SUDAKOV EFFECTS IN P(P)OVER-BAR ANNIHILATION

被引：38

作者：

HYER, T

机构：

[1] Stanford Linear Accelerator Center, Stanford University, Stanford

来源：

PHYSICAL REVIEW D | 1993年 / 47卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.47.3875

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We compute the amplitudes for ppBAR-->gammagamma and ppBAR-->llBAR, taking into account the Sudakov suppression resulting from radiation by isolated partons. Results for the two-photon annihilation process and form factor are presented for several candidate proton distribution amplitudes. Results are also presented for the ratio sigma(ppBAR-->gammagamma)/sigma(ppBAR-->e+e-), which is free of experimental and theoretical normalization uncertainties. Prospects for using these results to constrain the nucleon distribution amplitude are discussed.

引用

页码：3875 / 3885

页数：11

共 23 条

[1] PROTON ELECTROMAGNETIC FORM-FACTORS IN THE TIME-LIKE REGION FROM 8.9 TO 13.0 GEV(2) [J].

ARMSTRONG, TA ;

BETTONI, D ;

BHARADWAJ, V ;

BIINO, C ;

BORREANI, G ;

BROEMMELSIEK, D ;

BUZZO, A ;

CALABRESE, R ;

CECCUCCI, A ;

CESTER, R ;

CHURCH, MD ;

DALPIAZ, P ;

DALPIAZ, PF ;

DIBENEDETTO, R ;

DIMITROYANNIS, D ;

FABBRI, M ;

FAST, JE ;

GIANOLI, A ;

GINSBURG, CM ;

GOLLWITZER, KE ;

HAHN, AA ;

HASAN, MA ;

HSUEH, SY ;

LEWIS, RA ;

LUPPI, E ;

MACRI, M ;

MAJEWSKA, A ;

MANDELKERN, MA ;

MARCHETTO, F ;

MARINELLI, M ;

MARQUES, JL ;

MARSH, W ;

MARTINI, M ;

MASUZAWA, M ;

MENICHETTI, E ;

MIGLIORI, A ;

MUSSA, R ;

PALESTINI, S ;

PALLAVICINI, M ;

PASTRONE, N ;

PATRIGNANI, C ;

PEOPLES, J ;

PESANDO, L ;

PETRUCCI, F ;

PIA, MG ;

PORDES, S ;

RAPIDIS, PA ;

RAY, RE ;

REID, JD ;

RINAUDO, G .

PHYSICAL REVIEW LETTERS, 1993, 70 (09) :1212-1215

[2]

BALDINI R, COMMUNICATION

[3] EXCLUSIVE PRODUCTION OF PROTON ANTIPROTON PAIRS IN PHOTON PHOTON COLLISIONS [J].

BARTEL, W ;

BECKER, L ;

CORDS, D ;

FELST, R ;

HAIDT, D ;

KNIES, G ;

KREHBIEL, H ;

LAURIKAINEN, P ;

MAGNUSSEN, N ;

MEINKE, R ;

NAROSKA, B ;

OLSSON, J ;

SCHMIDT, D ;

STEFFEN, P ;

DIETRICH, G ;

HAGEMANN, J ;

HEINZELMANN, G ;

KADO, H ;

KAWAGOE, K ;

KLEINWORT, C ;

KUHLEN, M ;

PETERSEN, A ;

RAMCKE, R ;

SCHNEEKLOTH, U ;

WEBER, G ;

AMBRUS, K ;

BETHKE, S ;

DIECKMANN, A ;

ELSEN, E ;

HEINTZE, J ;

HELLENBRAND, KH ;

KOMAMIYA, S ;

VONKROGH, J ;

LENNERT, P ;

MATSUMURA, H ;

RIESEBERG, H ;

SPITZER, J ;

WAGNER, A ;

BOWDERY, CK ;

FINCH, AJ ;

FOSTER, F ;

HUGHES, G ;

NYE, JM ;

ALLISON, J ;

BALL, AH ;

BARLOW, RJ ;

CHRIN, J ;

DUERDOTH, IP ;

GREENSHAW, T ;

LOEBINGER, FK .

PHYSICS LETTERS B, 1986, 174 (03) :350-356

[4] HARD ELASTIC-SCATTERING IN QCD - LEADING BEHAVIOR [J].

BOTTS, J ;

STERMAN, G .

NUCLEAR PHYSICS B, 1989, 325 (01) :62-100

[5] LARGE-ANGLE 2-PHOTON EXCLUSIVE CHANNELS IN QUANTUM CHROMODYNAMICS [J].

BRODSKY, SJ ;

LEPAGE, GP .

PHYSICAL REVIEW D, 1981, 24 (07) :1808-1817

[6]

BRODSKY SJ, 1992, UNPUB 9TH INT WORKSH

[7] CALCULATION OF EXCLUSIVE PROCESSES WITH BARYONS [J].

CHERNYAK, VL ;

OGLOBLIN, AA ;

ZHITNITSKY, IR .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1989, 42 (04) :583-593

[8] NUCLEON WAVEFUNCTION AND NUCLEON FORM-FACTORS IN QCD [J].

CHERNYAK, VL ;

ZHITNITSKY, IR .

NUCLEAR PHYSICS B, 1984, 246 (01) :52-74

[9]

CHERNYAK VL, 1988, SOV J NUCL PHYS, V48, P536

[10] BARYON WAVE-FUNCTIONS AND CROSS-SECTIONS FOR PHOTON ANNIHILATION TO BARYON PAIRS [J].

FARRAR, GR ;

ZHANG, H ;

OGLOBLIN, AA ;

ZHITNITSKY, IR .

NUCLEAR PHYSICS B, 1989, 311 (03) :585-612

← 1 2 3 →