Study of top quark production and decays involving a tau lepton at CDF and limits on a charged Higgs boson contribution

被引：10

作者：

Aaltonen, T. ^{[23
,24
]}

Amerio, S. ^{[44
,45
]}

Amidei, D. ^{[36
]}

Anastassov, A. ^{[17
,91
]}

Annovi, A. ^{[19
]}

Antos, J. ^{[13
,14
]}

Apollinari, G. ^{[17
]}

Appel, J. A. ^{[17
]}

Arisawa, T. ^{[67
]}

Artikov, A. ^{[15
]}

Asaadi, J. ^{[59
]}

Ashmanskas, W. ^{[17
]}

Auerbach, B. ^{[2
]}

Aurisano, A. ^{[59
]}

Azfar, F. ^{[43
]}

Badgett, W. ^{[17
]}

Bae, T. ^{[28
,29
,30
]}

Barbaro-Galtieri, A. ^{[31
]}

Barnes, V. E. ^{[54
]}

Barnett, B. A. ^{[26
]}

Barria, P. ^{[47
,49
]}

Bartos, P. ^{[13
,14
]}

Bauce, M. ^{[44
,45
]}

Bedeschi, F. ^{[47
]}

Behari, S. ^{[17
]}

Bellettini, G. ^{[47
,48
]}

Bellinger, J. ^{[69
]}

Benjamin, D. ^{[16
]}

Beretvas, A. ^{[17
]}

Bhatti, A. ^{[56
]}

Bland, K. R. ^{[5
]}

Blumenfeld, B. ^{[26
]}

Bocci, A. ^{[16
]}

Bodek, A. ^{[55
]}

Bortoletto, D. ^{[54
]}

Boudreau, J. ^{[53
]}

Boveia, A. ^{[12
]}

Brigliadori, L. ^{[6
,7
]}

Bromberg, C. ^{[37
]}

Brucken, E. ^{[23
,24
]}

Budagov, J. ^{[15
]}

Budd, H. S. ^{[55
]}

Burkett, K. ^{[17
]}

Busetto, G. ^{[44
,45
]}

Bussey, P. ^{[21
]}

Butti, P. ^{[47
,48
]}

Buzatu, A. ^{[21
]}

Calamba, A. ^{[11
]}

Camarda, S. ^{[4
]}

Campanelli, M. ^{[33
]}

机构：

[1] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[2] Argonne Natl Lab, Argonne, IL 60439 USA

[3] Univ Athens, GR-15771 Athens, Greece

[4] Univ Autonoma Barcelona, ICREA, Inst Fis Altes Energies, E-08193 Bellaterra, Barcelona, Spain

[5] Baylor Univ, Waco, TX 76798 USA

[6] Ist Nazl Fis Nucl, I-40127 Bologna, Italy

[7] Univ Bologna, I-40127 Bologna, Italy

[8] Univ Calif Davis, Davis, CA 95616 USA

[9] Univ Calif Los Angeles, Los Angeles, CA 90024 USA

[10] Univ Cantabria, CSIC, Inst Fis Cantabria, Santander 39005, Spain

[11] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[12] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[13] Comenius Univ, Bratislava 84248, Slovakia

[14] Inst Expt Phys, Kosice 04001, Slovakia

[15] Joint Inst Nucl Res, RU-141980 Dubna, Russia

[16] Duke Univ, Durham, NC 27708 USA

[17] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[18] Univ Florida, Gainesville, FL 32611 USA

[19] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[20] Univ Geneva, CH-1211 Geneva 4, Switzerland

[21] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland

[22] Harvard Univ, Cambridge, MA 02138 USA

[23] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland

[24] Helsinki Inst Phys, FIN-00014 Helsinki, Finland

[25] Univ Illinois, Urbana, IL 61801 USA

[26] Johns Hopkins Univ, Baltimore, MD 21218 USA

[27] Karlsruhe Inst Technol, Inst Expt Kernphys, D-76131 Karlsruhe, Germany

[28] Kyungpook Natl Univ, Ctr High Energy Phys, Daegu 702701, South Korea

[29] Seoul Natl Univ, Seoul 151742, South Korea

[30] Sungkyunkwan Univ, Suwon 440746, South Korea

[31] Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[32] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England

[33] UCL, London WC1E 6BT, England

[34] Ctr Invest Energet Medioambient & Tecnol, E-28040 Madrid, Spain

[35] MIT, Cambridge, MA 02139 USA

[36] Univ Michigan, Ann Arbor, MI 48109 USA

[37] Michigan State Univ, E Lansing, MI 48824 USA

[38] Inst Theoret & Expt Phys, Moscow 117259, Russia

[39] Univ New Mexico, Albuquerque, NM 87131 USA

[40] Ohio State Univ, Columbus, OH 43210 USA

[41] Okayama Univ, Okayama 7008530, Japan

[42] Osaka City Univ, Osaka 5588585, Japan

[43] Univ Oxford, Oxford OX1 3RH, England

[44] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy

[45] Univ Padua, I-35131 Padua, Italy

[46] Univ Penn, Philadelphia, PA 19104 USA

[47] Ist Nazl Fis Nucl, I-56127 Pisa, Italy

[48] Univ Pisa, I-56127 Pisa, Italy

[49] Univ Siena, I-56127 Pisa, Italy

[50] Scuola Normale Super Pisa, I-56127 Pisa, Italy

来源：

PHYSICAL REVIEW D | 2014年 / 89卷 / 09期

基金：

芬兰科学院; 瑞士国家科学基金会; 新加坡国家研究基金会; 英国科学技术设施理事会; 澳大利亚研究理事会; 加拿大自然科学与工程研究理事会; 美国国家科学基金会; 俄罗斯基础研究基金会;

关键词：

D O I：

10.1103/PhysRevD.89.091101

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present an analysis of top-antitop quark production and decay into a tau lepton, tau neutrino, and bottom quark using data from 9 fb(-1) of integrated luminosity at the Collider Detector at Fermilab. Dilepton events, where one lepton is an energetic electron or muon and the other a hadronically decaying tau lepton, originating from proton-antiproton collisions at root s = 1.96 TeV, are used. A top-antitop quark production cross section of 8.1 +/- 2.1 pb is measured, assuming standard-model top quark decays. By separately identifying for the first time the single-tau and the ditau components, we measure the branching fraction of

引用

页数：9

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