FIRST EVIDENCE OF HARD SCATTERING PROCESSES IN SINGLE TAGGED GAMMA-GAMMA-COLLISIONS

被引：16

作者：

ABREU, P

ADAM, W

ADYE, T

AGASI, E

AJINENKO, I

ALEKSAN, R

ALEKSEEV, GD

ALLPORT, PP

ALMEHED, S

ALMEIDA, FML

ALVSVAAG, SJ

AMALDI, U

ANDREAZZA, A

ANDRIEUX, ML

ANTILOGUS, P

APEL, WD

ARNOUD, Y

ASMAN, B

AUGUSTIN, JE

AUGUSTINUS, A

BAILLON, P

BAMBADE, P

BARAO, F

BARATE, R

BARBIELLINI, G

BARDIN, DY

BARKER, GJ

BARONCELLI, A

BARRING, O

BARRIO, JA

BARTL, W

BATES, MJ

BATTAGLIA, M

BAUBILLIER, M

BAUDOT, J

BECKS, KH

BEGALLI, M

BEILLIERE, P

BELTRAN, P

BENVENUTI, AC

BERGGREN, M

BERTRAND, D

BIANCHI, F

BIGI, M

BILENKY, MS

BILLOIR, P

BJARNE, J

BLOCH, D

BLYTH, S

BOCCI, V

机构：

[1] IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011

[2] IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011

[3] UNIV INSTELLING ANTWERP,DEPT PHYS,B-2610 WILRIJK,BELGIUM

[4] VUB,ULB,IIHE,B-1050 BRUSSELS,BELGIUM

[5] UNIV ETAT MONS,FAC SCI,B-7000 MONS,BELGIUM

[6] UNIV ATHENS,PHYS LAB,GR-10680 ATHENS,GREECE

[7] UNIV BERGEN,DEPT PHYS,N-5007 BERGEN,NORWAY

[8] UNIV BOLOGNA,DIPARTIMENTO FIS,I-40126 BOLOGNA,ITALY

[9] INFN,I-40126 BOLOGNA,ITALY

[10] COLL FRANCE,PHYS CORPUSCULAIRE LAB,CNRS,IN2P3,F-75231 PARIS 05,FRANCE

[11] CERN,CH-1211 GENEVA 23,SWITZERLAND

[12] UNIV STRASBOURG 1,CTR RECH NUCL,CNRS,IN2P3,F-67037 STRASBOURG,FRANCE

[13] NATL CTR SCI RES DEMOKRITOS,INST NUCL PHYS,GR-15310 ATHENS,GREECE

[14] ACAD SCI CZECH REPUBL,INST PHYS,FZU,DIV HIGH ENERGY PHYS,CR-18040 PRAGUE 8,CZECH REPUBLIC

[15] UNIV GENOA,DIPARTIMENTO FIS,I-16146 GENOA,ITALY

[16] IST NAZL FIS NUCL,I-16146 GENOA,ITALY

[17] UNIV GRENOBLE 1,INST NUCL SCI,CNRS,IN2P3,F-38026 GRENOBLE,FRANCE

[18] SEFT,HIGH ENERGY PHYS RES CTR,SF-00014 HELSINKI,FINLAND

[19] JOINT INST NUCL RES,DUBNA 101000,RUSSIA

[20] UNIV KARLSRUHE,INST EXPTL KERNPHYS,D-76128 KARLSRUHE,GERMANY

[21] INST NUCL PHYS,HIGH ENERGY PHYS LAB,PL-30055 KRAKOW 30,POLAND

[22] CTR BRASILEIRO PESQUISAS FIS,BR-22290 RIO JANEIRO,BRAZIL

[23] UNIV PARIS 11,ACCELERATEUR LINEAIRE LAB,F-91405 ORSAY,FRANCE

[24] UNIV LANCASTER,SCH PHYS & MAT,LANCASTER LA1 4YB,ENGLAND

[25] UNIV LIVERPOOL,DEPT PHYS,LIVERPOOL L69 3BX,MERSEYSIDE,ENGLAND

[26] UNIV PARIS 06,LPNHE,CNRS,IN2P3,F-75252 PARIS 05,FRANCE

[27] UNIV PARIS 07,LPNHE,CNRS,IN2P3,F-75252 PARIS 05,FRANCE

[28] LUND UNIV,DEPT PHYS,S-22363 LUND,SWEDEN

[29] UNIV LYON 1,IPNL,CNRS,IN2P3,F-69622 VILLEURBANNE,FRANCE

[30] UNIV COMPLUTENSE,E-28040 MADRID,SPAIN

[31] UNIV AIX MARSEILLE 2,CPP,CNRS,IN2P3,F-13288 MARSEILLE 09,FRANCE

[32] UNIV MILAN,DIPARTIMENTO FIS,I-20133 MILAN,ITALY

[33] IST NAZL FIS NUCL,I-20133 MILAN,ITALY

[34] NIELS BOHR INST,DK-2100 COPENHAGEN O,DENMARK

[35] CHARLES UNIV,MFF,CTR NUCL,NC,AREAL MFF,CR-18000 PRAGUE 8,CZECH REPUBLIC

