MEASUREMENT OF THE CROSS-SECTION FOR PRODUCTION OF 2 ISOLATED PROMPT PHOTONS IN P(P)OVER-BAR COLLISIONS AT ROOT-S=1.8 TEV

被引：33

作者：

ABE, F

ALBROW, M

AMIDEI, D

ANWAYWIESE, C

APOLLINARI, G

ATAC, M

AUCHINCLOSS, P

AZZI, P

BADEN, AR

BACCHETTA, N

BADGETT, W

BAILEY, MW

BAMBERGER, A

DEBARBARO, P

BARBAROGALTIERI, A

BARNES, VE

BARNETT, BA

BAUER, G

BAUMANN, T

BEDESCHI, F

BEHRENDS, S

BELFORTE, S

BELLETTINI, G

BELLINGER, J

BENJAMIN, D

BENLLOCH, J

BENSINGER, J

BERETVAS, A

BERGE, JP

BERTOLUCCI, S

BIERY, K

BHADRA, S

BINKLEY, M

BISELLO, D

BLAIR, R

BLOCKER, C

BODEK, A

BOLOGNESI, V

BOOTH, AW

BOSWELL, C

BRANDENBURG, G

BROWN, D

BUCKLEYGEER, E

BUDD, HS

BUSETTO, G

BYONWAGNER, A

BYRUM, KL

CAMPAGNARI, C

CAMPBELL, M

CANER, A

机构：

[1] ARGONNE NATL LAB,ARGONNE,IL 60439

[2] BRANDEIS UNIV,WALTHAM,MA 02254

[3] UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024

[4] DUKE UNIV,DURHAM,NC 27706

[5] FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510

[6] IST NAZL FIS NUCL,LAB NAZL FRASCATI,FRASCATI,ITALY

[7] HARVARD UNIV,CAMBRIDGE,MA 02138

[8] UNIV ILLINOIS,URBANA,IL 61801

[9] JOHNS HOPKINS UNIV,BALTIMORE,MD 21218

[10] LAWRENCE BERKELEY LAB,BERKELEY,CA 94720

[11] MIT,CAMBRIDGE,MA 02139

[12] UNIV MICHIGAN,ANN ARBOR,MI 48109

[13] UNIV PADUA,IST NAZL FIS NUCL,SEZ PADOVA,I-35131 PADUA,ITALY

[14] UNIV PENN,PHILADELPHIA,PA 19104

[15] UNIV PISA,IST NAZL FIS NUCL,I-56100 PISA,ITALY

[16] SCUOLA NORMALE SUPER PISA,I-56100 PISA,ITALY

[17] PURDUE UNIV,W LAFAYETTE,IN 47907

[18] UNIV ROCHESTER,ROCHESTER,NY 14627

[19] ROCKEFELLER UNIV,NEW YORK,NY 10021

[20] RUTGERS STATE UNIV,PISCATAWAY,NJ 08854

[21] TEXAS A&M UNIV SYST,COLL STN,TX 77843

[22] UNIV TSUKUBA,TSUKUBA,IBARAKI 305,JAPAN

[23] TUFTS UNIV,MEDFORD,MA 02155

[24] UNIV WISCONSIN,MADISON,WI 53706

[25] UNIV CHICAGO,CHICAGO,IL 60637

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.70.2232

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present measurements from events with two isolated prompt photons in ppBAR collisions at square-root s=1.8 TeV. The differential cross section, measured as a function of transverse momentum (P(T)) of each photon, is about 3 times what next-to-leading-order QCD calculations predict. The cross section for photons with P(T) in the range 10-19 GeV is 86 +/- 27(stat)-23(+32)(syst) pb. We also study the correlation between the two photons in both azimuthal angle and P(T). The magnitude of the vector sum of the transverse momenta of both photons, K(T)=\P(T1) + P(T2)\, has a mean value of [K(T)]=5.1 +/- 1.1 GeV.

引用

页码：2232 / 2236

页数：5

共 11 条

[1] MEASUREMENT OF THE ISOLATED PROMPT PHOTON CROSS-SECTION IN (P)BAR-P COLLISIONS AT ROOT-S = 1.8 TEV [J].

