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

被引：318

作者：

DERRICK, M

KRAKAUER, D

MAGILL, S

MUSGRAVE, B

REPOND, J

REPOND, S

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

LIN, Q

LISOWSKI, B

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

FREY, A

机构：

[1] INFN BOLOGNA, BOLOGNA, ITALY

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

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

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

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

[6] INFN, COSENZA, ITALY

[7] UNIV CALABRIA, DEPT PHYS, COSENZA, ITALY

[8] COLUMBIA UNIV, NEVIS LABS, IRVINGTON ON HUDSON, NY USA

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

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

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

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

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

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

[15] INFN, FLORENCE, ITALY

[16] UNIV FREIBURG, INST PHYS, W-7800 FREIBURG, GERMANY

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

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

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

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

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

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

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

[24] KOREA UNIV, SEOUL, SOUTH KOREA

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

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

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

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

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

[30] NIKHEF AMSTERDAM, AMSTERDAM, NETHERLANDS

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

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

[33] INFN, PADUA, ITALY

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

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

[36] INFN, ROME, ITALY

[37] UNIV ROMA LA SAPIENZA, DIPARTIMENTO FIS, I-00185 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 21, GERMANY

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

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

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

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

[45] INFN, TURIN, ITALY

[46] UNIV TORONTO, DEPT PHYS, TORONTO M5S 1A1, ONTARIO, CANADA

[47] UNIV LONDON UNIV COLL, DEPT PHYS & ASTRON, LONDON WC1E 6BT, ENGLAND

[48] VIRGINIA POLYTECH INST & STATE UNIV, BLACKSBURG, VA 24061 USA

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

[50] INST NUCL STUDIES, WARSAW, POLAND

来源：

PHYSICS LETTERS B | 1993年 / 315卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(93)91645-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In deep inelastic, neutral current scattering of electrons and protons at square-root s = 296 GeV, we observe in the ZEUS detector events with a large rapidity gap in the hadronic final state. They occur in the region of small Bjorken x and are observed up to Q2 of 100 GeV2. They account for about 5% of the events with Q2 greater-than-or-equal-to 10 GeV2. Their general properties are inconsistent with the dominant mechanism of deep inelastic scattering, where color is transferred between the scattered quark and the proton remnant, and suggest that the underlying production mechanism is the diffractive dissociation of the virtual photon.

引用

页码：481 / 493

页数：13

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