Measurement of the top quark mass with the dynamical likelihood method using lepton plus jets events with b-tags in (p)over-barp collisions at √s=1.96 TeV

被引:27
作者
Abulencia, A. [1 ]
Acosta, D.
Adelman, J.
Affolder, T.
Akimoto, T.
Albrow, M. G.
Ambrose, D.
Amerio, S.
Amidei, D.
Anastassov, A.
Anikeev, K.
Annovi, A.
Antos, J.
Aoki, M.
Apollinari, G.
Arguin, J. -F.
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, V. E.
Barnett, B. A.
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, R. E.
Blocker, C.
Bloom, K.
机构
[1] Univ Illinois, Urbana, IL 61801 USA
[2] Acad Sinica, Inst Phys, Taipei 11529, Taiwan
[3] Argonne Natl Lab, Argonne, IL 60439 USA
[4] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain
[5] Baylor Univ, Waco, TX 76798 USA
[6] Univ Bologna, Ist Nazl Fis Nucl, I-40127 Bologna, Italy
[7] Brandeis Univ, Waltham, MA 02254 USA
[8] Univ Calif Davis, Davis, CA 95616 USA
[9] Univ Calif Los Angeles, Los Angeles, CA 90024 USA
[10] Univ Calif San Diego, La Jolla, CA 92093 USA
[11] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA
[12] Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain
[13] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA
[14] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA
[15] Joint Nucl Res Inst, 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] Johns Hopkins Univ, Baltimore, MD 21218 USA
[26] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany
[27] KEK, High Energy Accelerator Res Org, 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] Moscow Theoret & Expt Phys Inst, ITEP, 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 Paris 06, CNRS, IN2P3, LPNHE, F-75252 Paris 05, France
[48] Univ Penn, Philadelphia, PA 19104 USA
[49] Univ Pisa, Ist Nazl Fis Nucl Pisa, Siena, Italy
[50] Scuola Normale Super Pisa, I-56127 Pisa, Italy
来源
PHYSICAL REVIEW D | 2006年 / 73卷 / 09期
基金
英国科学技术设施理事会;
关键词
D O I
10.1103/PhysRevD.73.092002
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
This paper describes a measurement of the top quark mass, M-top, with the dynamical likelihood method (DLM) using the CDF II detector at the Fermilab Tevatron. The Tevatron produces top/antitop (t (t) over bar) pairs in p (p) over bar collisions at a center-of-mass energy of 1.96 TeV. The data sample used in this analysis was accumulated from March 2002 through August 2004, which corresponds to an integrated luminosity of 318 pb(-1). We use the t (t) over bar candidates in the "lepton+jets" decay channel, requiring at least one jet identified as a b quark by finding a displaced secondary vertex. The DLM defines a likelihood for each event based on the differential cross section as a function of M-top per unit phase space volume of the final partons, multiplied by the transfer functions from jet to parton energies. The method takes into account all possible jet combinations in an event, and the likelihood is multiplied event by event to derive the top quark mass by the maximum likelihood method. Using 63 t (t) over bar candidates observed in the data, with 9.2 events expected from background, we measure the top quark mass to be 173.2(-2.4)(+2.6)(stat.)+/- 3.2(syst.) GeV/c(2), or 173.2(-4.0)(+4.1) GeV/c(2).
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页数:26
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