderson, JAndreassen, RAndrews, JAppleby, RGutierrez, OArchilli, FArtamonov, AArtuso, MDynamics and direct CP violation in three-body charmless decays of charged B mesons to a proton, an antiproton and a light meson (pion or kaon) are studied using data, corresponding to an integrated luminosity of 1.0 fb-1, collected by the LHCb experiment in pp collisions at a center-of-mass energy of 7 TeV. Production spectra are determined as a function of Dalitz-plot and helicity variables. The forward-backward asymmetry of the light meson in the pp̄ rest frame is measured. No significant CP asymmetry in B +→pp̄K+ decay is found in any region of the Dalitz plane. We present the first observation of the decay B +→Λ̄(1520)(→K+p̄)p near the K+p̄ threshold and measure B(B+→Λ̄ (1520)p)=(3.9-0.9+1.0(stat)±0.1(syst)±0.3(BF))×10 -7, where BF denotes the uncertainty on secondary branching fractions. © 2013 CERN. Published by the American Physical Society under the terms of the. |
| spellingShingle | Aaij, R Adeva, B Adinolfi, M Adrover, C Affolder, A Ajaltouni, Z Albrecht, J Alessio, F Alexander, M Ali, S Alkhazov, G Alvarez Cartelle, P Jr, A Amato, S Amerio, S Amhis, Y Anderlini, L Anderson, J Andreassen, R Andrews, J Appleby, R Gutierrez, O Archilli, F Artamonov, A Artuso, M Studies of the decays B+ -> p(p)over-barph(+) and observation of B+ -> (Lambda)over-bar(1520)p |
| title | Studies of the decays B+ -> p(p)over-barph(+) and observation of B+ -> (Lambda)over-bar(1520)p |
| title_full | Studies of the decays B+ -> p(p)over-barph(+) and observation of B+ -> (Lambda)over-bar(1520)p |
| title_fullStr | Studies of the decays B+ -> p(p)over-barph(+) and observation of B+ -> (Lambda)over-bar(1520)p |
| title_full_unstemmed | Studies of the decays B+ -> p(p)over-barph(+) and observation of B+ -> (Lambda)over-bar(1520)p |
| title_short | Studies of the decays B+ -> p(p)over-barph(+) and observation of B+ -> (Lambda)over-bar(1520)p |
| title_sort | studies of the decays b gt p p over barph and observation of b gt lambda over bar 1520 p |
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