[36] NIKHEF H,1009 DB AMSTERDAM,NETHERLANDS

[37] NATL TECH UNIV ATHENS,DEPT PHYS,GR-15773 ATHENS,GREECE

[38] UNIV OSLO,DEPT PHYS,N-1000 OSLO 3,NORWAY

[39] UNIV OVIEDO,DPT FIS,E-33006 OVIEDO,SPAIN

[40] UNIV OXFORD,DEPT PHYS,OXFORD OX1 3RH,ENGLAND

[41] UNIV PADUA,DIPARTIMENTO FIS,I-35131 PADUA,ITALY

[42] IST NAZL FIS NUCL,I-35131 PADUA,ITALY

[43] PONTIFICIA UNIV CATOLICA RIO DE JANEIRO,DEPT FIS,BR-22453 RIO JANEIRO,BRAZIL

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

[45] UNIV ROMA TOR VERGATA,DIPARTIMENTO FIS,I-00173 ROME,ITALY

[46] IST NAZL FIS NUCL,I-00173 ROME,ITALY

[47] CENS,DSM,DAPNIA,F-91191 GIF SUR YVETTE,FRANCE

[48] IST NAZL FIS NUCL,IST SUPER SANITA,I-00161 ROME,ITALY

[49] UNIV CANTABRIA,CSIC,CEAFM,CICYT,E-39006 SANTANDER,SPAIN

[50] INST HIGH ENERGY PHYS,PROTVINO,RUSSIA

来源：

PHYSICS LETTERS B | 1995年 / 342卷 / 1-4期

关键词：

D O I：

10.1016/0370-2693(94)01522-E

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

For the first time, multihadronic production from single tagged gamma gamma collisions has been studied, where one of the scattered leptons was tagged at very low virtual photon absolute mass squared ([Q(2)] = 0.06 (GeV/c(2))(2)). Data collected during 1991 and 1992 in the DELPHI experiment at LEP are shown to agree well with predictions which included the non-perturbative vector meson dominance model in which the interacting photons are assumed to have converted into a vector meson (rho, omega or pi), a quark-parton model which describes direct photon interactions and a QCD-based model which considers the photon to have quark and gluon structure functions. Five different parametrizations of these structure functions were used and the predictions compared with the data. This study confirms recent results from no-tag experiments in requiring a QCD-based component to successfully describe the data, indicating that the photon has a significant partonic content.

引用

页码：402 / 416

页数：15

共 34 条

[1]

Aarnio P, 1991, NUCL INSTRUM METH A, V303, P233

[2] PARAMETRIZATION OF PARTON DISTRIBUTIONS IN THE PHOTON [J].

ABRAMOWICZ, H ;

CHARCHULA, K ;

LEVY, A .

PHYSICS LETTERS B, 1991, 269 (3-4) :458-464

[3] MEASUREMENT OF INCLUSIVE LAMBDA PRODUCTION IN ELECTRON-POSITRON INTERACTIONS AT THE UPSILON ENERGIES [J].

BLINOV, AE ;

BLINOV, VE ;

BONDAR, AE ;

BUKIN, AD ;

GROSHEV, VR ;

KLIMENKO, SG ;

ONUCHIN, AP ;

PANIN, VS ;

PROTOPOPOV, IY ;

SHAMOV, AG ;

SIDOROV, VA ;

SKOVPEN, YI ;

SKRINSKY, AN ;

TAYURSKY, VA ;

TELNOV, VI ;

TIKHONOV, YA ;

TUMAIKIN, GM ;

UNDRUS, AE ;

VOROBIOV, AI ;

ZHILICH, VN .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1994, 62 (03) :367-370

[4] MEASUREMENT OF ETA(C) PRODUCTION IN UNTAGGED 2-PHOTON COLLISIONS AT LEP [J].

