Precision Measurement of the Ratio B(t{yields}Wb)/B(t{yields}Wq) and Extraction of V{sub tb}

Journal Article · Fri Sep 16 00:00:00 EDT 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.107.121802· OSTI ID:21611775

Abazov, V M; Alexeev, G D; Golovanov, G; Kharzheev, Y N; Malyshev, V L; Tokmenin, V V; Vertogradov, L S; Yatsunenko, Y A ^[1]; Abbott, B; Gutierrez, P; Jayasinghe, A; Severini, H; Skubic, P; Strauss, M; Svoisky, P ^[2]; Acharya, B S; Banerjee, S; Mondal, N K ^[3]; Adams, M; Bazterra, V ^[4]

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1. Joint Institute for Nuclear Research, Dubna (Russian Federation)
2. University of Oklahoma, Norman, Oklahoma 73019 (United States)
3. Tata Institute of Fundamental Research, Mumbai (India)
4. University of Illinois at Chicago, Chicago, Illinois 60607 (United States)

We present a measurement of the ratio of top quark branching fractions R=B(t{yields}Wb)/B(t{yields}Wq), where q can be a d, s, or b quark, in the lepton+jets and dilepton tt final states. The measurement uses data from 5.4 fb{sup -1} of pp collisions collected with the D0 detector at the Fermilab Tevatron Collider. We measure R=0.90{+-}0.04, and we extract the Cabibbo-Kobayashi-Maskawa (CKM) matrix element |V{sub tb}| as |V{sub tb}|=0.95{+-}0.02, assuming unitarity of the 3x3 CKM matrix.

• OSTI ID: 21611775
• Journal Information: Physical Review Letters, Vol. 107, Issue 12; Other Information: DOI: 10.1103/PhysRevLett.107.121802; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCURACY
B QUARKS
BRANCHING RATIO
FERMILAB TEVATRON
KOBAYASHI-MASKAWA MATRIX
LEPTONS
PROTON-PROTON INTERACTIONS
T QUARKS
UNITARITY
ACCELERATORS
BARYON-BARYON INTERACTIONS
BEAUTY PARTICLES
CYCLIC ACCELERATORS
DIMENSIONLESS NUMBERS
ELEMENTARY PARTICLES
FERMIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
MATRICES
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
POSTULATED PARTICLES
PROTON-NUCLEON INTERACTIONS
QUARKS
SYNCHROTRONS
TOP PARTICLES