RECENT PROGRESS IN ONE-LOOP MULTI-PARTON CALCULATIONS

被引：5
作者：
BERN, Z
DIXON, L
DUNBAR, DC
KOSOWER, DA
机构：
[1] STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309
[2] UNIV COLL SWANSEA,SWANSEA,W GLAM,WALES
[3] CENS,SERV PHYS THEOR,F-91191 GIF SUR YVETTE,FRANCE
[4] UNIV CALIF LOS ANGELES,DEPT PHYS,LOS ANGELES,CA 90024
来源：
NUCLEAR PHYSICS B | 1995年
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0920-5632(95)00060-M
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We describe techniques that simplify the calculation of one-loop QCD amplitudes with many external legs, which are needed for next-to-leading-order (NLO) corrections to multi-jet processes. The constraints imposed by perturbative unitarity, collinear singularities and a supersymmetry-inspired organization of helicity amplitudes are particularly useful. Certain sequences of one-loop helicity amplitudes may be obtained for an arbitrary number of external gluons using these techniques. We also report on progress in completing the set of one-loop helicity amplitudes required for NLO three-jet production at hadron colliders, namely the amplitudes with two external quarks and three gluons.
引用
收藏
页码：146 / 149
页数：4
相关论文
共 31 条
[1]   THE BACKGROUND FIELD METHOD AND THE S-MATRIX [J].
ABBOTT, LF ;
GRISARU, MT ;
SCHAEFER, RK .
NUCLEAR PHYSICS B, 1983, 229 (02) :372-380
[2]   THE BACKGROUND FIELD METHOD BEYOND ONE LOOP [J].
ABBOTT, LF .
NUCLEAR PHYSICS B, 1981, 185 (01) :189-203
[3]   THE 6-GLUON PROCESS AS AN EXAMPLE OF WEYL-VANDERWAERDEN SPINOR CALCULUS [J].
BERENDS, FA ;
GIELE, W .
NUCLEAR PHYSICS B, 1987, 294 (03) :700-732
[4]   RECURSIVE CALCULATIONS FOR PROCESSES WITH N GLUONS [J].
BERENDS, FA ;
GIELE, WT .
NUCLEAR PHYSICS B, 1988, 306 (04) :759-808
[5]   SINGLE BREMSSTRAHLUNG PROCESSES IN GAUGE-THEORIES [J].
BERENDS, FA ;
KLEISS, R ;
DECAUSMAECKER, P ;
GASTMANS, R ;
WU, TT .
PHYSICS LETTERS B, 1981, 103 (02) :124-128
[6]   A MAPPING BETWEEN FEYNMAN AND STRING MOTIVATED ONE-LOOP RULES IN GAUGE-THEORIES [J].
BERN, Z ;
DUNBAR, DC .
NUCLEAR PHYSICS B, 1992, 379 (03) :562-601
[7]   ONE-LOOP CORRECTIONS TO 5-GLUON AMPLITUDES [J].
BERN, Z ;
DIXON, L ;
KOSOWER, DA .
PHYSICAL REVIEW LETTERS, 1993, 70 (18) :2677-2680
[8]   EFFICIENT CALCULATION OF ONE-LOOP QCD AMPLITUDES [J].
BERN, Z ;
KOSOWER, DA .
PHYSICAL REVIEW LETTERS, 1991, 66 (13) :1669-1672
[9]   THE COMPUTATION OF LOOP AMPLITUDES IN GAUGE-THEORIES [J].
BERN, Z ;
KOSOWER, DA .
NUCLEAR PHYSICS B, 1992, 379 (03) :451-561
[10]  
BERN Z, SLACPUB6563 PREPR
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