Background to Higgs-boson searches from internal conversions of off-shell photons associated with $Z/ \gamma ^{\ast}$ - boson production at the LHC

doi:10.5506/APhysPolB.46.983

Background to Higgs-boson searches from internal conversions of off-shell photons associated with $Z/ \gamma ^{\ast}$ - boson production at the LHC

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Background to Higgs-boson searches from internal conversions of off-shell photons associated with $Z/ \gamma ^{\ast}$ - boson production at the LHC

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dc.contributor.author	Fedynitch, Anatoli	pl
dc.contributor.author	Krasny, Mieczysław Witold	pl
dc.contributor.author	Płaczek, Wiesław [SAP11013498]	pl
dc.date.accessioned	2015-07-17T12:23:42Z
dc.date.available	2015-07-17T12:23:42Z
dc.date.issued	2015	pl
dc.identifier.issn	0587-4254	pl
dc.identifier.uri	http://ruj.uj.edu.pl/xmlui/handle/item/13238
dc.language	eng	pl
dc.rights	Udzielam licencji. Uznanie autorstwa 3.0	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/legalcode	*
dc.title	Background to Higgs-boson searches from internal conversions of off-shell photons associated with $Z/ \gamma ^{\ast}$ - boson production at the LHC	pl
dc.type	JournalArticle	pl
dc.description.physical	983-998	pl
dc.abstract.en	This paper presents the studies of the background contribution to the $H \rightarrow 4$/ searches originating from the processes of off-shell (virtual) photon emissions and their conversions into lepton pairs accompanying the production of $Z/ \gamma ^{\ast}$ - bosons at the LHC. They extend the analyses of the irreducible background presented in the ATLAS and CMS Higgs papers [Phys. Lett. B716, 1 (2012); Phys. Lett. B726, 88 (2013); Phys. Rev. D90, 052004 (2014); CERN-PH-EP-2014-170, to appear in Phys. Rev. D; Phys. Lett. B716, 30 (2012); Phys. Rev. D89, 92007 (2014)] by taking into account the emissions of off-shell photons by parton showers. Including these effects does not change significantly the Higgs-searches background level, provided that the transverse momentum of each of the final-state leptons is restricted to the range of $p_{T,l}$> 7 GeV. In the kinematical region extended towards lower lepton transverse momenta, the parton-shower contribution becomes important. A measurement method for pinning down the parton-shower effects has been proposed.	pl
dc.description.volume	46	pl
dc.description.number	5	pl
dc.description.publication	1	pl
dc.identifier.doi	10.5506/APhysPolB.46.983	pl
dc.identifier.eissn	1509-5770	pl
dc.title.journal	Acta Physica Polonica. B	pl
dc.language.container	eng	pl
dc.affiliation	Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego	pl
dc.subtype	Article	pl
dc.rights.original	CC-BY; otwarte czasopismo; ostateczna wersja wydawcy; w momencie opublikowania; 0	pl
dc.identifier.project	ROD UJ / P	pl
.pointsMNiSW	[2015 A]: 15