Identification of b-quark jets with the CMS experiment

被引：435

作者：

Chatrchyan, S. ^{[1
]}

Khachatryan, V. ^{[1
]}

Sirunyan, A. M. ^{[1
]}

Tumasyan, A. ^{[1
]}

Adam, W. ^{[2
]}

Aguilo, E. ^{[2
]}

Bergauer, T. ^{[2
]}

Dragicevic, M. ^{[2
]}

Eroe, J. ^{[2
]}

Fabjan, C. ^{[2
,182
]}

Friedl, M. ^{[2
]}

Fruehwirth, R. ^{[2
,182
]}

Ghete, V. M. ^{[2
]}

Hammer, J. ^{[2
]}

Hoermann, N. ^{[2
]}

Hrubec, J. ^{[2
]}

Jeitler, M. ^{[2
,182
]}

Kiesenhofer, W. ^{[2
]}

Knunz, V. ^{[2
]}

Krammer, M. ^{[2
,182
]}

Kraetschmer, I. ^{[2
]}

Liko, D. ^{[2
]}

Mikulec, I. ^{[2
]}

Pernicka, M. ^{[2
]}

Rahbaran, B. ^{[2
]}

Rohringer, C. ^{[2
]}

Rohringer, H. ^{[2
]}

Schoefbeck, R. ^{[2
]}

Strauss, J. ^{[2
]}

Taurok, A. ^{[2
]}

Waltenberger, W. ^{[2
]}

Walzel, G. ^{[2
]}

Widl, E. ^{[2
]}

Wulz, C. -E. ^{[2
,182
]}

Mossolov, V. ^{[3
]}

Shumeiko, N. ^{[3
]}

Gonzalez, J. Suarez ^{[3
]}

Bansal, M. ^{[4
]}

Bansal, S. ^{[4
]}

Cornelis, T. ^{[4
]}

De Wolf, E. A. ^{[4
]}

Janssen, X. ^{[4
]}

Luyckx, S. ^{[4
]}

Mucibello, L. ^{[4
]}

Ochesanu, S. ^{[4
]}

Roland, B. ^{[4
]}

Rougny, R. ^{[4
]}

Selvaggi, M. ^{[4
]}

Staykova, Z. ^{[4
]}

Van Haevermaet, H. ^{[4
]}

机构：

[1] Yerevan Phys Inst, Yerevan 375036, Armenia

[2] OeAW, Inst Hochenergiephys, Vienna, Austria

[3] Natl Ctr Particle & High Energy Phys, Minsk, BELARUS

[4] Univ Antwerp, B-2020 Antwerp, Belgium

[5] Vrije Univ Brussel, Brussels, Belgium

[6] Univ Libre Bruxelles, Brussels, Belgium

[7] Univ Ghent, B-9000 Ghent, Belgium

[8] Catholic Univ Louvain, B-1348 Louvain, Belgium

[9] Univ Mons, B-7000 Mons, Belgium

[10] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil

[11] Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil

[12] Inst Fis Teor CA, Sao Paulo, Brazil

[13] Univ Estadual Paulista, Sao Paulo, Brazil

[14] Inst Nucl Energy Res, Sofia, Bulgaria

[15] Univ Sofia, BU-1126 Sofia, Bulgaria

[16] Inst High Energy Phys, Beijing 100039, Peoples R China

[17] Peking Univ, State Key Lab Nucl Phys & Tech, Beijing 100871, Peoples R China

[18] Univ Los Andes, Bogota, Colombia

[19] Tech Univ Split, Split, Croatia

[20] Univ Split, Split, Croatia

[21] Rudjer Boskovic Inst, Zagreb, Croatia

[22] Univ Cyprus, Nicosia, Cyprus

[23] Charles Univ Prague, Prague, Czech Republic

[24] Acad Sci Res & Technol Arab Republ Egypt, Egyptian Network High Energy Phys, Cairo, Egypt

[25] NICPB, Tallinn, Estonia

[26] Univ Helsinki, Dept Phys, Helsinki, Finland

[27] Helsinki Inst Phys, Helsinki, Finland

[28] Lappeenranta Univ Technol, Lappeenranta, Finland

[29] CEA Saclay, DSM IRFU, F-91191 Gif Sur Yvette, France

[30] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France

[31] Univ Strasbourg, Univ Haute Alsace Mulhouse, CNRS, IN2P3,Inst Pluridisciplinaire Hubert Curien, Strasbourg, France

[32] CNRS, Inst Natl Phys Nucl & Phys Particules, IN2P3, Ctr Calcul, Villeurbanne, France

[33] Univ Lyon 1, Univ Lyon, CNRS, IN2P3,Inst Phys Nucl Lyon, F-69622 Villeurbanne, France

