OBSERVATION OF JET PRODUCTION IN DEEP-INELASTIC SCATTERING WITH A LARGE RAPIDITY GAP AT HERA

被引：98

作者：

DERRICK, M

KRAKAUER, D

MAGILL, S

MUSGRAVE, B

REPOND, J

SCHLERETH, J

STANEK, R

TALAGA, RL

THRON, J

ARZARELLO, F

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

CIRALLI, F

CONTIN, A

DAURIA, S

DELPAPA, C

FRASCONI, F

GIUSTI, P

IACOBUCCI, G

LAURENTI, G

LEVI, G

MACCARRONE, G

MARGOTTI, A

MASSAM, T

NANIA, R

NEMOZ, C

PALMONARI, F

SARTORELLI, G

TIMELLINI, R

GARCIA, YZ

ZICHICHI, A

BARGENDE, A

CRITTENDEN, J

DESCH, K

DIEKMANN, B

DOEKER, T

FELD, L

FREY, A

GEERTS, M

机构：

[1] INFN, BOLOGNA, ITALY

[2] INFN, COSENZA, ITALY

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

[4] STANISLAW STASZIC UNIV MIN & MET, FAC PHYS & NUCL TECHNIQUES, PL-30059 KRAKOW, POLAND

[5] DESY ZEUTHEN, INST HOCHENERGIEPHYS, ZEUTHEN, GERMANY

[6] INFN, FLORENCE, ITALY

[7] INFN, LAB NAZL FRASCATI, FRASCATI, ITALY

[8] UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED, HIGH ENERGY NUCL PHYS GRP, LONDON SW7 2AZ, ENGLAND

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

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

[11] MOSCOW ENGN PHYS INST, MOSCOW, RUSSIA

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

[13] NIKHEF, AMSTERDAM, NETHERLANDS

[14] INFN, PADUA, ITALY

[15] INFN, ROME, ITALY

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

[17] UNIV GESAMTHSCH SIEGEN, FACHBEREICH PHYS, W-5900 SIEGEN 21, GERMANY

[18] UNIV TOKYO, INST NUCL STUDY, TOKYO 113, JAPAN

[19] INFN, TURIN, ITALY

[20] INFN, ALESSANDRIA, ITALY

[21] UNIV WARSAW, INST EXPTL PHYS, PL-00325 WARSAW, POLAND

[22] INST NUCL STUDIES, WARSAW, POLAND

[23] YORK UNIV, DEPT PHYS, N YORK, ON, CANADA

[24] UNIV WISCONSIN, DEPT PHYS, MADISON, WI 53706 USA

[25] WEIZMANN INST SCI, DEPT NUCL PHYS, IL-76100 REHOVOT, ISRAEL

[26] IROE, FLORENCE, ITALY

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

[28] UNIV BRISTOL, HH WILLS PHYS LAB, BRISTOL BS8 1TL, AVON, ENGLAND

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

[30] INST NUCL PHYS, PL-31342 KRAKOW, POLAND

[31] JAGIELLONIAN UNIV, PL-31007 KRAKOW, POLAND

[32] DESY, W-2000 HAMBURG 52, GERMANY

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

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

[35] UNIV GLASGOW, DEPT PHYS & ASTRON, GLASGOW G12 8QQ, SCOTLAND

[36] UNIV HAMBURG, INST EXPTL PHYS 1, W-2000 HAMBURG 13, GERMANY

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

[38] UNIV HAMBURG, INST EXPTL PHYS 2, W-2000 HAMBURG 13, GERMANY

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

[40] FORSCHUNGSZENTRUM JULICH, FORSCHUNGSZENTRUM, INST KERNPHYS, W-5170 JULICH 1, GERMANY

[41] KOREA UNIV, SEOUL, SOUTH KOREA

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

[43] UNIV AUTONOMA MADRID, DEPT FIS TEOR, MADRID 34, SPAIN

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

[45] MCGILL UNIV, DEPT PHYS, MONTREAL H3A 2T5, QUEBEC, CANADA

[46] UNIV AMSTERDAM, AMSTERDAM, NETHERLANDS

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

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

[49] TOKYO METROPOLITAN UNIV, DEPT PHYS, TOKYO 158, JAPAN

[50] UNIV PADUA, DEPT PHYS, I-35100 PADUA, ITALY

来源：

PHYSICS LETTERS B | 1994年 / 332卷 / 1-2期

基金：

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(94)90883-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Events with a large rapidity gap in deep inelastic scattering with Q2 greater-than-or-equal-to 10 GeV2 have been studied in the ZEUS detector. The properties of these events with W > 140 GeV are consistent with a leading twist diffractive production mechanism. In the laboratory frame, with E(T)jet greater-than-or-equal-to 4 GeV, 15% of the events are of the 1-jet type with negligible 2-jet production. The single jet is back-to-back in azimuth with the scattered electron. No energy flow is observed between the jet and the proton direction. With a lower jet transverse energy cut 2-jet production is observed both in the laboratory and the gamma*p centre-of-mass systems, demonstrating the presence of hard scattering in the virtual photon proton interactions that give rise to large rapidity gap events.

引用

页码：228 / 243

页数：16

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