Parton distributions for LO generators

被引：245

作者：

Sherstnev, A. ^{[1
]}

Thorne, R. S. ^{[2
]}

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[2] UCL, Dept Phys & Astron, London WC1E 6BT, England

来源：

EUROPEAN PHYSICAL JOURNAL C | 2008年 / 55卷 / 04期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1140/epjc/s10052-008-0610-x

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 present a study of the results obtained by combining LO partonic matrix elements with either LO or NLO parton distributions. These are compared to the best prediction using NLO for both matrix elements and parton distributions. The aim is to determine which parton distributions are most appropriate to use in those cases where only LO matrix elements are available, e.g. as in many Monte Carlo generators. Both LO and NLO parton distributions have flaws, sometimes serious, for some processes, so a modified optimal LO set is suggested. We investigate a wide variety of processes, and the new modified LO* PDF works at least as well as, and often better than, both LO and NLO PDFs in nearly all cases.

引用

页码：553 / 575

页数：23

共 27 条

[1]

Belyaev A. S., ARXIVHEPPH0101232

[2] CompHEP 4.4 - automatic computations from Lagrangians to events [J].

Boos, E ;

Bunichev, V ;

Dubinin, M ;

Dudko, L ;

Edneral, V ;

Ilyin, V ;

Kryukov, A ;

Savrin, V ;

Semenov, A ;

Sherstnev, A .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2004, 534 (1-2) :250-259

[3]

[Боос Э.Э. Boos E.E.], 2006, [Ядерная физика, Yadernaya fizika], V69, P1352

[4] Method for simulating electroweak top-quark production events in the NLO approximation: SingleTop event generator [J].

Boos, E. E. ;

Bunichev, V. E. ;

Dudko, L. V. ;

Savrin, V. I. ;

Sherstnev, V. V. .

PHYSICS OF ATOMIC NUCLEI, 2006, 69 (08) :1317-1329

[5] Next-to-leading order corrections to W+2 jet and Z+2 jet production at hadron colliders -: art. no. 113007 [J].

Campbell, J ;

Ellis, RK .

PHYSICAL REVIEW D, 2002, 65 (11)

[6] Hard interactions of quarks and gluons: a primer for LHC physics [J].

Campbell, J. M. ;

Huston, J. W. ;

Stirling, W. J. .

REPORTS ON PROGRESS IN PHYSICS, 2007, 70 (01) :89-193

[7] TRANSVERSE-MOMENTUM DISTRIBUTION IN DRELL-YAN PAIR AND W-BOSON AND Z-BOSON PRODUCTION [J].

COLLINS, JC ;

SOPER, DE ;

STERMAN, G .

NUCLEAR PHYSICS B, 1985, 250 (02) :199-224

[8] HERWIG 6: an event generator for hadron emission reactions with interfering gluons (including supersymmetric processes) [J].

Corcella, G ;

Knowles, IG ;

Marchesini, G ;

Moretti, S ;

Odagiri, K ;

Richardson, P ;

Seymour, MH ;

Webber, BR .

JOURNAL OF HIGH ENERGY PHYSICS, 2001, (01) :XX-93

[9] NON-LEADING CORRECTIONS TO THE DRELL-YAN CROSS-SECTION AT SMALL TRANSVERSE-MOMENTUM [J].

DAVIES, CTH ;

STIRLING, WJ .

NUCLEAR PHYSICS B, 1984, 244 (02) :337-348

[10]

FIELD R, ARXIVHEPPH0610012 TE

← 1 2 3 →