Measurement of B (t →wb) /B (t →wq) in top-quark-pair decays using dilepton events and the full CDF run II data set

CDF Collaboration

doi:10.1103/PhysRevLett.112.221801

Measurement of B (t →wb) /B (t →wq) in top-quark-pair decays using dilepton events and the full CDF run II data set

CDF Collaboration

Department of Physics

University of Helsinki
National Institute for Nuclear Physics
University of Padua
University of Michigan, Ann Arbor
Fermi National Accelerator Laboratory
Northwestern University
Comenius University
Slovak Academy of Sciences
Waseda University
Joint Institute for Nuclear Research
Texas A&M University
Argonne National Laboratory
University of Oxford
Kyungpook National University
Seoul National University
Sungkyunkwan University
Korea Institute of Science and Technology Information
Chonnam National University
Jeonbuk National University
Ewha Womans University
Lawrence Berkeley National Laboratory
Purdue University
Johns Hopkins University
University of Siena
University of Pisa
University of Wisconsin-Madison
Duke University
Rockefeller University
Baylor University
University of Rochester
University of Pittsburgh
The University of Chicago
University of Bologna
Michigan State University
University of Glasgow
Carnegie Mellon University
Autonomous University of Barcelona

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18 Scopus citations

Abstract

We present a measurement of the ratio of the top-quark branching fractions R=B(t→Wb)/B(t→Wq), where q represents any quark flavor, in events with two charged leptons, imbalance in total transverse energy, and at least two jets. The measurement uses proton-antiproton collision data at center-of-mass energy 1.96 TeV, corresponding to an integrated luminosity of 8.7fb-1 collected with the Collider Detector at Fermilab during Run II of the Tevatron. We measure R to be 0.87±0.07, and extract the magnitude of the top-bottom quark coupling to be |Vtb|=0.93±0.04, assuming three generations of quarks. Under these assumptions, a lower limit of |Vtb|>0.85(0.87) at 95% (90%) credibility level is set.

Original language	English
Article number	221801
Journal	Physical Review Letters
Volume	112
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.112.221801
State	Published - 2 Jun 2014

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10.1103/PhysRevLett.112.221801

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@article{cca92d5b120c4a5080a3d8adc54dbdd3,

title = "Measurement of B (t →wb) /B (t →wq) in top-quark-pair decays using dilepton events and the full CDF run II data set",

abstract = "We present a measurement of the ratio of the top-quark branching fractions R=B(t→Wb)/B(t→Wq), where q represents any quark flavor, in events with two charged leptons, imbalance in total transverse energy, and at least two jets. The measurement uses proton-antiproton collision data at center-of-mass energy 1.96 TeV, corresponding to an integrated luminosity of 8.7fb-1 collected with the Collider Detector at Fermilab during Run II of the Tevatron. We measure R to be 0.87±0.07, and extract the magnitude of the top-bottom quark coupling to be |Vtb|=0.93±0.04, assuming three generations of quarks. Under these assumptions, a lower limit of |Vtb|>0.85(0.87) at 95\% (90\%) credibility level is set.",

author = "\{CDF Collaboration\} and T. Aaltonen and S. Amerio and D. Amidei and A. Anastassov and A. Annovi and J. Antos and G. Apollinari and Appel, \{J. A.\} and T. Arisawa and A. Artikov and J. Asaadi and W. Ashmanskas and B. Auerbach and A. Aurisano and F. Azfar and W. Badgett and T. Bae and A. Barbaro-Galtieri and Barnes, \{V. E.\} and Barnett, \{B. A.\} and P. Barria and P. Bartos and M. Bauce and F. Bedeschi and S. Behari and G. Bellettini and J. Bellinger and D. Benjamin and A. Beretvas and A. Bhatti and Bland, \{K. R.\} and B. Blumenfeld and A. Bocci and A. Bodek and D. Bortoletto and J. Boudreau and A. Boveia and L. Brigliadori and C. Bromberg and E. Brucken and J. Budagov and Budd, \{H. S.\} and K. Burkett and G. Busetto and P. Bussey and P. Butti and A. Buzatu and A. Calamba and S. Camarda and Lee, \{J. S.\}",

year = "2014",

month = jun,

day = "2",

doi = "10.1103/PhysRevLett.112.221801",

language = "English",

volume = "112",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "22",

}

TY - JOUR

T1 - Measurement of B (t →wb) /B (t →wq) in top-quark-pair decays using dilepton events and the full CDF run II data set

AU - CDF Collaboration

AU - Aaltonen, T.