[34] Tbilisi State Univ, Inst High Energy Phys & Informatizat, GE-380086 Tbilisi, Georgia

[35] Rhein Westfal TH Aachen, Inst Phys 1, Aachen, Germany

[36] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany

[37] Rhein Westfal TH Aachen, Phys Inst B 3, Aachen, Germany

[38] DESY, Hamburg, Germany

[39] Univ Hamburg, Hamburg, Germany

[40] Univ Karlsruhe, Inst Expt Kernphys, Karlsruhe, Germany

[41] Inst Nucl Phys Demokritos, Aghia Paraskevi, Greece

[42] Univ Athens, Athens, Greece

[43] Univ Ioannina, GR-45110 Ioannina, Greece

[44] KFKI Res Inst Particle & Nucl Phys, Budapest, Hungary

[45] Inst Nucl Res ATOMKI, Debrecen, Hungary

[46] Univ Debrecen, H-4012 Debrecen, Hungary

[47] Panjab Univ, Chandigarh 160014, India

[48] Univ Delhi, Delhi 110007, India

[49] Saha Inst Nucl Phys, Kolkata, India

[50] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India

来源：

JOURNAL OF INSTRUMENTATION | 2013年 / 8卷

基金：

巴西圣保罗研究基金会; 俄罗斯基础研究基金会; 欧洲研究理事会; 奥地利科学基金会; 美国国家科学基金会; 中国国家自然科学基金; 英国科学技术设施理事会; 芬兰科学院;

关键词：

Large detector-systems performance; Pattern recognition; cluster finding; calibration and fitting methods; Performance of High Energy Physics Detectors; TO-LEADING ORDER;

D O I：

10.1088/1748-0221/8/04/P04013

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

At the Large Hadron Collider, the identification of jets originating from b quarks is important for searches for new physics and for measurements of standard model processes. A variety of algorithms has been developed by CMS to select b-quark jets based on variables such as the impact parameters of charged-particle tracks, the properties of reconstructed decay vertices, and the presence or absence of a lepton, or combinations thereof. The performance of these algorithms has been measured using data from proton-proton collisions at the LHC and compared with expectations based on simulation. The data used in this study were recorded in 2011 at root s = 7TeV for a total integrated luminosity of 5.0 fb(-1). The efficiency for tagging b-quark jets has been measured in events from multijet and t-quark pair production. CMS has achieved a b-jet tagging efficiency of 85% for a light-parton misidentification probability of 10% in multijet events. For analyses requiring higher purity, a misidentification probability of only 1.5% has been achieved, for a 70% b-jet tagging efficiency.

引用

页数：66

共 47 条

[1] b-Jet identification in the D0 experiment [J].

Abazov, V. M. ;

Abbott, B. ;

Abolins, M. ;

Acharya, B. S. ;

Adams, M. ;

Adams, T. ;

Aguilo, E. ;

Alexeev, G. D. ;

Alkhazov, G. ;

Alton, A. ;

Alverson, G. ;

Alves, G. A. ;

Anastasoaie, M. ;

Ancu, L. S. ;

Aoki, M. ;

Arnoud, Y. ;

Arov, M. ;

Askew, A. ;

Asman, B. ;

Atramentov, O. ;

Avila, C. ;

BackusMayes, J. ;

Badaud, F. ;

Bagby, L. ;

Baldin, B. ;

Bandurin, D. V. ;

Banerjee, S. ;

Barberis, E. ;

Barfuss, A. -F. ;

Baringer, P. ;

Barreto, J. ;

Bartlett, J. F. ;

Bassler, U. ;

Beale, S. ;

Bean, A. ;

Begalli, M. ;

Begel, M. ;

Belanger-Champagne, C. ;

Bellantoni, L. ;

Benitez, J. A. ;

Beri, S. B. ;

Bernardi, G. ;

Bernhard, R. ;

Bertram, I. ;

Besancon, M. ;

Beuselinck, R. ;

Bezzubov, V. A. ;

Bhat, P. C. ;

Bhatnagar, V. ;

Blazey, G. .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2010, 620 (2-3) :490-517

[2] GEANT4-a simulation toolkit [J].

