Interparticle correlations in the production of J/ψ pairs in proton-proton collisions

被引：51

作者：

Baranov, S. P. ^{[1
]}

Snigirev, A. M. ^{[2
]}

Zotov, N. P. ^{[2
]}

Szczurek, A. ^{[3
,4
]}

Schaefer, W. ^{[3
]}

机构：

[1] PN Lebedev Inst Phys, Moscow 119991, Russia

[2] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia

[3] Inst Nucl Phys PAN, PL-31342 Krakow, Poland

[4] Univ Rzeszow, PL-35959 Rzeszow, Poland

来源：

PHYSICAL REVIEW D | 2013年 / 87卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

DOUBLE PARTON SCATTERING; PSI-PSI-PRODUCTION; HADRONIC PRODUCTION; SEMIHARD PROCESSES; FINAL-STATES; UPSILON; CCFM;

D O I：

10.1103/PhysRevD.87.034035

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We focus on the problem of disentangling the single (SPS) and double (DPS) parton scattering modes in the production of J/psi pairs at the LHC conditions. Our analysis is based on comparing the shapes of the differential cross sections and on studying their behavior under imposing kinematical cuts. On the SPS side, we consider the leading-order O(alpha(4)(s)) contribution with radiative corrections (taken into account in the framework of the k(t)-factorization approach) and the subleading O(alpha(6)(s)) contribution from pseudo-diffractive gluon-gluon scattering represented by one-gluon exchange and two-gluon exchange mechanisms. We come to the conclusion that disentangling the SPS and DPS modes is rather difficult on the basis of azimuthal correlations, while the rapidity difference looks more promising, provided the acceptance of the experimental detectors has enough rapidity coverage. DOI: 10.1103/PhysRevD.87.034035

引用

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