ADRIANI, O ;

AGUILARBENITZ, M ;

AHLEN, S ;

ALCARAZ, J ;

ALOISIO, A ;

ALVERSON, G ;

ALVIGGI, MG ;

AMBROSI, G ;

AN, Q ;

ANDERHUB, H ;

ANDERSON, AL ;

ANDREEV, VP ;

ANGELESCU, T ;

ANTONOV, L ;

ANTREASYAN, D ;

ARCE, P ;

AREFIEV, A ;

ATAMANCHUK, A ;

AZEMOON, T ;

AZIZ, T ;

BABA, PVKS ;

BAGNAIA, P ;

BAKKEN, JA ;

BALL, RC ;

BANERJEE, S ;

BAO, J ;

BARILLERE, R ;

BARONE, L ;

BASCHIROTTO, A ;

BATTISTON, R ;

BAY, A ;

BECATTINI, F ;

BECHTLUFT, J ;

BECKER, R ;

BECKER, U ;

BEHNER, F ;

BEHRENS, J ;

BENCZE, GL ;

BERDUGO, J ;

BERGES, P ;

BERTUCCI, B ;

BETEV, BL ;

BIASINI, M ;

BILAND, A ;

BILEI, GM ;

BIZZARRI, R ;

BLAISING, JJ ;

BOBBINK, GJ ;

BOCK, R ;

BOHM, A .

PHYSICS LETTERS B, 1993, 318 (03) :575-582

[5] OBSERVATION OF SCALING OF THE PHOTON STRUCTURE-FUNCTION F-2-GAMMA AT LOW Q2 [J].

AIHARA, H ;

ALSTONGARNJOST, M ;

AVERY, RE ;

BARBAROGALTIERI, A ;

BARKER, AR ;

BARNES, AV ;

BARNETT, BA ;

BAUER, DA ;

BENGTSSON, HU ;

BINTINGER, DL ;

BOBBINK, GJ ;

BOLOGNESE, TS ;

BROSS, AD ;

BUCHANAN, CD ;

BUIJS, A ;

CALDWELL, DO ;

CLARK, AR ;

COWAN, GD ;

CRANE, DA ;

DAHL, OI ;

DERBY, KA ;

EASTMAN, JJ ;

EBERHARD, PH ;

EDBERG, TK ;

EISNER, AM ;

ENOMOTO, R ;

ERNE, FC ;

FUJII, T ;

GARY, JW ;

GORN, W ;

HAUPTMAN, JM ;

HOFMANN, W ;

HUTH, JE ;

HYLEN, J ;

KAMAE, T ;

KAYE, HS ;

KEES, KH ;

KENNEY, RW ;

KERTH, LT ;

KO, W ;

KODA, RI ;

KOFLER, RR ;

KWONG, KK ;

LANDER, RL ;

LANGEVELD, WGJ ;

LAYTER, JG ;

LINDE, FL ;

LINDSEY, CS ;

LOKEN, SC ;

LU, A .

PHYSICAL REVIEW LETTERS, 1987, 58 (02) :97-100

[6] MEASUREMENT OF THE TOTAL HADRONIC CROSS-SECTION IN TAGGED GAMMA-GAMMA REACTIONS [J].

AIHARA, H ;

ALSTONGARNJOST, M ;

AVERY, RE ;

BARKER, AR ;

BAUER, DA ;

BAY, A ;

BELCINSKI, R ;

BINGHAM, HH ;

BLOOM, ED ;

BUCHANAN, CD ;

CALDWELL, DO ;

CHAO, HY ;

CHUN, SB ;

CLARK, AR ;

COWAN, GD ;

CRANE, DA ;

DAHL, OI ;

ERNE, FC ;

FAIRFIELD, KH ;

FRIDMAN, A ;

GODFREY, G ;

HAUPTMAN, JM ;

HO, C ;

HOFMANN, W ;

KAMAE, T ;

KENNEY, RW ;

KHACHERYAN, S ;

KOFLER, RR ;

LAMBERT, DJ ;

LANGEVELD, WGJ ;

LAYTER, JG ;

LIN, WT ;

LINDE, FL ;

LOKEN, SC ;

LU, A ;

LYNCH, GR ;

LYS, JE ;

MADARAS, RJ ;

MAGNUSON, BD ;

MARSISKE, H ;

MASEK, GE ;

MATHIS, LG ;

MAXFIELD, SJ ;

MCNEIL, RR ;

MILLER, ES ;

NICOL, NA ;

NYGREN, DR ;

ODDONE, PJ ;

OH, H ;

OYANG, YT .

PHYSICAL REVIEW D, 1990, 41 (09) :2667-2674

[7]

AKERS R, 1994, Z PHYS C, V61, P119

[8] A SILICON TUNGSTEN ELECTROMAGNETIC CALORIMETER FOR LEP [J].

ALMEHED, S .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1991, 305 (02) :320-330

[9]

ALTHOFF M, 1986, Z PHYS C PART FIELDS, V31, P527, DOI 10.1007/BF01551073

[10]

BEHREND HJ, 1991, Z PHYS C PART FIELDS, V51, P365, DOI 10.1007/BF01548558

← 1 2 3 4 →