EXTRACTION OF THE GLUON DENSITY OF THE PROTON AT X

被引：97

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

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

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, COSENZA, ITALY

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

[9] INST NUCL PHYS, KRAKOW, POLAND

[10] ACAD MIN & MET, FAC PHYS & NUCL TECHNIQUES, 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, LAB NAZL FRASCATI, 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, 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 52242 USA

[23] KFA JULICH, INST KERNPHYS, 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 H, 1009 DB 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, 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 / 345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)00021-C

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The gluon momentum density xg(x, Q(2)) of the proton was extracted at Q(2) = 20 GeV2 for small values of x between 4 x 10(-4) and 10(-2) from the scaling violations of the proton structure function F-2 measured recently by ZEUS in deep inelastic neutral current ep scattering at HERA. The extraction was performed in two ways. Firstly, using a global NLO fit to the ZEUS data on F-2 at low x constrained by measurements from NMC at larger x; and secondly using published approximate methods for the solution of the GLAP QCD evolution equations. Consistent results are obtained. A substantial increase of the gluon density is found at small x in comparison with the NMC result obtained at larger values of x.

引用

页码：576 / 588

页数：13

共 45 条

[11] DETERMINATION OF ALPHA(S) AND THE GLUON DISTRIBUTION USING DIRECT PHOTON PRODUCTION IN (P)OVER-BAR-P AND PP COLLISIONS [J].

BALLOCCHI, G ;

BERNASCONI, A ;

BREEDON, RE ;

CAMILLERI, L ;

COOL, RL ;

COX, PT ;

CUSHMAN, P ;

DICK, L ;

DUKES, EC ;

GABIOUD, B ;

GAILLE, F ;

GIACOMELLI, P ;

HUBBARD, D ;

JEANNERET, JB ;

JOSEPH, C ;

KUBISCHTA, W ;

LOUDE, JF ;

MALAMUD, E ;

MOREL, C ;

OBERSON, P ;

OVERSETH, OE ;

PAGES, JL ;

PERROUD, JP ;

RUEGGER, D ;

RUSACK, RW ;

SINGH, V ;

SNOW, GR ;

SOZZI, G ;

STEINER, D ;

STUDER, L ;

TRAN, MT ;

VACCHI, A ;

VALENTI, G ;

WERLEN, M .

PHYSICS LETTERS B, 1993, 317 (1-2) :250-256

[12] STRUCTURE FUNCTIONS OF BOUND NUCLEONS - FROM THE EMC EFFECT TO NUCLEAR SHADOWING [J].

BARONE, V ;

GENOVESE, M ;

NIKOLAEV, NN ;

PREDAZZI, E ;

ZAKHAROV, BG .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1993, 58 (04) :541-558

[13] A HIGH STATISTICS MEASUREMENT OF THE PROTON STRUCTURE FUNCTIONS F2(X,Q2) AND R FROM DEEP INELASTIC MUON SCATTERING AT HIGH Q2 [J].

BENVENUTI, AC ;

BOLLINI, D ;

BRUNI, G ;

CAMPORESI, T ;

MONARI, L ;

NAVARRIA, FL ;

ARGENTO, A ;

CVACH, J ;

LOHMANN, W ;

PIEMONTESE, L ;

ZAVADA, P ;

AKHUNDOV, AA ;

GENCHEV, VI ;

GOLUTVIN, IA ;

KIRYUSHIN, YT ;

KRIVOKHIZHIN, VG ;

KUKHTIN, VV ;

LEDNICKY, R ;

NEMECEK, S ;

REIMER, P ;

SAVIN, IA ;

SMIRNOV, GI ;

STRACHOTA, J ;

SULTANOV, G ;

TODOROV, P ;

VOLODKO, AG ;

JAMNIK, D ;

KOPP, R ;

MEYERBERKHOUT, U ;

STAUDE, A ;

TEICHERT, KM ;

TIRLER, R ;

VOSS, R ;

ZUPANCIC, C ;

CRIBIER, M ;

FELTESSE, J ;

MILSZTAJN, A ;

OURAOU, A ;

RICHHENNION, P ;

SACQUIN, Y ;

SMADJA, G ;

VIRCHAUX, M .

