EXCLUSIVE RHO(0) PRODUCTION IN DEEP-INELASTIC ELECTRON-PROTON SCATTERING AT HERA

被引：88

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

CRITTENDEN, J

DESCH, K

DIEKMANN, B

DOEKER, T

ECKERT, M

FELD, L

FREY, A

GEERTS, M

GROTHE, M

HARTMANN, H

机构：

[1] UNIV BOLOGNA, 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 1TL, AVON, ENGLAND

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

[6] UNIV CALABRIA, DEPT PHYS, I-87036 COSENZA, ITALY

[7] IST NAZL FIS NUCL, I-87036 COSENZA, ITALY

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

[9] INST NUCL PHYS, KRAKOW, POLAND

[10] AGH UNIV SCI & TECHNOL, FAC PHYS & NUC TECHN, KRAKOW, POLAND

[11] JAGIELLONIAN UNIV, DEPT PHYS, KRAKOW, POLAND

[12] DESY, W-2000 HAMBURG, GERMANY

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

[14] UNIV FLORENCE, FLORENCE, ITALY

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

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

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

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

[19] UNIV HAMBURG, INST EXPTL PHYS 1, D-20246 HAMBURG, GERMANY

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

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

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

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

[24] KOREA UNIV, SEOUL 136701, SOUTH KOREA

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

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

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

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

[29] MOSCOW PHYS ENGN INST, MOSCOW, RUSSIA

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

[31] NIKHEF, AMSTERDAM, NETHERLANDS

[32] UNIV AMSTERDAM, AMSTERDAM, NETHERLANDS

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

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

[35] UNIV PADUA, DIPARTIMENTO FIS, PADUA, ITALY

[36] IST NAZL FIS NUCL, I-35100 PADUA, ITALY

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

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

[39] IST NAZL FIS NUCL, ROME, ITALY

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

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

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

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

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

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

[46] UNIV TURIN, DIPARTIMENTO FIS SPERIMENTALE, TURIN, ITALY

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

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

[49] IST NAZL FIS NUCL, ALESSANDRIA, ITALY

[50] UNIV TORONTO, DEPT PHYS, TORONTO, ON, CANADA

来源：

PHYSICS LETTERS B | 1995年 / 356卷 / 04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)00879-P

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The exclusive production of rho(0) mesons in deep inelastic electron-proton scattering has been studied using the ZEUS detector Cross sections have been measured in the range 7 < Q(2) < 25 GeV2 for gamma*p centre of mass (c.m.) energies from 40 to 130 GeV. The gamma*p --> rho(0)p cross section exhibits a Q(-(4.2+/-0.8-0.5+14)) dependence and bath longitudinally and transversely polarised rho(0)'s are observed. The gamma*p --> rho(0)p cross section rises strongly with increasing c.m. energy, when compared with NMC data at lower energy, which cannot be explained by production through soft pomeron exchange. The data are compared with perturbative QCD calculations where the rise in the cross section reflects the increase in the gluon density at low x.

引用

页码：601 / 616

页数：16

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