MEASUREMENT OF ALPHA(S) FROM JET RATES IN DEEP-INELASTIC SCATTERING AT HERA

被引：42

作者：

DERRICK, M

KRAKAUER, D

MAGILL, S

MIKUNAS, D

MUSGRAVE, B

REPOND, J

STANEK, R

TALAGA, RL

ZHANG, H

AYAD, R

BARI, G

BASILE, M

BELLAGAMBA, L

BOSCHERINI, D

BRUNI, A

BRUNI, G

BRUNI, P

ROMEO, GC

CASTELLINI, G

CHIARINI, M

CIFARELLI, L

CINDOLO, F

CONTIN, A

CORRADI, M

GIALAS, I

GIUSTI, P

IACOBUCCI, G

LAURENTI, G

LEVI, G

MARGOTTI, A

MASSAM, T

NANIA, R

NEMOZ, C

PALMONARI, F

POLINI, A

SARTORELLI, G

TIMELLINI, R

GARCIA, YZ

ZICHICHI, A

BARGENDE, A

BORNHEIM, A

CRITTENDEN, J

DESCH, K

DIEKMANN, B

DOEKER, T

ECKERT, M

FELD, L

FREY, A

GEERTS, M

GROTHE, M

机构：

[1] UNIV BOLOGNA, I-40126 BOLOGNA, ITALY

[2] IST NAZL FIS NUCL, I-40126 BOLOGNA, ITALY

[3] UNIV BONN, INST PHYS, W-5300 BONN, GERMANY

[4] UNIV BRISTOL, HH WILLS PHYS LAB, BRISTOL BS8 1TH, AVON, ENGLAND

[5] BROOKHAVEN NATL LAB, UPTON, NY 11973 USA

[6] COLUMBIA UNIV, NEVIS LABS, IRVINGTON, NY USA

[7] INST NUCL PHYS, KRAKOW, POLAND

[8] ACAD MIN & MET, FAC PHYS & NUCL TECHNIQUES, KRAKOW, POLAND

[9] JAGIELLONIAN UNIV, DEPT PHYS, PL-31007 KRAKOW, POLAND

[10] DESY, W-2000 HAMBURG, GERMANY

[11] DESY, INST HOCHENERGIEPHYS, ZEUTHEN, GERMANY

[12] IST NAZL FIS NUCL, I-50125 FLORENCE, ITALY

[13] UNIV FLORENCE, I-50121 FLORENCE, ITALY

[14] IST NAZL FIS NUCL, LAB NAZL FRASCATI, I-00044 FRASCATI, ITALY

[15] UNIV FREIBURG, FAK PHYS, W-7800 FREIBURG, GERMANY

[16] UNIV GLASGOW, DEPT PHYS & ASTRON, GLASGOW, LANARK, SCOTLAND

[17] UNIV HAMBURG, INST EXPTL PHYS 1, W-2000 HAMBURG, GERMANY

[18] UNIV HAMBURG, INST EXPTL PHYS 2, W-2000 HAMBURG, GERMANY

[19] UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED, HIGH ENERGY NUCL PHYS GRP, LONDON, ENGLAND

[20] UNIV IOWA, DEPT PHYS & ASTRON, IOWA CITY, IA 52242 USA

[21] FORSCHUNGSZENTRUM JULICH, INST KERNPHYS, JULICH, GERMANY

[22] KOREA UNIV, SEOUL 136701, SOUTH KOREA

[23] LOUISIANA STATE UNIV, DEPT PHYS & ASTRON, BATON ROUGE, LA 70803 USA

[24] UNIV AUTONOMA MADRID, DEPT FIS TEOR, E-28049 MADRID, SPAIN

[25] UNIV MANITOBA, DEPT PHYS, WINNIPEG, MB R3T 2N2, CANADA

[26] MCGILL UNIV, DEPT PHYS, MONTREAL, PQ, CANADA

[27] MOSCOW PHYS ENGN INST, MOSCOW, RUSSIA

[28] MOSCOW MV LOMONOSOV STATE UNIV, INST NUCL PHYS, MOSCOW, RUSSIA

[29] NIKHEF, AMSTERDAM, NETHERLANDS

[30] UNIV AMSTERDAM, AMSTERDAM, NETHERLANDS

[31] OHIO STATE UNIV, DEPT PHYS, COLUMBUS, OH 43210 USA

[32] UNIV OXFORD, DEPT PHYS, OXFORD, ENGLAND

[33] UNIV PADUA, DIPARTIMENTO FIS, I-35100 PADUA, ITALY

[34] IST NAZL FIS NUCL, PADUA, ITALY

[35] PENN STATE UNIV, DEPT PHYS, UNIVERSITY PK, PA 16802 USA

[36] UNIV ROMA LA SAPIENZA, DIPARTIMENTO FIS, I-00185 ROME, ITALY

[37] IST NAZL FIS NUCL, ROME, ITALY

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

[39] UNIV CALIF SANTA CRUZ, SANTA CRUZ, CA 95064 USA

[40] UNIV GESAMTHSCH SIEGEN, FACHBEREICH PHYS, W-5900 SIEGEN, GERMANY

[41] TEL AVIV UNIV, SCH PHYS, IL-69978 TEL AVIV, ISRAEL

[42] UNIV TOKYO, INST NUCL STUDY, TOKYO, JAPAN

[43] TOKYO METROPOLITAN UNIV, DEPT PHYS, TOKYO, JAPAN

[44] IST NAZL FIS NUCL, I-10125 TURIN, ITALY

[45] UNIV TURIN, DIPARTIMENTO FIS SPERIMENTALE, I-10124 TURIN, ITALY

[46] UNIV TURIN, FAC SCI 2, ALESSANDRIA, ITALY

[47] IST NAZL FIS NUCL, ALESSANDRIA, ITALY

[48] UNIV TORONTO, DEPT PHYS, TORONTO, ON M5S 1A1, CANADA

[49] UCL, DEPT PHYS & ASTRON, LONDON, ENGLAND

[50] VIRGINIA POLYTECH INST & STATE UNIV, DEPT PHYS, BLACKSBURG, VA 24061 USA

来源：

PHYSICS LETTERS B | 1995年 / 363卷 / 03期

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/0370-2693(95)01284-W

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Jet production in deep inelastic scattering for 120 < Q(2) < 3600 GeV2 has been studied using data from an integrated luminosity of 3.2 pb(-1) collected with the ZEUS detector at HERA. Jets are identified with the JADE algorithm. A cut on the angular distribution of parton emission in the gamma(8)-parton centre-of-mass system minimises the experimental and theoretical uncertainties in the determination of the jet rates. The jet rates, when compared to O(alpha(s)(2)) perturbative QCD calculations, allow a precise determination of alpha(s)(Q) in three Q(2)-intervals. The values are consistent with a running of alpha(s)(Q), as expected from QCD. Extrapolating to Q = M(Z0) yields alpha(s)(M(Z0)) = 0.117 +/- 0.005 (stat)(-0.005)(+0.004) (syst(exp)) +/- 0.007 (syst(theory)).

引用

页码：201 / 216

页数：16

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