PHYSICS LETTERS B, 1989, 223 (3-4) :485-489

[14] A COMPARISON OF THE STRUCTURE FUNCTIONS F2 OF THE PROTON AND THE NEUTRON FROM DEEP INELASTIC MUON SCATTERING AT HIGH Q2 [J].

BENVENUTI, AC ;

BOLLINI, D ;

BRUNI, G ;

NAVARRIA, FL ;

LOHMANN, W ;

VOSS, R ;

GENCHEV, VI ;

KRIVOKHIZHIN, VG ;

LEDNICKY, R ;

NEMECEK, S ;

SAVIN, IA ;

SMIRNOV, GI ;

SULTANOV, G ;

MEYERBERKHOUT, U ;

STAUDE, A ;

TEICHERT, KM ;

ZUPANCIC, C ;

MILSZTAJN, A ;

OURAOU, A ;

SMADJA, G ;

VIRCHAUX, M .

PHYSICS LETTERS B, 1990, 237 (3-4) :599-604

[15] EXPERIMENTAL-STUDY OF THE NUCLEON STRUCTURE FUNCTIONS AND OF THE GLUON DISTRIBUTION FROM CHARGED-CURRENT NEUTRINO AND ANTI-NEUTRINO INTERACTIONS [J].

BERGSMA, F ;

DORENBOSCH, J ;

JONKER, M ;

NIEUWENHUIS, C ;

UDO, F ;

ALLABY, JV ;

AMALDI, U ;

BARBIELLINI, G ;

BARONE, L ;

CAPONE, A ;

FLEGEL, W ;

METCALF, M ;

PANMAN, J ;

WINTER, K ;

ABT, I ;

ASPIAZU, J ;

BUSSER, FW ;

DAUMANN, H ;

GALL, PD ;

METZ, E ;

NIEBERGALL, F ;

RANITZSCH, KH ;

STAHELIN, P ;

GORBUNOV, P ;

GRIGORIEV, E ;

KAFTANOV, V ;

KHOVANSKY, V ;

ROSANOV, A ;

BARONCELLI, A ;

BORGIA, B ;

BOSIO, C ;

DIEMOZ, M ;

DORE, U ;

FERRONI, F ;

LONGO, E ;

MONACELLI, P ;

DENOTARISTEFANI, F ;

PISTILLI, P ;

SANTONI, C ;

TORTORA, L ;

VALENTE, V .

PHYSICS LETTERS B, 1983, 123 (3-4) :269-274

[16] CTEQ PARTON DISTRIBUTIONS AND FLAVOR DEPENDENCE OF SEA QUARKS [J].

BOTTS, J ;

MORFIN, JG ;

OWENS, JF ;

QIU, JW ;

TUNG, WK ;

WEERTS, H .

PHYSICS LETTERS B, 1993, 304 (1-2) :159-166

[17] MEASUREMENT OF THE LONGITUDINAL STRUCTURE-FUNCTION AND THE SMALL XI-GLUON DENSITY OF THE PROTON [J].

COOPERSARKAR, AM ;

INGELMAN, G ;

LONG, KR ;

ROBERTS, RG ;

SAXON, DH .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1988, 39 (02) :281-290

[18] EVOLUTION OF PARTON DENSITIES BEYOND LEADING ORDER - THE NON-SINGLET CASE [J].

CURCI, G ;

FURMANSKI, W ;

PETRONZIO, R .

NUCLEAR PHYSICS B, 1980, 175 (01) :27-92

[19] OBSERVATION OF EVENTS WITH A LARGE RAPIDITY GAP IN DEEP-INELASTIC SCATTERING AT HERA [J].

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 .

PHYSICS LETTERS B, 1993, 315 (3-4) :481-493

[20] OBSERVATION OF JET PRODUCTION IN DEEP-INELASTIC SCATTERING WITH A LARGE RAPIDITY GAP AT HERA [J].

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 .

PHYSICS LETTERS B, 1994, 332 (1-2) :228-243

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