Probing the proton structure with associated vector boson and heavy flavor jet production at the LHC

被引：0

作者：

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

Lykasov, G. I. ^{[2
]}

Malyshev, M. A. ^{[1
]}

Turchikhin, S. M. ^{[2
]}

机构：

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

[2] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia

来源：

PHYSICAL REVIEW D | 2022年 / 106卷 / 05期

关键词：

POMERANCHUK SINGULARITY; QUARK PRODUCTION; INTRINSIC CHARM; COHERENCE;

D O I：

10.1103/PhysRevD.106.054017

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider the production of Z bosons associated with heavy (charm and beauty) jets at the LHC energies using two scenarios based on the transverse momentum dependent (TMD) parton densities in a proton. The first of them employs the Catani-Ciafaloni-Fiorani-Marchesini gluon evolution and is implemented in the Monte Carlo event generator PEGASUS. Here, the heavy quarks are always produced in the hard partonic scattering. The second scheme is based on the parton branching approach, currently implemented into the Monte Carlo event generator CASCADE. In this scenario, the Z + jets sample is generated and then events containing the heavy flavor jet in a final state are selected. We compare the predictions obtained within these two TMD-based approaches to each other, investigate their sensitivity to the TMD gluon densities in a proton, and estimate the effects coming from parton showers and double parton scattering mechanism. Additionally, we compare our predictions with the results of traditional (collinear) pQCD calculations performed at NLO accuracy. It is shown that the TMD-based results agree with the LHC experimental data collected at root s = 8 and 13 TeV. We discuss the sensitivity of observables to the quark distributions in a proton and present predictions to search for the intrinsic charm signal in forthcoming analyses of the LHC experimental data.

引用

页数：10

共 67 条

[1]

Aad G, 2020, J HIGH ENERGY PHYS, DOI 10.1007/JHEP07(2020)044

[2] Measurement of differential production cross-sections for a Z boson in association with b-jets in 7 TeV proton-proton collisions with the ATLAS detector [J].

Aad, G. ;

Abbott, B. ;

Abdallah, J. ;

Khalek, S. Abdel ;

Abdinov, O. ;

Aben, R. ;

Abi, B. ;

Abolins, M. ;

AbouZeid, O. S. ;

Abramowicz, H. ;

Abreu, H. ;

Abreu, R. ;

Abulaiti, Y. ;

Acharya, B. S. ;

Adamczyk, L. ;

Adams, D. L. ;

Adelman, J. ;

Adomeit, S. ;

Adye, T. ;

Agatonovic-Jovin, T. ;

Aguilar-Saavedra, J. A. ;

Agustoni, M. ;

Ahlen, S. P. ;

Ahmadov, F. ;

Aielli, G. ;

Akerstedt, H. ;

Akesson, A. ;

Akimoto, G. ;

Akimov, A. V. ;

Alberghi, G. L. ;

Albert, J. ;

Albrand, S. ;

Alconada Verzini, M. J. ;

Aleksa, M. ;

Aleksandrov, I. N. ;

Alexa, C. ;

Alexander, G. ;

Alexandre, G. ;

Alexopoulos, T. ;

Alhroob, M. ;

Alimonti, G. ;

Alio, L. ;

Alison, J. ;

Allbrooke, B. M. M. ;

Allison, L. J. ;

Allport, P. P. ;

Almond, J. ;

Aloisio, A. ;

Alonso, A. ;

Alonso, F. .

JOURNAL OF HIGH ENERGY PHYSICS, 2014, (10) :1-49

[3] Measurement of hard double-parton interactions in W(→ lv) plus 2-jet events at √s=7 TeV with the ATLAS detector [J].

Aad, G. ;

Abajyan, T. ;

Abbott, B. ;

Abdallah, J. ;

Khalek, S. Abdel ;

Abdelalim, A. A. ;

Abdinov, O. ;

Aben, R. ;

Abi, B. ;

Abolins, M. ;

AbouZeid, O. S. ;

Abramowicz, H. ;

Abreu, H. ;

Ochoa, M. I. ;

Acharya, B. S. ;

Adamczyk, L. ;

Adams, D. L. ;

Addy, T. N. ;

Adelman, J. ;

Adomeit, S. ;

Adragna, P. ;

Adye, T. ;

Aefsky, S. ;

Aguilar-Saavedra, J. A. ;

Agustoni, M. ;

Ahlen, S. P. ;

Ahles, F. ;

Ahmad, A. ;

Ahsan, M. ;

Aielli, G. ;

Akesson, T. P. A. ;

Akimoto, G. ;

Akimov, A. V. ;

Alam, M. A. ;

Albert, J. ;

Albrand, S. ;

Aleksa, M. ;

Aleksandrov, I. N. ;

Alessandria, F. ;

Alexa, C. ;

Alexander, G. ;

Alexandre, G. ;

Alexopoulos, T. ;

Alhroob, M. ;

Aliev, M. ;

Alimonti, G. ;

Alison, J. ;

Allbrooke, B. M. M. ;

Allison, L. J. ;

Allport, P. P. .

NEW JOURNAL OF PHYSICS, 2013, 15

[4]

Aaij R, 2012, J HIGH ENERGY PHYS, DOI [10.1007/JHEP03(2014)108, 10.1007/JHEP06(2012)141]

[5]

Abramowicz H, 2013, Arxiv, DOI arXiv:1306.5413

[6] The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations [J].

Alwall, J. ;

Frederix, R. ;

Frixione, S. ;

Hirschi, V. ;

Maltoni, F. ;

Mattelaer, O. ;

Shao, H. -S. ;

Stelzer, T. ;

Torrielli, P. ;

Zaro, M. .

JOURNAL OF HIGH ENERGY PHYSICS, 2014, (07)

[7] TRANSVERSE MOMENTUM DEPENDENT (TMD) PARTON DISTRIBUTION FUNCTIONS: STATUS AND PROSPECTS [J].

Angeles-Martinez, R. ;

Bacchetta, A. ;

Balitsky, I. I. ;

Boer, D. ;

Boglione, M. ;

Boussarie, R. ;

Ceccopieri, F. A. ;

Cherednikov, I. O. ;

Connor, P. ;

Echevarria, M. G. ;

Ferrera, G. ;

Luyando, J. Grados ;

Hautmann, F. ;

Jung, H. ;

Kasemets, T. ;

Kutak, K. ;

Lansberg, J. P. ;

Lelek, A. ;

Lykasov, G. ;

Martinez, J. D. Madrigal ;

Mulders, P. J. ;

Nocera, E. R. ;

Petreska, E. ;

Pisano, C. ;

Placakyte, R. ;

Radescu, V. ;

Radici, M. ;

Schnell, G. ;

Scimemi, I. ;

Signori, A. ;

Szymanowski, L. ;

Monfared, S. Taheri ;

Van der Veken, F. F. ;

van Haevermaet, H. J. ;

Van Mechelen, P. ;

Vladimirov, A. A. ;

Wallon, S. .

ACTA PHYSICA POLONICA B, 2015, 46 (12) :2501-2534

[8]

[Anonymous], 2021, Journal of High Energy Physics, V2021, DOI DOI 10.1007/JHEP04(2021)109

[9]

[Anonymous], 2014, arXiv:1402.1550, V89, DOI DOI 10.1103/PHYSREVD.89.072006

[10]

Astalos R, 2015, Arxiv, DOI arXiv:1506.05829

← 1 2 3 4 5 6 7 →