Parton showers with quantum interference: leading color, spin averaged

被引：32

作者：

Nagy, Zoltan ^{[1
]}

Soper, Davison E. ^{[2
]}

机构：

[1] CERN, Div Theory, CH-1211 Geneva 23, Switzerland

[2] Univ Oregon, Inst Theoret Sci, Eugene, OR 97403 USA

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2008年 / 03期

关键词：

phenomenological models; QCD; parton model; hadronic colliders;

D O I：

10.1088/1126-6708/2008/03/030

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 have previously described a mathematical formulation for a parton shower based on the approximation of strongly ordered virtualities of successive parton splittings. Quantum interference, including interference among different color and spin states, is included. In this paper, we add the further approximations of taking only the leading color limit and averaging over spins, as is common in parton shower Monte Carlo event generators. Soft gluon interference effects remain with this approximation. We find that the leading color, spin averaged shower in our formalism is similar to that in other shower formulations. We discuss some of the differences.

引用

页数：35

共 23 条

[1] A PERTURBATIVE APPROACH TO B-DECAYS INTO 2 PI-MESONS [J].

DAHM, M ;

JAKOB, R ;

KROLL, P .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1995, 68 (04) :595-605

[2] A general algorithm for calculating jet cross sections in NLO QCD [J].

Catani, S ;

Seymour, MH .

NUCLEAR PHYSICS B, 1997, 485 (1-2) :291-419

[3] Parton showers from the dipole formalism [J].

Dinsdale, Michael ;

Ternick, Marko ;

Weinzierl, Stefan .

PHYSICAL REVIEW D, 2007, 76 (09)

[4]

ELLIS RK, 1987, NUCL PHYS B, V294, P1180

[5]

Gehrmann-De Ridder A, 2005, J HIGH ENERGY PHYS, DOI 10.1088/1126-6708/2005/09/056

[6]

GIELE WT, ARXIV07073652

[7]

GIESEKE S, HEPTH0609306

[8]

GLEISBERG T, 2004, JHEP, V5, P56

[9] BACKWARDS EVOLVED INITIAL STATE PARTON SHOWERS [J].

GOTTSCHALK, TD .

NUCLEAR PHYSICS B, 1986, 277 (3-4) :700-738

[10] Antenna factorization of gauge-theory amplitudes [J].

Kosower, DA .

PHYSICAL REVIEW D, 1998, 57 (09) :5410-5416

← 1 2 3 →