b-tagging in DELPHI at LEP

被引：4

作者：

Abreu, P

Adam, W

Adye, T

Adzic, P

Albrecht, T

Alderweireld, T

Alemany-Fernandez, R

Allmendinger, T

Allport, PP

Almehed, S

Amaldi, U

Amapane, N

Amato, S

Anashkin, E

Andreazza, A

Andringa, S

Anjos, N

Antilogus, P

Apel, WD

Arnoud, Y

Ask, S

Asman, B

Augustin, JE

Augustinus, A

Baillon, P

Ballestrero, A

Bambade, P

Barbier, R

Bardin, D

Barker, G

Baroncelli, A

Bates, M

Battaglia, M

Baubillier, M

Becks, KH

Begalli, M

Behrmann, A

Benekos, N

Benvenuti, A

Berat, C

Berggren, M

Berntzon, L

Bertrand, D

Besancon, M

Besson, N

Bibby, J

Biffi, P

Bloch, D

Blom, M

Bonesini, M

机构：

[1] LIP, IST, FCUL, P-1000 Lisbon, Portugal

[2] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

[3] Univ Instelling Antwerp, Dept Phys, B-2610 Antwerp, Belgium

[4] Free Univ Brussels, IIHE, ULB VUB, B-1050 Brussels, Belgium

[5] Univ Mons, Fac Sci, B-7000 Mons, Belgium

[6] Univ Athens, Phys Lab, GR-10680 Athens, Greece

[7] Univ Bergen, Dept Phys, N-5007 Bergen, Norway

[8] Univ Bologna, Dipartmento Fis, I-40126 Bologna, Italy

[9] Ist Nazl Fis Nucl, I-40126 Bologna, Italy

[10] Ctr Brasileiro Pesquisas Fis, BR-22290 Rio De Janeiro, Brazil

[11] Pontificia Univ Catolica Rio de Janeiro, Dept Fis, BR-22453 Rio De Janeiro, Brazil

[12] Univ Fed Rio de Janeiro, Inst Fis, Rio De Janeiro, Brazil

[13] Coll France, Phys Corpusculaire Lab, CNRS, IN2P3, F-75231 Paris 05, France

[14] CERN, CH-1211 Geneva 23, Switzerland

[15] Univ Strasbourg, CNRS, IN2P3, Inst Rech Subatom, F-67037 Strasbourg, France

[16] NCSR Demokritos, Inst Nucl Phys, GR-15310 Athens, Greece

[17] Acad Sci Czech Republ, Inst Phys, Div High Energy Phys, FZU, CZ-18040 Prague, Czech Republic

[18] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy

[19] Ist Nazl Fis Nucl, I-16146 Genoa, Italy

[20] Univ Grenoble 1, Inst Sci Nucl, CNRS, IN2P3, F-38026 Grenoble, France

[21] Helsinki Inst Phys, Helsinki 00014, Finland

[22] Joint Inst Nucl Res, Moscow 101000, Russia

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

[24] Inst Nucl Phys, PL-30055 Krakow, Poland

[25] Univ Min & Met Krakow, Fac Phys & Nucl Tech, PL-30055 Krakow, Poland

[26] Univ Paris 11, Lab Accelerateur Lineaire, CNRS, IN2P3, F-91405 Orsay, France

[27] Univ Lancaster, Sch Phys & Chem, Lancaster LA1 4YB, England

[28] Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England

[29] Univ Paris 06, LPNHE, IN2P3, CNRS, F-75252 Paris 05, France

[30] Lund Univ, Dept Phys, S-22363 Lund, Sweden

[31] Univ Lyon 1, CNRS, IPNL, IN2P3, F-69622 Villeurbanne, France

[32] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy

[33] INFN MILANO, I-20133 Milan, Italy

[34] Univ Milano Bicocca, Dipartimento Fis, I-20126 Milan, Italy

[35] INFN MILANO, I-20126 Milan, Italy

[36] Charles Univ Prague, IPNP, MFF, CR-18000 Prague, Czech Republic

[37] NIKHEF H, NL-1009 DB Amsterdam, Netherlands

[38] Natl Tech Univ Athens, Dept Phys, GR-15773 Athens, Greece

[39] Univ Oslo, Dept Phys, N-0316 Oslo, Norway

[40] Univ Oviedo, Dept Fis, E-33007 Oviedo, Spain

[41] Univ Oxford, Dept Phys, Oxford OX1 3RH, England

[42] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy

[43] Ist Nazl Fis Nucl, I-35131 Padua, Italy

[44] Rutherford Appleton Lab, Didcot OX11 OQX, Oxon, England

[45] Univ Roma Tor Vergata, Dipartimento Fis, I-00173 Rome, Italy

[46] Ist Nazl Fis Nucl, I-00173 Rome, Italy

[47] Univ Roma III, Dipartimento Fis, I-00146 Rome, Italy

[48] Ist Nazl Fis Nucl, I-00146 Rome, Italy

[49] CEA Saclay, Serv Phys Particules, DAPNIA, F-91191 Gif Sur Yvette, France

[50] UC, CSIC, Inst Fis Cantabria, Santander 39006, Spain

来源：

EUROPEAN PHYSICAL JOURNAL C | 2004年 / 32卷 / 02期

关键词：

D O I：

10.1140/epjc/s2003-01441-8

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The standard method used for tagging b-hadrons in the DELPHI experiment at the CERN LEP Collider is discussed in detail. The main ingredient of b-tagging is the impact parameters of tracks, which relies mostly on the vertex detector. Additional information, such as the mass of particles associated to a secondary vertex, significantly improves the selection efficiency and the background suppression. The paper describes various discriminating variables used for the tagging and the procedure of their combination. In addition, applications of b-tagging to some physics analyses, which depend crucially on the performance and reliability of b-tagging, are described briefly.

引用

页码：185 / 208

页数：24

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