Identified charged particles in quark and gluon jets

被引：50

作者：

Abreu, P

Adam, W

Adye, T

Adzic, P

Albrecht, Z

Alderweireld, T

Alekseev, GD

Alemany, R

Allmendinger, T

Allport, PP

Almehed, S

Amaldi, U

Amapane, N

Amato, S

Anassontzis, EG

Andersson, P

Andreazza, A

Andringa, S

Antilogus, P

Apel, WD

Arnoud, Y

Åsman, B

Augustin, JE

Augustinus, A

Baillon, P

Ballestrero, A

Bambade, P

Barao, F

Barbiellini, G

Barbier, R

Bardin, DY

Barker, G

Baroncelli, A

Battaglia, M

Baubillier, M

Becks, KH

Begalli, M

Behrmann, A

Beilliere, P

Belokopytov, Y

Belous, K

Benekos, NC

Benvenuti, AC

Berat, C

Berggren, M

Bertrand, D

Besancon, M

Bigi, M

Bilenky, MS

Bizouard, MA

机构：

[1] FCUL, IST, LIP, 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] VUB, ULB, IIHE, B-1050 Brussels, Belgium

[5] Univ Etat 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, Dipartimento 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 Estado Rio De Janeiro, Inst Fis, Rio De Janeiro, Brazil

[13] Comenius Univ, Fac Math & Phys, Bratislava 84215, Slovakia

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

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

[16] ULP, CNRS, IN2P3, Inst Rech Subat, F-67037 Strasbourg, France

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

[18] CAS High Energy Phys Div, Inst Phys, FZU, Prague 18040 8, Czech Republic

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

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

[21] Univ Grenoble 1, CNRS, IN2P3, Inst Nucl Sci, F-38026 St Martin Dheres, France

[22] HIP, Helsinki 00014, Finland

[23] Joint Inst Nucl Res, RU-101000 Moscow, Russia

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

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

[26] Univ Min & Met Krakow, PL-30055 Krakow, Poland

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

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

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

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

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

[32] Univ Paris 07, CNRS, IN2P3, LPNHE, F-75252 Paris 05, France

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

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

[35] Univ Aix Marseille 2, CNRS, IN2P3, CPP, F-13288 Marseille 09, France

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

[37] Ist Nazl Fis Nucl, I-20133 Milan, Italy

[38] Univ Milan, Dipartimento Fis, I-20126 Milan, Italy

[39] Ist Nazl Fis Nucl, I-20126 Milan, Italy

[40] Niels Bohr Inst, DK-2100 Copenhagen O, Denmark

[41] Charles Univ Prague, MFF, IPNP, Prague 18000 8, Czech Republic

[42] NIKHEF, NL-1009 AB Amsterdam, Netherlands

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

[44] Univ Oslo, Dept Phys, N-1000 Oslo 3, Norway

[45] Univ Oviedo, Dpto Fis, Oviedo 33007, Spain

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

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

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

[49] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

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

来源：

EUROPEAN PHYSICAL JOURNAL C | 2000年 / 17卷 / 02期

关键词：

D O I：

10.1007/s100520000449

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：

A sample of 2.2 million hadronic Z decays, selected from the data recorded by the DELPHI detector at LEP during 1994-1995 was used for an improved measurement of inclusive distributions of pi (+), K+ and p and their antiparticles in gluon and quark jets. The production spectra of the individual identified particles were found to be softer in gluon jets compared to quark jets, with a higher multiplicity in gluon jets as observed for inclusive charged particles. A significant proton enhancement in gluon jets is observed indicating that baryon production proceeds directly from colour objects. The maxima, xi*, of the S-distributions for kaons in gluon and quark jets are observed to be different.

引用

页码：207 / 222

页数：16

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