Study of $B^{\pm} \to J/\psi \pi^+/-$ and $B^{\pm} \to J/\psi K^{\pm}$ decays: measurement of the ratio of branching fractions and search for direct CP violation
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- Function : Author
M. Cristinziani
- Function : Author
D. Dong
- Function : Author
J. Dorfan
- Function : Author
D. Dujmic
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W M. Dunwoodie
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E E. Elsen
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R C. Field
- Function : Author
T. Glanzman
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S J. Gowdy
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T. Hadig
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V. Halyo
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T. Hrynova
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- PersonId : 178920
- IdHAL : thrynova
- ORCID : 0000-0001-5914-8614
- IdRef : 253167418
W R. Innes
- Function : Author
M H. Kelsey
- Function : Author
P. Kim
- Function : Author
M L. Kocian
- Function : Author
D W G S. Leith
- Function : Author
J. Libby
- Function : Author
S. Luitz
- Function : Author
V. Lueth
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H L. Lynch
- Function : Author
H. Marsiske
- Function : Author
R. Messner
- Function : Author
D R. Mueller
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C P. O'Grady
- Function : Author
V E. Ozcan
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A. Perazzo
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M. Perl
- Function : Author
S. Petrak
- Function : Author
B N. Ratcliff
- Function : Author
A. Roodman
- Function : Author
a A. Salnikov
- Function : Author
R H. Schindler
- Function : Author
J. Schwiening
- Function : Author
G. Simi
- Function : Author
A. Snyder
- Function : Author
A. Soha
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J. Stelzer
- Function : Author
D. Su
- Function : Author
M K. Sullivan
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J. Vavra
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S R. Wagner
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M. Weaver
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a J R. Weinstein
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W J. Wisniewski
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D H. Wright
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C C. Young
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P R. Burchat
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a J. Edwards
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T I. Meyer
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B A. Petersen
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C. Roat
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M. Ahmed
- Function : Author
- PersonId : 755455
- ORCID : 0000-0003-1616-1899
Mohamed-Salem Ahmed
- Function : Author
- PersonId : 829322
M S. Alam
- Function : Author
J A. Ernst
- Function : Author
M A. Saeed
- Function : Author
M. Saleem
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F R. Wappler
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W. Bugg
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M. Krishnamurthy
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S M. Spanier
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R. Eckmann
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H. Kim
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J L. Ritchie
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A. Satpathy
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R F. Schwitters
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J M. Izen
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I. Kitayama
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X C. Lou
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S. Ye
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F. Bianchi
- Function : Author
M. Bona
- Function : Author
F. Gallo
- Function : Author
D. Gamba
- Function : Author
C. Borean
- Function : Author
L. Bosisio
- Function : Author
F. Cossutti
- Function : Author
G. Della Ricca
- Function : Author
S. Dittongo
- Function : Author
S. Grancagnolo
- Function : Author
L. Lanceri
- Function : Author
P. Poropat
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L. Vitale
- Function : Author
G. Vuagnin
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R S. Panvini
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Sw. Banerjee
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C M. Brown
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D. Fortin
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P D. Jackson
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R. Kowalewski
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J M. Roney
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H R. Band
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S. Dasu
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M. Datta
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a M. Eichenbaum
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J R. Johnson
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P E. Kutter
- Function : Author
H. Li
- Function : Author
R. Liu
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F. Di Lodovico
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A. Mihalyi
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a K. Mohapatra
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Y. Pan
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R. Prepost
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S J. Sekula
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J H. von Wimmersperg-Toeller
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J. Wu
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Lan. Wu Sau
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Z. Yu
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H. Neal
- Function : Author
Abstract
We study B^+/- --> J/psi pi^+/- and B^+/- --> J/psi K^+/- decays in a sample of about 89 million BB~ pairs collected with the BABAR detector at the PEP-II asymmetric B-factory at SLAC. We observe a signal of 244 +/- 20 B^+/- --> J/psi pi^+/- events and determine the ratio BF(B^+/- --> J/psi pi^+/-)/BF(B^+/- --> J/psi K^+/-) to be [5.37 +/- 0.45 (stat.) +/- 0.11 (syst)]%. The charge asymmetries for the B^+/- --> J/psi pi^+/- and B^+/- --> J/psi K^+/- decays are determined to be A_pi = 0.123 +/- 0.085 (stat.) +/- 0.004 (syst.) and A_K = 0.030 +/- 0.015 (stat.) +/- 0.006 (syst.), respectively.