2021   01   en   p.03-07 F.N. Ahmadov1,2, M.A. Manashova1,3,
Study of WH production at LHC using different event generators		  pdf 

ABSTRACT

In this paper, the angular features of the signal and background processes of the associated production of the Higgs boson with W-boson are presented. Signal and background processes are generated using the CompHEP, POWHEG and PYTHIA generators. Monte Carlo data are processed in ROOT software. We also compared the shape of the distributions of kinematic variables obtained from different generators and found that the shape of these distributions is similar for different generators. Significant deviation of POWHEG distributions from other generators can be explained by the fact that it uses NLO correction while other generators use LO approximation.

Keywords: Higgs boson, event generator, associated production.
DOI: 10.16/j.nima.2005.11.205

Received: 02.01.2021

AUTHORS & AFFILIATIONS

1. Joint Institute for Nuclear Research, Dubna, Russia
2. Institute of Physics of ANAS, AZ 1143, H. Javid ave., 131, Baku, Azerbaijan
3. Dubna State University
E-mail: fahmadov@jinr.ru, munira.manashova@mail.ru 		REFERENCIES

[1]   A. Pukhov, E. Boos, M. Dubinin, V. Edneral, V. Ilyin, D. Kovalenko, A. Kryukov, V. Savrin. CompHEP - a package for evaluation of Feynman diagrams and integration over multi-particle phase space. User’s manual for version 33, 2000 [arXiv:hep-ph/9908288].
[2]   T. Sjostrand, S. Mrenna, P. Skands. PYTHIA 6.4 physics and manual, JHEP 0605: 026,2006 [arXiv: hep-ph/0603175].
[3]   S. Frixione, P. Nason and C. Oleari. Matching NLO QCD computations with Parton Shower simulations: the POWHEG method, JHEP 11, 2007, 070 [arXiv:0709.2092].
[4]   Rene Brun et al., ROOT Data analysis framework User’s Guide, May 2018.
[5]   T. Sjostrand, S. Mrenna and P.Z. Skands. A Brief Introduction to PYTHIA 8.1, Comput. Phys. Commun. 178, 2008, 852 [arXiv:0710.3820].
[6]   Spin effects in the process of associative production of the Higgs boson and W± boson, F.Ahmadov, M.Manashova, Eurasian Journal of Physics and Functional Materials, Vol.4, № 2, 2020, 132-138.
[7]   Gionata Luisoni, Paolo Nason, Carlo Oleari, Francesco Tramontano. HW/HZ + 0 and 1 jet at NLO with the POWHEG BOX interfaced to GoSam and their merging within MiNLO, 2013.
[8]   OPAL Collaboration, W-boson polarization at LEP2, Physics Letter B 585, 2004, 223-236.
[9]   ATLAS Collaboration, Measurement of W±Z production cross sections and gauge boson polarization in pp collisions at √s = 13 TeV with the ATLAS detector, Eur. Phys. J. C, 2019, 535.
[10]  ATLAS Collaboration, Observation of H→bb‾ decays and VH production with the ATLAS detector, Phys. Lett. B 786, 2018, 59.