Evidence for t(t)over-barγ production and measurement of σt(t)over-barγ/σt(t)over-bar

被引：44

作者：

Aaltonen, T. ^{[1
,2
]}

Alvarez Gonzalez, B. ^{[12
]}

Amerio, S. ^{[52
]}

Amidei, D. ^{[43
]}

Anastassov, A. ^{[47
]}

Annovi, A. ^{[19
,21
]}

Antos, J. ^{[15
,16
]}

Apollinari, G. ^{[19
]}

Appel, J. A. ^{[19
]}

Apresyan, A. ^{[61
]}

Arisawa, T. ^{[74
]}

Artikov, A. ^{[17
]}

Asaadi, J. ^{[67
]}

Ashmanskas, W. ^{[19
]}

Auerbach, B. ^{[77
]}

Aurisano, A. ^{[67
]}

Azfar, F. ^{[51
]}

Badgett, W. ^{[19
]}

Barbaro-Galtieri, A. ^{[30
,34
]}

Barnes, V. E. ^{[61
]}

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

Barria, P. ^{[56
,58
]}

Bartos, P. ^{[15
,16
]}

Bauce, M. ^{[52
,53
]}

Bauer, G. ^{[38
]}

Bedeschi, F. ^{[56
]}

Beecher, D. ^{[36
]}

Behari, S. ^{[26
]}

Bellettini, G. ^{[56
,57
]}

Bellinger, J. ^{[76
]}

Benjamin, D. ^{[18
]}

Beretvas, A. ^{[19
]}

Bhatti, A. ^{[63
]}

Binkley, M. ^{[19
]}

Bisello, D. ^{[52
,53
]}

Bizjak, I. ^{[36
]}

Bland, K. R. ^{[7
]}

Blumenfeld, B. ^{[26
]}

Bocci, A. ^{[18
]}

Bodek, A. ^{[62
]}

Bortoletto, D. ^{[61
]}

Boudreau, J. ^{[60
]}

Boveia, A. ^{[14
]}

Brau, B. ^{[19
]}

Brigliadori, L. ^{[8
,9
]}

Brisuda, A. ^{[15
,16
]}

Bromberg, C. ^{[44
]}

Brucken, E. ^{[1
,2
]}

Bucciantonio, M. ^{[56
,57
]}

Budagov, J. ^{[17
]}

机构：

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

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

[3] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

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

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

[6] Univ Autonoma Barcelona, ICREA, Inst Fis Altes Energies, E-08193 Bellaterra, Barcelona, Spain

[7] Baylor Univ, Waco, TX 76798 USA

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

[9] Univ Bologna, I-40127 Bologna, Italy

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

[11] Univ Calif Los Angeles, Los Angeles, CA 90024 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] Comenius Univ, Bratislava 84248, Slovakia

[16] Inst Expt Phys, Kosice 04001, 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] 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] 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] Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada

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

[42] TRIUMF, Vancouver, BC V6T 2A3, Canada

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

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

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

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

[47] Northwestern Univ, Evanston, IL 60208 USA

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

[49] Okayama Univ, Okayama 7008530, Japan

[50] Osaka City Univ, Osaka 588, Japan

来源：

PHYSICAL REVIEW D | 2011年 / 84卷 / 03期

基金：

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

关键词：

CDF; PERFORMANCE; GENERATION; DETECTOR;

D O I：

10.1103/PhysRevD.84.031104

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using data corresponding to 6.0 fb(-1) of p (p) over bar collisions at root s = 1.96 TeV collected by the CDF II detector, we present a cross section measurement of top-quark pair production with an additional radiated photon in the central region with 10 GeV or more of transverse energy t (t) over bar gamma. The events are selected by looking for a lepton (l or mu), a photon (gamma), significant transverse momentum imbalance (is not an element of(T)), large total transverse energy, and three or more jets, with at least one identified as containing a b quark (b). Using an event selection optimized for the t (t) over bar gamma candidate sample, we also measure the cross section of t (t) over bar (sigma(t (t) over bar)). We measure the t (t) over bar gamma cross section (sigma(t (t) over bar gamma)) to be 0.18 +/- 0.08 pb, and the ratio of sigma(t (t) over bar gamma) to sigma(t (t) over bar) to be 0.024 +/- 0.009. We observe a probability of 0.0015 (3.0 standard deviations) of the background (non-t (t) over bar gamma events alone producing 30 events or more.

引用

页数：9

共 50 条

[1] T(T)over-bar, J(T)over-bar, T(J)over-bar and string theory
Chakraborty, Soumangsu
Giveon, Amit
Kutasov, David
[J]. JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2019, 52 (38)
[2] TsT, black holes, and T(T)over-bar + J(T)over-bar + T(J)over-bar
Apolo, Luis
Song, Wei
[J]. JOURNAL OF HIGH ENERGY PHYSICS, 2022, (04):
[3] T(T)over-bar, J(T)over-bar, T(J)over-bar partition sums from string theory
Hashimoto, Akikazu
Kutasov, David
[J]. JOURNAL OF HIGH ENERGY PHYSICS, 2020, (02):
[4] Entropic c-functions in T(T)over-bar, J(T)over-bar, T(J)over-bar deformations
Asrat, Meseret
[J]. NUCLEAR PHYSICS B, 2020, 960
[5] Single lepton charge asymmetries in t(t)over-bar and t(t)over-barγ production at the LHC
Aguilar-Saavedra, J. A.
[J]. EUROPEAN PHYSICAL JOURNAL C, 2018, 78 (06):
[6] Determination of κt from t(t)over-bar, t(t)over-bart(t)over-bar, and others
Usai, Emanuele
[J]. NINTH ANNUAL CONFERENCE ON LARGE HADRON COLLIDER PHYSICS, LHCP2021, 2021,
[7] Holographic complexity of LST and single trace T(T)over-bar, J(T)over-bar and T(J)over-bar deformations
Katoch, Gaurav
Mitra, Swejyoti
Roy, Shubho R.
[J]. JOURNAL OF HIGH ENERGY PHYSICS, 2022, (10):
[8] Measurements of t(t)over-bar+jets, t(t)over-barb(b)over-bar and t(t)over-bart(t)over-bar production with CMS
Wertz, Sebastien
[J]. EUROPEAN PHYSICAL SOCIETY CONFERENCE ON HIGH ENERGY PHYSICS, EPS-HEP2019, 2020,
[9] T(T)over-bar and LST
Giveon, Amit
Itzhaki, Nissan
Kutasov, David
[J]. JOURNAL OF HIGH ENERGY PHYSICS, 2017, (07):
[10] Production of hh(t)over-bar and ht(T)over-bar in the littlest Higgs model with T parity
Wang, Lei
Wang, Wenyu
Yang, Jin Min
Zhang, Huanjun
[J]. PHYSICAL REVIEW D, 2007, 75 (07):

← 1 2 3 4 5 →