AU - Amerio, S.

AU - Amidei, D.

AU - Anastassov, A.

AU - Annovi, A.

AU - Antos, J.

AU - Apollinari, G.

AU - Appel, J. A.

AU - Arisawa, T.

AU - Artikov, A.

AU - Asaadi, J.

AU - Ashmanskas, W.

AU - Auerbach, B.

AU - Aurisano, A.

AU - Azfar, F.

AU - Badgett, W.

AU - Bae, T.

AU - Barbaro-Galtieri, A.

AU - Barnes, V. E.

AU - Barnett, B. A.

AU - Barria, P.

AU - Bartos, P.

AU - Bauce, M.

AU - Bedeschi, F.

AU - Behari, S.

AU - Bellettini, G.

AU - Bellinger, J.

AU - Benjamin, D.

AU - Beretvas, A.

AU - Bhatti, A.

AU - Bland, K. R.

AU - Blumenfeld, B.

AU - Bocci, A.

AU - Bodek, A.

AU - Bortoletto, D.

AU - Boudreau, J.

AU - Boveia, A.

AU - Brigliadori, L.

AU - Bromberg, C.

AU - Brucken, E.

AU - Budagov, J.

AU - Budd, H. S.

AU - Burkett, K.

AU - Busetto, G.

AU - Bussey, P.

AU - Butti, P.

AU - Buzatu, A.

AU - Calamba, A.

AU - Camarda, S.

AU - Lee, J. S.

PY - 2014/6/2

Y1 - 2014/6/2

N2 - We present a measurement of the ratio of the top-quark branching fractions R=B(t→Wb)/B(t→Wq), where q represents any quark flavor, in events with two charged leptons, imbalance in total transverse energy, and at least two jets. The measurement uses proton-antiproton collision data at center-of-mass energy 1.96 TeV, corresponding to an integrated luminosity of 8.7fb-1 collected with the Collider Detector at Fermilab during Run II of the Tevatron. We measure R to be 0.87±0.07, and extract the magnitude of the top-bottom quark coupling to be |Vtb|=0.93±0.04, assuming three generations of quarks. Under these assumptions, a lower limit of |Vtb|>0.85(0.87) at 95% (90%) credibility level is set.

AB - We present a measurement of the ratio of the top-quark branching fractions R=B(t→Wb)/B(t→Wq), where q represents any quark flavor, in events with two charged leptons, imbalance in total transverse energy, and at least two jets. The measurement uses proton-antiproton collision data at center-of-mass energy 1.96 TeV, corresponding to an integrated luminosity of 8.7fb-1 collected with the Collider Detector at Fermilab during Run II of the Tevatron. We measure R to be 0.87±0.07, and extract the magnitude of the top-bottom quark coupling to be |Vtb|=0.93±0.04, assuming three generations of quarks. Under these assumptions, a lower limit of |Vtb|>0.85(0.87) at 95% (90%) credibility level is set.

UR - https://www.scopus.com/pages/publications/84901919886

U2 - 10.1103/PhysRevLett.112.221801

DO - 10.1103/PhysRevLett.112.221801

M3 - Article

AN - SCOPUS:84901919886

SN - 0031-9007

VL - 112

JO - Physical Review Letters

JF - Physical Review Letters

IS - 22

M1 - 221801

ER -

Measurement of B (t →wb) /B (t →wq) in top-quark-pair decays using dilepton events and the full CDF run II data set

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