Inclusive b-jet and b(b)over-bar-dijet production at the LHC via Reggeized gluons

被引：23

作者：

Saleev, V. A. ^{[1
]}

Shipilova, A. V. ^{[1
,2
]}

机构：

[1] Samara State Univ, Samara 443011, Russia

[2] Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany

来源：

PHYSICAL REVIEW D | 2012年 / 86卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

UNINTEGRATED PARTON DISTRIBUTIONS; HEAVY-QUARK PRODUCTION; FRAGMENTATION; COLLISIONS; MESONS;

D O I：

10.1103/PhysRevD.86.034032

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study inclusive b-jet and b (b) over bar -dijet production at the CERN LHC invoking the hypothesis of gluon Reggeization in t-channel exchanges at high energy. The b-jet cross section includes contributions from open b-quark production and from b-quark production via gluon-to-bottom-pair fragmentation. The transverse-momentum distributions of inclusive b-jet production measured with the ATLAS detector at the CERN LHC in different rapidity ranges are calculated both within multi-Regge kinematics and quasimulti-Regge kinematics. The b (b) over bar -dijet cross section is calculated within quasi-multi-Regge kinematics as a function of the dijet invariant mass M-jj, the azimuthal angle between the two jets Delta Phi, and the angular variable chi. At the numerical calculation, we adopt the Kimber-Martin-Ryskin and Blumlein prescriptions to derive unintegrated gluon distribution function of the proton from its collinear counterpart for which we use the Martin-Roberts-Stirling-Thorne set. We find good agreement with measurements by the ATLAS and CMS Collaborations at the LHC at the hadronic c.m. energy of root S = 7 TeV.

引用

页数：9

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