First Measurement of the t(t) over bar Differential Cross Section dσ/dMt(t) over bar in p(p) over bar Collisions at √s=1.96 TeV

被引：116

作者：

Aaltonen, T. ^{[1
]}

Adelman, J. ^{[15
]}

Akimoto, T. ^{[57
]}

Alvarez Gonzalez, B. ^{[13
]}

Amerio, S. ^{[45
,71
]}

Amidei, D. ^{[36
]}

Anastassov, A. ^{[40
]}

Annovi, A. ^{[21
]}

Antos, J. ^{[16
,63
]}

Apollinari, G. ^{[19
]}

Apresyan, A. ^{[50
]}

Arisawa, T. ^{[59
]}

Artikov, A. ^{[17
]}

Ashmanskas, W. ^{[19
]}

Attal, A. ^{[4
]}

Aurisano, A. ^{[55
]}

Azfar, F. ^{[44
]}

Azzurri, P. ^{[48
,72
]}

Badgett, W. ^{[19
]}

Barbaro-Galtieri, A. ^{[30
]}

Barnes, V. E. ^{[50
]}

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

Bartsch, V. ^{[32
]}

Bauer, G. ^{[34
]}

Beauchemin, P. -H. ^{[35
,68
,69
,70
]}

Bedeschi, F. ^{[48
]}

Beecher, D. ^{[32
]}

Behari, S. ^{[27
]}

Bellettini, G. ^{[48
,72
]}

Bellinger, J. ^{[61
]}

Benjamin, D. ^{[18
]}

Beretvas, A. ^{[19
]}

Beringer, J. ^{[30
]}

Bhatti, A. ^{[52
]}

Binkley, M. ^{[19
]}

Bisello, D. ^{[45
,71
]}

Bizjak, I. ^{[32
]}

Blair, R. E. ^{[2
]}

Blocker, C. ^{[8
]}

Blumenfeld, B. ^{[27
]}

Bocci, A. ^{[18
]}

Bodek, A. ^{[51
]}

Boisvert, V. ^{[51
]}

Bolla, G. ^{[50
]}

Bortoletto, D. ^{[50
]}

Boudreau, J. ^{[49
]}

Boveia, A. ^{[12
]}

Brau, B. ^{[12
]}

Bridgeman, A. ^{[26
]}

Brigliadori, L. ^{[45
]}

机构：

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

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

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

[4] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 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] 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, San Diego, 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] Joint Inst Nucl Res, RU-141980 Dubna, Russia

[18] Duke Univ, Durham, NC 27708 USA

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

[20] Univ Florida, Gainesville, FL 32611 USA

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

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

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

[24] Harvard Univ, Cambridge, MA 02138 USA

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

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

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

[32] UCL, London WC1E 6BT, England

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

[34] MIT, Cambridge, MA 02139 USA

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

[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] Northwestern Univ, Evanston, IL 60208 USA

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

[42] Okayama Univ, Okayama 7008530, Japan

[43] Osaka City Univ, Okayama 588, Japan

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

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

[46] Univ Paris 06, IN2P3, CNRS, LPNHE,UMR7585, F-75252 Paris, France

[47] Univ Penn, Philadelphia, PA 19104 USA

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

[49] Univ Pittsburgh, Pittsburgh, PA 15260 USA

[50] Purdue Univ, W Lafayette, IN 47907 USA

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 22期

基金：

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

关键词：

SILICON VERTEX DETECTOR; HIERARCHY; JETS; MASS;

D O I：

10.1103/PhysRevLett.102.222003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a measurement of the t(t) over bar differential cross section with respect to the t(t) over bar invariant mass, d sigma/dM(t(t) over bar), in p(p) over bar collisions at root s=1.96 TeV using an integrated luminosity of 2.7 fb(-1) collected by the CDF II experiment. The t(t) over bar invariant mass spectrum is sensitive to a variety of exotic particles decaying into t(t) over bar pairs. The result is consistent with the standard model expectation, as modeled by <emph type="5">PYTHIA with CTEQ5L parton distribution functions.

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