ABE, F ;

AMIDEI, D ;

APOLLINARI, G ;

ATAC, M ;

AUCHINCLOSS, P ;

BADEN, AR ;

BACCHETTA, N ;

BAILEY, MW ;

BAMBERGER, A ;

DEBARBARO, P ;

BARNETT, BA ;

BARBAROGALTIERI, A ;

BARNES, VE ;

BAUMANN, T ;

BEDESCHI, F ;

BEHRENDS, S ;

BELFORTE, S ;

BELLETTINI, G ;

BELLINGER, J ;

BENJAMIN, D ;

BENSINGER, J ;

BERETVAS, A ;

BERGE, JP ;

BERTOLUCCI, S ;

BHADRA, S ;

BINKLEY, M ;

BISELLO, D ;

BLAIR, R ;

BLOCKER, C ;

BODEK, A ;

BOLOGNESI, V ;

BOOTH, AW ;

BOSWELL, C ;

BRANDENBURG, G ;

BROWN, D ;

BUCKLEYGEER, E ;

BUDD, HS ;

BUSETTO, G ;

BYONWAGNER, A ;

BYRUM, KL ;

CAMPAGNARI, C ;

CAMPBELL, M ;

CANER, A ;

CAREY, R ;

CARITHERS, W ;

CARLSMITH, D ;

CARROLL, JT ;

CASHMORE, R ;

CASTRO, A ;

CERVELLI, F .

PHYSICAL REVIEW LETTERS, 1992, 68 (18) :2734-2738

[2] THE CDF DETECTOR - AN OVERVIEW [J].

ABE, F ;

AMIDEI, D ;

APOLLINARI, G ;

ASCOLI, G ;

ATAC, M ;

AUCHINCLOSS, P ;

BADEN, AR ;

BARBAROGALTIERI, A ;

BARNES, VE ;

BARSOTTI, E ;

BEDESCHI, F ;

BELFORTE, S ;

BELLETTINI, G ;

BELLINGER, J ;

BENSINGER, J ;

BERETVAS, A ;

BERGE, P ;

BERTOLUCCI, S ;

BHADRA, S ;

BINKLEY, M ;

BLAIR, R ;

BLOCKER, C ;

BOFILL, J ;

BOOTH, AW ;

BRANDENBURG, G ;

BRENNER, A ;

BROWN, D ;

BYON, A ;

BYRUM, KL ;

CAMPBELL, M ;

CAREY, R ;

CARITHERS, W ;

CARLSMITH, D ;

CARROLL, JT ;

CASHMORE, R ;

CERVELLI, F ;

CHADWICK, K ;

CHAPIN, T ;

CHIARELLI, G ;

CHINOWSKY, W ;

CIHANGIR, S ;

CLINE, D ;

CONNOR, D ;

CONTRERAS, M ;

COOPER, J ;

CORDELLI, M ;

CURATOLO, M ;

DAY, C ;

DELFABBRO, R ;

DELLORSO, M .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1988, 271 (03) :387-403

[3] MEASUREMENT OF THE W-BOSON MASS IN 1.8-TEV PBARP COLLISIONS [J].

ABE, F .

PHYSICAL REVIEW D, 1991, 43 (07) :2070-2093

[4]

ABE F, 1992, FERMILABPUB9201E

[5] DIRECT PHOTON PRODUCTION AT THE CERN PROTON ANTIPROTON COLLIDER [J].

ALBAJAR, C ;

ALBROW, MG ;

ALLKOFER, OC ;

ASTBURY, A ;

AUBERT, B ;

AXON, T ;

BACCI, C ;

BACON, T ;

BAINS, N ;

BATLEY, JR ;

BAUER, G ;

BEINGESSNER, S ;

BETTINI, A ;

BEZAGUET, A ;

BONINO, R ;

BOS, K ;

BUCKLEY, E ;

BUSETTO, G ;

CATZ, P ;

CENNINI, P ;

CENTRO, S ;

CERADINI, F ;

CHARLTON, DG ;

CIAPETTI, G ;

CITTOLIN, S ;

CLARKE, D ;

