CHARGED-PARTICLE MULTIPLICITY DISTRIBUTIONS IN RESTRICTED RAPIDITY INTERVALS IN Z0 HADRONIC DECAYS

被引：80

作者：

Abreu, P

Adam, W

Adami, F

Adye, T

Akesson, T

Alekseev, GD

Allen, P

Almehed, S

Alted, F

Alvsvaag, SJ

Amaldi, U

Anassontzis, E

Antilogus, P

Apel, WD

Asman, B

Augustin, JE

Augustinus, A

Baillon, P

Bambade, P

Barao, F

Barbiellini, G

Bardin, DY

Baroncelli, A

Barring, O

Bartl, W

Battaglia, M

Bates, MJ

Baubillier, M

Becks, KH

Beeston, CJ

Begalli, M

Beiliere, P

Belokopytov, Y

Beltran, P

Benedic, D

Benlloch, JM

Berggren, M

Bertrand, D

Biagi, S

Bianchi, F

Bibby, JH

Bilenky, MS

Billoir, P

Bjarne, J

Bloch, D

Blyth, S

Bogolubov, PN

Bolognese, T

Bonapart, M

Bonesini, M

机构：

[1] Iowa State Univ, Dept Phys, Ames, IA 50011 USA

[2] Iowa State Univ, Ames Lab, Ames, IA 50011 USA

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

[4] ULB VUB, IIHE, B-1050 Brussels, BELGIUM

[5] Univ Etat Mons, Serv Phys Part Elem, 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] Coll France, Lab Phys Corpusculaire, F-75231 Paris 05, FRANCE

[11] CERN, CH-1211 Geneva 23, SWITZERLAND

[12] Grp DELPHI, CRN, Div Hautes Energies, F-67037 Strasbourg, FRANCE

[13] Grp LEPSI, CRN, Div Hautes Energies, F-67037 Strasbourg, FRANCE

[14] NRC Demokritos, Inst Nucl Phys, GR-15310 Athens, GREECE

[15] Ist Nazl Fis Nucl, I-16146 Genoa, ITALY

[16] Univ Genoa, Dipartimento Fis, I-16146 Genoa, ITALY

[17] Univ Helsinki, Res Inst High Energy Phys, SF-00170 Helsinki 17, FINLAND

[18] Joint Inst Nucl Res Dubna, Moscow 101000, RUSSIA

[19] Univ Karlsruhe, Inst Expt Kernphys, D-7500 Karlsruhe 1, GERMANY

[20] Inst Nucl Phys, High Energy Phys Lab, PL-30055 Krakow 30, POLAND

[21] Univ Paris Sud, Lab Accelerateur Lineaire, F-91405 Orsay, FRANCE

[22] LIP, P-1000 Lisbon, PORTUGAL

[23] Univ Liverpool, Dept Phys, Liverpool L69 3BX, ENGLAND

[24] Univ Paris 06, LPNHE, F-75230 Paris 05, FRANCE

[25] Univ Paris 07, LPNHE, F-75230 Paris 05, FRANCE

[26] Univ Lund, Dept Phys, S-22363 Lund, SWEDEN

[27] Univ Claude Bernard Lyon, F-69622 Villeurbanne, FRANCE

[28] Univ Complutense, Dept Fis Atom Mol & Nucl, E-28040 Madrid, SPAIN

[29] Fac Sci Oujda, Dept Phys, Oujda, MOROCCO

[30] Univ Aix Marseille 2, Fac Sci Luminy, F-13288 Marseille 09, FRANCE

[31] Univ Milan, Dipartimento Fis, I-20133 Milan, ITALY

[32] Ist Nazl Fis Nucl, I-20133 Milan, ITALY

[33] Niels Bohr Inst, DK-2100 Copenhagen, DENMARK

[34] NIKHEF H, NL-1009 DB Amsterdam, NETHERLANDS

[35] Natl Tech Univ, Dept Phys, GR-15773 Athens, GREECE

[36] Univ Oslo, Dept Phys, N-1000 Oslo 3, NORWAY

[37] Univ Oxford, Nucl Phys Lab, Oxford OX1 3RH, ENGLAND

[38] Univ Padua, Dipartimento Fis, I-35131 Padua, ITALY

[39] Ist Nazl Fis Nucl, I-35131 Padua, ITALY

[40] Rutherford Appleton Lab, Chilton OX11 OQX, ENGLAND

[41] Univ Rome 2, Dipartimento Fis, I-00173 Rome, ITALY

[42] Ist Nazl Fis Nucl, I-00173 Rome, ITALY

[43] CEN Saclay, DPhPE, F-91191 Gif Sur Yvette, FRANCE

[44] Ist Nazl Fis Nucl, Ist Super Sanita, I-00161 Rome, ITALY

[45] Univ Santander, Fac Ciencias, E-39005 Santander, SPAIN

[46] Inst High Energy Phys, Protvino, RUSSIA

[47] Univ Stockholm, Inst Phys, S-11346 Stockholm, SWEDEN

[48] Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, ITALY

[49] Ist Nazl Fis Nucl, I-10125 Turin, ITALY

[50] Univ Trieste, Dipartimento Fis, I-34127 Trieste, ITALY

来源：

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1991年 / 52卷 / 02期

关键词：

D O I：

10.1007/BF01560444

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 multiplicity distributions of charged particles in restricted rapidity intervals in Z0 hadronic decays measured by the DELPHI detector are presented. The data reveal a shoulder structure, best visible for intervals of intermediate size, i.e. for rapidity limits around +/- 1.5. The whole set of distributions including the shoulder structure is reproduced by the Lund Parton Shower model. The structure is found to be due to important contributions from 3- and 4-jet events with a hard gluon jet. A different model, based on the concept of independently produced groups of particles, "clans", fluctuating both in number per event and particle content per clan, has also been used to analyse the present data. The results show that for each interval of rapidity the average number of clans per event is approximately the same as at lower energies.

引用

页码：271 / 281

页数：11

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