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Title: | Measurement of the B± production asymmetry and the C P asymmetry in B±→J /ψ K± decays |
Author: | Camboni, Alessandro Coquereau, Samuel Garrido Beltrán, Lluís Gascón Fora, David Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José Alfonso Albero, Alejandro Calvo Gomez, M. Gironella Gironell, Pere Vazquez Gomez, R. LHCb Collaboration |
Keywords: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
Issue Date: | Mar-2017 |
Publisher: | American Physical Society |
Abstract: | The B± meson production asymmetry in p p collisions is measured using B+→D¯ 0 π+ decays. The data were recorded by the LHCb experiment during Run 1 of the LHC at center-of-mass energies of √{s }=7 and 8 TeV. The production asymmetries, integrated over transverse momenta in the range 2 <pT<30 GeV /c , and rapidities in the range 2.1 <y <4.5 are measured to be Aprod(B+,√{s }=7 TeV )=(-0.41 ±0.49 ±0.10 )×10-2 , Aprod(B+,√{s }=8 TeV )=(-0.53 ±0.31 ±0.10 )×10-2 , where the first uncertainties are statistical and the second are systematic. These production asymmetries are used to correct the raw asymmetries of B+→J /ψ K+ decays, thus allowing a measurement of the C P asymmetry, AC P(B+→J /ψ K+) =(0.09 ±0.27 ±0.07 ) ×10-2 . |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.95.052005 |
It is part of: | Physical Review D, 2017, vol. 95, num. 052005, p. 1-13 |
URI: | http://hdl.handle.net/2445/186403 |
Related resource: | https://doi.org/10.1103/PhysRevD.95.052005 |
ISSN: | 2470-0010 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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