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Measurements of the branching fractions and CP asymmetries of B^{±}→J/ψπ^{±} and B^{±}→ψ(2S)π^{±} decays

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Aaij, R., Abellan Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M. et al.
. (2012) Measurements of the branching fractions and CP asymmetries of B^{±}→J/ψπ^{±} and B^{±}→ψ(2S)π^{±} decays. Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.85 (No.9). Article no. 091105. ISSN 1550-7998

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Abstract

A study of B ±→J/ψπ ± and B ±→ψ(2S)π ± decays is performed with data corresponding to 0.37fb -1 of proton-proton collisions at √s=7TeV. Their branching fractions are found to be B(B ±→J/ψπ ±)=(3.88±0. 11±0.15)×10 -5andB(B ±→ψ(2S) π ±)=(2.52±0.26±0.15)×10 -5,where the first uncertainty is related to the statistical size of the sample and the second quantifies systematic effects. The measured CP asymmetries in these modes are ACPJ/ψπ=0.005±0.027±0. 011andACPψ(2S)π=0.048±0.090±0.011 with no evidence of direct CP violation seen. © 2012 CERN.

Item Type: Journal Article
Divisions: Faculty of Science > Physics
Journal or Publication Title: Physical Review D (Particles, Fields, Gravitation and Cosmology)
Publisher: American Physical Society
ISSN: 1550-7998
Date: 2012
Volume: Vol.85
Number: No.9
Page Range: Article no. 091105
Identification Number: 10.1103/PhysRevD.85.091105
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
URI: http://wrap.warwick.ac.uk/id/eprint/49525

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