Limits on the production of narrow t(t)over-bar resonances in p(p)over-bar collisions at √s=1.96 TeV

被引：39

作者：

Aaltonen, T. ^{[1
,6
]}

Adelman, J. ^{[15
]}

Akimoto, T. ^{[61
]}

Albrow, M. G. ^{[20
]}

Gonzalez, B. Alvarez ^{[13
]}

Amerio, S. ^{[49
]}

Amidei, D. ^{[41
]}

Anastassov, A. ^{[58
]}

Annovi, A. ^{[22
]}

Antos, J. ^{[16
,17
]}

Aoki, M. ^{[26
]}

Apollinari, G. ^{[20
]}

Apresyan, A. ^{[54
]}

Arisawa, T. ^{[63
]}

Artikov, A. ^{[18
]}

Ashmanskas, W. ^{[20
]}

Attal, A. ^{[4
]}

Aurisano, A. ^{[59
]}

Azfar, F. ^{[48
]}

Azzi-Bacchetta, P. ^{[49
]}

Azzurri, P. ^{[52
]}

Bacchetta, N. ^{[49
]}

Badgett, W. ^{[20
]}

Barbaro-Galtieri, A. ^{[34
]}

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

Barnett, B. A. ^{[27
]}

Baroiant, S. ^{[9
]}

Bartsch, V. ^{[36
]}

Bauer, G. ^{[38
]}

Beauchemin, P. -H. ^{[39
,40
]}

Bedeschi, F. ^{[52
]}

Bednar, P. ^{[16
,17
]}

Behari, S. ^{[27
]}

Bellettini, G. ^{[52
]}

Bellinger, J. ^{[65
]}

Belloni, A. ^{[25
]}

Benjamin, D. ^{[19
]}

Beretvas, A. ^{[20
]}

Beringer, J. ^{[34
]}

Berry, T. ^{[35
]}

Bhatti, A. ^{[56
]}

Binkley, M. ^{[20
]}

Bisello, D. ^{[49
]}

Bizjak, I. ^{[36
]}

Blair, R. E. ^{[3
]}

Blocker, C. ^{[8
]}

Blumenfeld, B. ^{[27
]}

Bocci, A. ^{[19
]}

Bodek, A. ^{[55
]}

Boisvert, V. ^{[55
]}

机构：

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

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

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

[8] Brandeis Univ, Waltham, MA 02254 USA

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

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

[11] Univ Calif San Diego, La Jolla, CA 92093 USA

[12] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA

[13] Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain

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

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

[16] Comenius Univ, Bratislava 84248, Slovakia

[17] Inst Expt Phys, Kosice 04001, Slovakia

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

[19] Duke Univ, Durham, NC 27708 USA

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

[21] Univ Florida, Gainesville, FL 32611 USA

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

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

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

[25] Harvard Univ, Cambridge, MA 02138 USA

[26] Univ Illinois, Urbana, IL 61801 USA

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

[28] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany

[29] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea

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

[31] Sungkyunkwan Univ, Suwon 440746, South Korea

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

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

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

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

[36] UCL, London WC1E 6BT, England

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

[38] MIT, Cambridge, MA 02139 USA

[39] McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada

[40] Univ Toronto, Toronto, ON M5S 1A7, Canada

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

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

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

[44] Northwestern Univ, Evanston, IL 60208 USA

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

[46] Okayama Univ, Okayama 7008530, Japan

[47] Osaka City Univ, Osaka 588, Japan

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

[49] Univ Padua, Ist Nazl Fis Nucl, Sezione Padova Trento, I-35131 Padua, Italy

[50] Univ Paris 06, CNRS, IN2P3, LPNHE, F-75252 Paris, France

来源：

PHYSICAL REVIEW D | 2008年 / 77卷 / 05期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevD.77.051102

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We search for evidence of resonant top quark pair production in 955 pb(-1) of p (p) over bar collisions at root s = 1: 96 TeV recorded with the CDF II detector at the Fermilab Tevatron. For fully reconstructed candidate t (t) over bar events triggered on leptons with large transverse momentum and containing at least one identified b-quark jet, we compare the invariant mass spectrum of t (t) over bar pairs to the expected superposition of standard model t (t) over bar, non-t (t) over bar backgrounds, and a simple resonance model based on a sequential Z' boson. We establish upper limits for sigma(p (p) over bar -> Z')center dot Br(Z' -> t (t) over bar) in the Z' mass interval from 450 GeV/c(2) to 900 GeV=c(2). A topcolor leptophobic Z' is ruled out below 720 GeV=c(2), and the cross section of any narrow Z'-like state decaying to t (t) over bar is found to be less than 0.64 pb at 95% C. L. for M-Z' above 700 GeV/c(2).

引用

页数：7

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