MEASUREMENT OF THE PROTON STRUCTURE-FUNCTION F2 FROM THE 1993 HERA DATA

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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
FRASCONI, F
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
FELD, L
FREY, A
GEERTS, M
GEITZ, G
机构
[1] UNIV BOLOGNA, BOLOGNA, ITALY
[2] INFN BOLOGNA, 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] INFN, COSENZA, ITALY
[8] COLUMBIA UNIV, NEVIA LABS, IRVINGTON, NY USA
[9] INST NUCL PHYS, KRAKOW, POLAND
[10] ACAD MIN & MET CRACOW, FAC PHYS & NUCL TECH, 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] INFN, FLORENCE, ITALY
[16] INFN, NAZL FRASCATI LAB, 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 2, W-2000 HAMBURG, GERMANY
[20] UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED, HIGH ENERGY NUCL PHYS GRP, LONDON, ENGLAND
[21] UNIV IOWA, DEPT PHYS & ASTRON, IOWA CITY, IA 52242 USA
[22] FORSCHUNGSZENTRUM JULICH, FORSCHUNGSZENTRUM, INST KERNPHYS, W-5170 JULICH, GERMANY
[23] KOREA UNIV, SEOUL 136701, SOUTH KOREA
[24] LOUISIANA STATE UNIV, DEPT PHYS & ASTRON, BATON ROUGE, LA 70803 USA
[25] UNIV AUTONOMA MADRID, DEPT FIS TEOR, MADRID, SPAIN
[26] UNIV MANITOBA, DEPT PHYS, WINNIPEG, MB R3T 2N2, CANADA
[27] MCGILL UNIV, DEPT PHYS, MONTREAL, PQ, CANADA
[28] MOSCOW PHYS ENGN INST, MOSCOW, RUSSIA
[29] MOSCOW MV LOMONOSOV STATE UNIV, INST NUCL PHYS, MOSCOW, RUSSIA
[30] NIKHEF H, 1009 DB AMSTERDAM, NETHERLANDS
[31] UNIV AMSTERDAM, AMSTERDAM, NETHERLANDS
[32] OHIO STATE UNIV, DEPT PHYS, COLUMBUS, OH 43210 USA
[33] UNIV OXFORD, DEPT PHYS, OXFORD, ENGLAND
[34] UNIV PADUA, DIPARTIMENTO FIS, PADUA, ITALY
[35] INFN, PADUA, ITALY
[36] PENN STATE UNIV, DEPT PHYS, UNIVERSITY PK, PA 16802 USA
[37] UNIV ROMA LA SAPIENZA, DIPARTIMENTO FIS, I-00185 ROME, ITALY
[38] INFN, ROME, ITALY
[39] RUTHERFORD APPLETON LAB, DIDCOT OX11 0QX, OXON, ENGLAND
[40] UNIV CALIF SANTA CRUZ, SANTA CRUZ, CA 95064 USA
[41] UNIV GESAMTHSCH SIEGEN, FACHBEREICH PHYS, W-5900 SIEGEN, GERMANY
[42] TEL AVIV UNIV, SCH PHYS, IL-69978 TEL AVIV, ISRAEL
[43] UNIV TOKYO, INST NUCL STUDY, TOKYO, JAPAN
[44] TOKYO METROPOLITAN UNIV, DEPT PHYS, TOKYO, JAPAN
[45] UNIV TURIN, DIPARTIMENTO FIS SPERIMENTALE, TURIN, ITALY
[46] IST NAZL FIS NUCL, I-10125 TURIN, ITALY
[47] UNIV TORINO, FAC SCI 2, ALESANDRIA, ITALY
[48] IST NAZL FIS NUCL, ALESANDRIA, ITALY
[49] UNIV TORONTO, DEPT PHYS, TORONTO, ON, CANADA
[50] UCL, DEPT PHYS & ASTRON, LONDON, ENGLAND
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O412 [相对论、场论]; O572.2 [粒子物理学];
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摘要
The ZEUS detector has been used to measure the proton structure function F-2. During 1993 HERA collided 26.7 GeV electrons on 820 GeV protons. The data sample corresponds to an integrated luminosity of 0.54 pb(-1), representing a twenty fold increase in statistics compared to that of 1992. Results are presented for 7 < Q(2) < 10(4) GeV2 and x values as low as 3 x 10(-4). The rapid rise in F-2 as x decreases observed previously is now studied in greater detail and persists for Q(2) values up to 500 GeV2.
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页码:379 / 398
页数:20
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