Agostinelli, S ;

Allison, J ;

Amako, K ;

Apostolakis, J ;

Araujo, H ;

Arce, P ;

Asai, M ;

Axen, D ;

Banerjee, S ;

Barrand, G ;

Behner, F ;

Bellagamba, L ;

Boudreau, J ;

Broglia, L ;

Brunengo, A ;

Burkhardt, H ;

Chauvie, S ;

Chuma, J ;

Chytracek, R ;

Cooperman, G ;

Cosmo, G ;

Degtyarenko, P ;

Dell'Acqua, A ;

Depaola, G ;

Dietrich, D ;

Enami, R ;

Feliciello, A ;

Ferguson, C ;

Fesefeldt, H ;

Folger, G ;

Foppiano, F ;

Forti, A ;

Garelli, S ;

Giani, S ;

Giannitrapani, R ;

Gibin, D ;

Cadenas, JJG ;

González, I ;

Abril, GG ;

Greeniaus, G ;

Greiner, W ;

Grichine, V ;

Grossheim, A ;

Guatelli, S ;

Gumplinger, P ;

Hamatsu, R ;

Hashimoto, K ;

Hasui, H ;

Heikkinen, A ;

Howard, A .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 506 (03) :250-303

[3]

ALBAJAR C, 1988, Z PHYS C PART FIELDS, V37, P489, DOI 10.1007/BF01549709

[4] MadGraph 5: going beyond [J].

Alwall, Johan ;

Herquet, Michel ;

Maltoni, Fabio ;

Mattelaer, Olivier ;

Stelzer, Tim .

JOURNAL OF HIGH ENERGY PHYSICS, 2011, (06)

[5] REVIEW OF PARTICLE PHYSICS Particle Data Group [J].

Beringer, J. ;

Arguin, J. -F. ;

Barnett, R. M. ;

Copic, K. ;

Dahl, O. ;

Groom, D. E. ;

Lin, C. -J. ;

Lys, J. ;

Murayama, H. ;

Wohl, C. G. ;

Yao, W. -M. ;

Zyla, P. A. ;

Amsler, C. ;

Antonelli, M. ;

Asner, D. M. ;

Baer, H. ;

Band, H. R. ;

Basaglia, T. ;

Bauer, C. W. ;

Beatty, J. J. ;

Belousov, V. I. ;

Bergren, E. ;

Bernardi, G. ;

Bertl, W. ;

Bethke, S. ;

Bichsel, H. ;

Biebel, O. ;

Blucher, E. ;

Blusk, S. ;

Brooijmans, G. ;

Buchmueller, O. ;

Cahn, R. N. ;

Carena, M. ;

Ceccucci, A. ;

Chakraborty, D. ;

Chen, M. -C. ;

Chivukula, R. S. ;

Cowan, G. ;

D'Ambrosio, G. ;

Damour, T. ;

de Florian, D. ;

de Gouvea, A. ;

DeGrand, T. ;

de Jong, P. ;

Dissertori, G. ;

Dobrescu, B. ;

Doser, M. ;

Drees, M. ;

Edwards, D. A. ;

Eidelman, S. .

PHYSICAL REVIEW D, 2012, 86 (01)

[6] Software alignment for tracking detectors [J].

Blobel, V. .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2006, 566 (01) :5-13

[7] Fine tuning of track impact parameter resolution of the DELPHI detector [J].

Borisov, G ;

Mariotti, C .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1996, 372 (1-2) :181-187

[8]

Botje M., ARXIV11010538

[9] A PRECISE MEASUREMENT OF GAMMA-Z-]B(B)BAR/GAMMA-Z-] HADRONS [J].

BUSKULIC, D ;

DEBONIS, I ;

DECAMP, D ;

GHEZ, P ;

GOY, C ;

LEES, JP ;

MINARD, MN ;

PIETRZYK, B ;

ARIZTIZABAL, F ;

COMAS, P ;

CRESPO, JM ;

DELFINO, M ;

EFTHYMIOPOULOS, I ;

FERNANDEZ, E ;

FERNANDEZBOSMAN, M ;

GAITAN, V ;

GARRIDO, L ;

MATTISON, T ;

PACHECO, A ;

PADILLA, C ;

PASCUAL, A ;

CREANZA, D ;

DEPALMA, M ;

FARILLA, A ;

IASELLI, G ;

MAGGI, G ;

NATALI, S ;

NUZZO, S ;

QUATTROMINI, M ;

RANIERI, A ;

RASO, G ;

ROMANO, F ;

RUGGIERI, F ;

SELVAGGI, G ;

SILVESTRIS, L ;

TEMPESTA, P ;

ZITO, G ;

CHAI, Y ;

HU, H ;

HUANG, D ;

HUANG, X ;

LIN, J ;

WANG, T ;

XIE, Y ;

XU, D ;

XU, R ;

ZHANG, J ;

ZHANG, L ;

ZHAO, W ;

BLUCHER, E .

PHYSICS LETTERS B, 1993, 313 (3-4) :535-548

[10] The anti-kt jet clustering algorithm [J].

Cacciari, Matteo ;

Salam, Gavin P. ;

Soyez, Gregory .

JOURNAL OF HIGH ENERGY PHYSICS, 2008, (04)

← 1 2 3 4 5 →