Precision top-quark mass measurement in the lepton plus jets topology in p(p)over-bar collisions at √s=1.96 TeV -: art. no. 022004

被引:34
作者
Abulencia, A
Acosta, D
Adelman, J
Affolder, T
Akimoto, T
Albrow, MG
Ambrose, D
Amerio, S
Amidei, D
Anastassov, A
Anikeev, K
Annovi, A
Antos, J
Aoki, M
Apollinari, G
Arguin, JF
Arisawa, T
Artikov, A
Ashmanskas, W
Attal, A
Azfar, F
Azzi-Bacchetta, P
Azzurri, P
Bacchetta, N
Bachacou, H
Badgett, W
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Baroiant, S
Bartsch, V
Bauer, G
Bedeschi, F
Behari, S
Belforte, S
Bellettini, G
Bellinger, J
Belloni, A
Ben-Haim, E
Benjamin, D
Beretvas, A
Beringer, J
Berry, T
Bhatti, A
Binkley, M
Bisello, D
Bishai, M
Blair, RE
Blocker, C
Bloom, K
机构
[1] Acad Sinica, Inst Phys, Taipei 11529, Taiwan
[2] Argonne Natl Lab, Argonne, IL 60439 USA
[3] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Bellaterra, Barcelona, Spain
[4] Baylor Univ, Waco, TX 76798 USA
[5] Univ Bologna, Ist Nazl Fis Nucl, I-40127 Bologna, Italy
[6] Brandeis Univ, Waltham, MA 02254 USA
[7] Univ Calif Davis, Davis, CA 95616 USA
[8] Univ Calif Los Angeles, Los Angeles, CA 90024 USA
[9] Univ Calif San Diego, La Jolla, CA 92093 USA
[10] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA
[11] Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain
[12] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA
[13] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA
[14] Joint Inst Nucl Res, RU-141980 Dubna, Russia
[15] Duke Univ, Durham, NC 27708 USA
[16] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
[17] Univ Florida, Gainesville, FL 32611 USA
[18] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
[19] Univ Geneva, CH-1211 Geneva 4, Switzerland
[20] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland
[21] Harvard Univ, Cambridge, MA 02138 USA
[22] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland
[23] Helsinki Inst Phys, FIN-00014 Helsinki, Finland
[24] Univ Illinois, Urbana, IL 61801 USA
[25] Johns Hopkins Univ, Baltimore, MD 21218 USA
[26] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany
[27] High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 305, Japan
[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] 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] MIT, Cambridge, MA 02139 USA
[35] McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada
[36] Univ Toronto, Toronto, ON M5S 1A7, Canada
[37] Univ Michigan, Ann Arbor, MI 48109 USA
[38] Michigan State Univ, E Lansing, MI 48824 USA
[39] Inst Theoret & Expt Phys, Moscow 117259, Russia
[40] Univ New Mexico, Albuquerque, NM 87131 USA
[41] Northwestern Univ, Evanston, IL 60208 USA
[42] Ohio State Univ, Columbus, OH 43210 USA
[43] Okayama Univ, Okayama 7008530, Japan
[44] Osaka City Univ, Osaka 588, Japan
[45] Univ Oxford, Oxford OX1 3RH, England
[46] Univ Padua, Ist Nazl Fis Nucl, Sez Padova Trento, I-35131 Padua, Italy
[47] Univ Penn, Philadelphia, PA 19104 USA
[48] Univ Pisa, Ist Nazl Fis Nucl, Siena, Italy
[49] Scuola Normale Super Pisa, I-56127 Pisa, Italy
[50] Univ Pittsburgh, Pittsburgh, PA 15260 USA
基金
英国科学技术设施理事会;
关键词
D O I
10.1103/PhysRevLett.96.022004
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We report two measurements of the top-quark mass M-top using the CDF II detector at the Fermilab Tevatron in a 318 pb(-1) data sample of t (t) over bar events in the lepton+jets final state. One method uses an event-based likelihood technique resulting in M-top=173.2(-2.4)(+2.6)(stat)+/- 3.2(syst) GeV/c(2) or 173.2(-4.0)(+4.1) GeV/c(2). The second method reconstructs a top-quark mass in each event using the measured invariant mass of the hadronically decaying W boson to constrain the jet energy scale to obtain a value for M-top of 173.5(-3.6)(+3.7)(stat)+/- 1.3(syst) GeV/c(2) or 173.5(-3.8)(+3.9) GeV/c(2). We take the latter, which is more precise, as our result.
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