MEASUREMENT OF THE TRIPLE-GLUON VERTEX FROM 4-JET EVENTS AT LEP

被引：0

作者：

ABREU, P

ADAM, W

ADYE, T

AGASI, E

ALEKSAN, R

ALEKSEEV, GD

ALGERI, A

ALLEN, P

ALMEHED, S

ALSVAAG, SJ

AMALDI, U

ANDREAZZA, A

ANTILOGUS, P

APEL, WD

APSIMON, RJ

ARNOUD, Y

ASMAN, B

AUGUSTIN, JE

AUGUSTINUS, A

BAILLON, P

BAMBADE, P

BARAO, F

BARATE, R

BARBIELLINI, G

BARDIN, DY

BARKER, GJ

BARONCELLI, A

BARRING, O

BARRIO, JA

BARTL, W

BATES, MJ

BATTAGLIA, M

BAUBILLIER, M

BECKS, KH

BEESTON, CJ

BEGALLI, M

BEILLIERE, P

BELOKOPYTOV, Y

BELTRAN, P

BENEDIC, D

BENVENUTI, AC

BERGGREN, M

BERTRAND, D

BIANCHI, F

BILENKY, MS

BILLOIR, P

BJARNE, J

BLOCH, D

BLYTH, S

BOCCI, V

机构：

[1] IOWA STATE UNIV SCI & TECHNOL, AMES LAB, AMES, IA 50011 USA

[2] UNIV INSTELLING ANTWERP, DEPT PHYS, B-2610 Antwerp, BELGIUM

[3] ULB, VUB, IIHE, B-1050 BRUSSELS, BELGIUM

[4] UNIV ETAT MONS, FAC SCI, B-7000 MONS, BELGIUM

[5] UNIV ATHENS, PHYS LAB, GR-10680 ATHENS, GREECE

[6] UNIV BERGEN, DEPT PHYS, N-5007 BERGEN, NORWAY

[7] UNIV BOLOGNA, DIPARTIMENTO FIS, I-40126 BOLOGNA, ITALY

[8] INFN, I-40126 BOLOGNA, ITALY

[9] COLL FRANCE, PHYS CORPUSCULAIRE LAB, CNRS, F-75231 PARIS 05, FRANCE

[10] CERN, CH-1211 GENEVA 23, SWITZERLAND

[11] CTR RECH NUCL, CNRS, ULP, F-67037 STRASBOURG, FRANCE

[12] NCSR DEMOKRITOS, INST NUCL PHYS, GR-15130 ATHENS, GREECE

[13] FZU, INST PHYS, DIV CAS HIGH ENERGY PHYS, CS-18940 PRAGUE 8, CZECHOSLOVAKIA

[14] UNIV GENOA, DIPARTIMENTO FIS, I-16146 GENOA, ITALY

[15] INFN, I-16146 GENOA, ITALY

[16] UNIV GRENOBLE 1, INST SCI NUCL, CNRS, F-38026 GRENOBLE, FRANCE

[17] SEFT, HIGH ENERGY PHYS RES INST, SF-00170 HELSINKI, FINLAND

[18] DUBNA JOINT NUCL RES INST, HEAD POST OFF, MOSCOW 101000, RUSSIA

[19] UNIV KARLSRUHE, INST EXPTL KERNPHYS, W-7500 KARLSRUHE 1, GERMANY

[20] INST NUCL PHYS, HIGH ENERGY PHYS LAB, PL-30055 KRAKOW 30, POLAND

[21] CTR BRASILEIRO PESQUISAS FIS, BR-22290 RIO DE JANEIRO, BRAZIL

[22] UNIV PARIS 11, ACCELERATEUR LINEAIRE LAB, F-91405 ORSAY, FRANCE

[23] UNIV LANCASTER, SCH PHYS & MAT, LANCASTER LA1 4YB, ENGLAND

[24] UNIV LIVERPOOL, DEPT PHYS, LIVERPOOL L69 3BX, ENGLAND

[25] UNIV PARIS 06, LPNHE, CNRS, F-75252 PARIS 05, FRANCE

[26] UNIV PARIS 07, LPNHE, CNRS, F-75252 PARIS 05, FRANCE

[27] LUND UNIV, DEPT PHYS, S-22363 LUND, SWEDEN

[28] UNIV LYON 1, IPNL, CNRS, F-69622 VILLEURBANNE, FRANCE

[29] UNIV COMPLUTENSE, E-28040 MADRID, SPAIN

[30] UNIV AIX MARSEILLE 2, CPP, CNRS, I-20133 MILAN, ITALY

[31] UNIV MILAN, DIPARTIMENTO FIS, I-20133 MILAN, ITALY

[32] INFN, I-20133 MILAN, ITALY

[33] NIELS BOHR INST, DK-2100 COPENHAGEN 0, DENMARK

[34] CHARLES UNIV, MFF, CTR NUCL, CS-18000 PRAGUE 8, CZECHOSLOVAKIA

[35] NATL INST NUCL PHYS & HIGH ENERGY PHYS, 1009 DB AMSTERDAM, NETHERLANDS

[36] NATL TECH UNIV ATHENS, DEPT PHYS, GR-15773 ATHENS, GREECE

[37] UNIV OSLO, DEPT PHYS, N-1000 OSLO 3, NORWAY

[38] UNIV OVIEDO, DPTO FIS, E-33006 OVIEDO, SPAIN

[39] UNIV OXFORD, DEPT PHYS, OXFORD OX1 3RH, ENGLAND

[40] UNIV PADUA, DIPARTIMENTO FIS, I-35131 PADUA, ITALY

[41] INFN, I-35131 PADUA, ITALY

[42] PONTIFICIA UNIV CATOLICA, DEPT FIS, BR-22453 RIO DE JANEIRO, BRAZIL

[43] RUTHERFORD APPLETON LAB, DIDCOT OX11 0QX, OXON, ENGLAND

[44] UNIV ROMA TOR VERGATA, DIPARTIMENTO FIS, I-00173 ROME, ITALY

[45] INFN, I-00173 ROME, ITALY

[46] CENS, DSM, DAPNIA, F-91191 GIF SUR YVETTE, FRANCE

[47] UNIV SALERNO, DIPARTIMENTO FIS, I-84100 SALERNO, ITALY

[48] IST SUPER SANITA, INFN, I-00161 ROME, ITALY

[49] UNIV CANTABRIA, CSIC, CEAFM, E-39005 SANTANDER, SPAIN

[50] PROTVINO HIGH ENERGY PHYS INST, PROTVINO, RUSSIA

来源：

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1993年 / 59卷 / 03期

关键词：

D O I：

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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：

From the combined data of 1990 and 1991 of the DELPHI experiment at LEP, 13057 4-jet events are obtained and used for determining the contribution of the triple-gluon vertex. The relevant variables are the generalized Nachtmann Reiter angle theta(NR)* and the opening angle of the two least energetic jets. A fit to their two-dimensional distribution yields C(A)/C(F)=2.12+/-0.35 and N(C)/N(A)=0.46+/-0.19, where C(A)/C(F) is the ratio of the coupling strength of the triple-gluon vertex to that of gluon bremsstrahlung from quarks, and N(C)/N(A), the ratio of the number of quark colours to the number of gluons. This constitutes a convincing model-independent proof of the existence of the triple-gluon vertex, since its contribution is directly proportional to C(A)/C(F). The results are in agreement with the values expected from QCD: C(A)/C(F)=2.25, and N(C)/N(A)=3/8.

引用

页码：357 / 368

页数：12

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