Direct Measurement of the Total Decay Width of the Top Quark

被引：23

作者：

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

Amerio, S. ^{[48
,49
]}

Amidei, D. ^{[40
]}

Anastassov, A. ^{[17
]}

Annovi, A. ^{[19
]}

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

Apollinari, G. ^{[17
]}

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

Arisawa, T. ^{[71
]}

Artikov, A. ^{[15
]}

Asaadi, J. ^{[63
]}

Ashmanskas, W. ^{[17
]}

Auerbach, B. ^{[12
]}

Aurisano, A. ^{[63
]}

Azfar, F. ^{[47
]}

Badgett, W. ^{[17
]}

Bae, T. ^{[28
,29
,30
,31
,32
,33
,34
]}

Barbaro-Galtieri, A. ^{[35
]}

Barnes, V. E. ^{[58
]}

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

Barria, P. ^{[51
,53
]}

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

Bauce, M. ^{[48
,49
]}

Bedeschi, F. ^{[51
]}

Behari, S. ^{[17
]}

Bellettini, G. ^{[51
,52
]}

Bellinger, J. ^{[73
]}

Benjamin, D. ^{[16
]}

Beretvas, A. ^{[17
]}

Bhatti, A. ^{[60
]}

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

Blumenfeld, B. ^{[26
]}

Bocci, A. ^{[16
]}

Bodek, A. ^{[59
]}

Bortoletto, D. ^{[58
]}

Boudreau, J. ^{[57
]}

Boveia, A. ^{[12
]}

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

Bromberg, C. ^{[41
]}

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

Budagov, J. ^{[15
]}

Budd, H. S. ^{[59
]}

Burkett, K. ^{[17
]}

Busetto, G. ^{[48
,49
]}

Bussey, P. ^{[21
]}

Butti, P. ^{[51
,52
]}

Buzatu, A. ^{[21
]}

Calamba, A. ^{[11
]}

Camarda, S. ^{[4
]}

Campanelli, M. ^{[37
]}

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 Barcelona, Barcelona, Spain

[5] Baylor Univ, Waco, TX 76798 USA

[6] Ist Nazl Fis Nucl Bologna, 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, Inst Fis Cantabria, CSIC, E-39005 Santander, 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, Div High Energy Phys, Dept 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, Taegu 702701, South Korea

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

[30] Sungkyunkwan Univ, Suwon 440746, South Korea

[31] Korea Inst Sci & Technol Informat, Taejon 305806, South Korea

[32] Chonnam Natl Univ, Kwangju 500757, South Korea

[33] Chonbuk Natl Univ, Jeonju 561756, South Korea

[34] Ewha Womans Univ, Seoul 120750, South Korea

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

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

[37] UCL, London WC1E 6BT, England

[38] Ctr Invest Energet Medioambientales & Tecnol, E-28040 Madrid, Spain

[39] MIT, Cambridge, MA 02139 USA

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

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

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

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

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

[45] Okayama Univ, Okayama 7008530, Japan

[46] Osaka City Univ, Osaka 5588585, Japan

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

[48] Ist Nazl Fis Nucl, I-35131 Padua, Italy

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

[50] Univ Penn, Philadelphia, PA 19104 USA

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 20期

基金：

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

关键词：

D O I：

10.1103/PhysRevLett.111.202001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a measurement of the total decay width of the top quark using events with top-antitop quark pair candidates reconstructed in the final state with one charged lepton and four or more hadronic jets. We use the full Tevatron run II data set of root s = 1.96 TeV proton-antiproton collisions recorded by the CDF II detector. The top quark mass and the mass of the hadronically decaying W boson are reconstructed for each event and compared with distributions derived from simulated signal and background samples to extract the top quark width (Gamma(top)) and the energy scale of the calorimeter jets with in situ calibration. For a top quark mass M-top = 172.5 GeV/c(2), we find 1.10 < Gamma(top) < 4.05 GeV at 68% confidence level, which is in agreement with the standard model expectation of 1.3 GeV and is the most precise direct measurement of the top quark width to date.

引用

页数：8

共 43 条

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