CLINE, D ;

COCHET, C ;

COLAS, J ;

COLAS, P ;

CORDEN, M ;

COUGHLAN, JA ;

COX, G ;

DAU, D ;

DEBRION, JP ;

DEGIORGI, M ;

DELLANEGRA, M ;

DEMOULIN, M ;

DENEGRI, D ;

DICIACCIO, A ;

HEDO, FJD ;

DOBRZYNSKI, L ;

DORENBOSCH, J ;

DOWELL, JD ;

DUCHOVNI, E ;

EGGERT, K ;

EISENHANDLER, E ;

ELLIS, N ;

ERHARD, P ;

FAISSNER, H .

PHYSICS LETTERS B, 1988, 209 (2-3) :385-396

[6] PRODUCTION DYNAMICS OF HIGH-MASS MUON PAIRS [J].

ANTREASYAN, D ;

ATWOOD, W ;

BECKER, U ;

BELLETTINI, G ;

BRACCINI, PL ;

BRANSON, JG ;

BURGER, JD ;

CARBONARA, F ;

CARRARA, R ;

CASTALDI, R ;

CAVASINNI, V ;

CERVELLI, F ;

CHEN, M ;

CHIEFARI, G ;

DELPRETE, T ;

DRAGO, E ;

FUJISAKI, M ;

HODOUS, MF ;

LAGERLUND, T ;

LAURELLI, P ;

LEISTAM, O ;

LUCKEY, D ;

MASSAI, MM ;

MATSUDA, T ;

MEROLA, L ;

MORGANTI, M ;

NAPOLITANO, M ;

NEWMAN, H ;

NOVIKOFF, D ;

PARADISO, JA ;

PERASSO, L ;

REIBEL, K ;

RINZIVILLO, R ;

SANGUINETTI, G ;

SCHULZ, I ;

SCIACCA, G ;

SPILLANTINI, P ;

STEUER, M ;

STRAUCH, K ;

SUGIMOTO, S ;

TING, SCC ;

TOKI, W ;

VALDATANAPPI, M ;

VANNINI, C ;

VANNUCCI, F ;

FISCO, F .

PHYSICAL REVIEW LETTERS, 1981, 47 (01) :12-15

[7] ORDER-ALPHA-S MONTE-CARLO CALCULATION OF HADRONIC DOUBLE-PHOTON PRODUCTION [J].

BAILEY, B ;

OWENS, JF ;

OHNEMUS, J .

PHYSICAL REVIEW D, 1992, 46 (05) :2018-2027

[8] THE LUND MONTE-CARLO FOR HADRONIC PROCESSES - PYTHIA VERSION 4.8 [J].

BENGTSSON, HU ;

SJOSTRAND, T .

COMPUTER PHYSICS COMMUNICATIONS, 1987, 46 (01) :43-82

[9] INTRINSIC TRANSVERSE-MOMENTUM IN THE PI-P-]GAMMA-GAMMA-X REACTION AT 280 GEV/C [J].

BONVIN, E ;

BOPP, R ;

CARROLL, LJ ;

CASS, AJ ;

CHUNG, SU ;

DONNAT, M ;

DORSAZ, PA ;

DURIEUX, E ;

FELIKS, ME ;

FLURI, L ;

JACKSON, JN ;

KIENZLEFOCACCI, MN ;

LYNCH, JG ;

MARTIN, M ;

MATHYS, L ;

NEGUS, PJ ;

POULTNEY, R ;

RANGE, WH ;

ROSSELET, L ;

SNOW, SW ;

THOMPSON, AS ;

TURNBULL, RM ;

WERLEN, M .

PHYSICS LETTERS B, 1990, 236 (04) :523-527

[10] PARTON DISTRIBUTIONS EXTRACTED FROM DATA ON DEEP-INELASTIC LEPTON SCATTERING, PROMPT PHOTON PRODUCTION, AND THE DRELL-YAN PROCESS [J].

HARRIMAN, PN ;

MARTIN, AD ;

STIRLING, WJ ;

ROBERTS, RG .

PHYSICAL REVIEW D, 1990, 42 (03) :798-810

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