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Measurements of branching fraction ratios and CP-asymmetries in suppressed B{sup -}{yields}D({yields}K{sup +}{pi}{sup -})K{sup -} and B{sup -}{yields}D({yields}K{sup +}{pi}{sup -}){pi}{sup -} decays

Journal Article · · Physical Review. D, Particles Fields
; ; ; ;  [1]; ; ; ; ; ; ; ; ; ; ;  [2]; ; ;  [3];  [4]
  1. Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki (Finland)
  2. Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander (Spain)
  3. Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova (Italy)
  4. University of Michigan, Ann Arbor, Michigan 48109 (United States)
+ Show Author Affiliations
We report the first reconstruction in hadron collisions of the suppressed decays B{sup -}{yields}D({yields}K{sup +}{pi}{sup -})K{sup -} and B{sup -}{yields}D({yields}K{sup +}{pi}{sup -}){pi}{sup -}, sensitive to the Cabibbo-Kobayashi-Maskawa phase {gamma}, using data from 7 fb{sup -1} of integrated luminosity collected by the CDF II detector at the Tevatron collider. We reconstruct a signal for the B{sup -}{yields}D({yields}K{sup +}{pi}{sup -})K{sup -} suppressed mode with a significance of 3.2 standard deviations, and measure the ratios of the suppressed to favored branching fractions R(K)=[22.0{+-}8.6(stat){+-}2.6(syst)]x10{sup -3}, R{sup +}(K)=[42.6{+-}13.7(stat){+-}2.8(syst)]x10{sup -3}, R{sup -}(K)=[3.8{+-}10.3(stat){+-}2.7(syst)]x10{sup -3} as well as the direct CP-violating asymmetry A(K)=-0.82{+-}0.44(stat){+-}0.09(syst) of this mode. Corresponding quantities for B{sup -}{yields}D({yields}K{sup +}{pi}{sup -}){pi}{sup -} decay are also reported.
OSTI ID:
21607988
Journal Information:
Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 84; ISSN PRVDAQ; ISSN 0556-2821
Country of Publication:
United States
Language:
English

Cited By (2)

Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016 journal December 2017
CP violation in the B system journal February 2017

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Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
ASYMMETRY
B MESONS
B MINUS MESONS
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
BRANCHING RATIO
COLLISIONS
CP INVARIANCE
CYCLIC ACCELERATORS
DECAY
DIMENSIONLESS NUMBERS
ELEMENTARY PARTICLES
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
HADRONS
INVARIANCE PRINCIPLES
KAONS
KAONS MINUS
KAONS PLUS
KOBAYASHI-MASKAWA MATRIX
LUMINOSITY
MATRICES
MEASURING INSTRUMENTS
MESONS
OPTICAL PROPERTIES
PARTICLE DECAY
PHYSICAL PROPERTIES
PIONS
PIONS MINUS
PSEUDOSCALAR MESONS
RADIATION DETECTORS
STRANGE MESONS
STRANGE PARTICLES
SYNCHROTRONS