Measurement of Associated Z + Charm Production in Proton–proton Collisions at \sqrt{s} = 8

Bilki, Burak; ., ve diger

Measurement of Associated Z + Charm Production in Proton–proton Collisions at \sqrt{s} = 8

dc.authorid	249433	en_US
dc.contributor.author	Bilki, Burak
dc.contributor.author	., ve diger
dc.date.accessioned	2019-03-28T13:25:29Z
dc.date.available	2019-03-28T13:25:29Z
dc.date.issued	2018
dc.department	İstanbul Beykent Üniversitesi	en_US
dc.description.abstract	A study of the associated production of a ZZ boson and a charm quark jet (Z+cZ+c), and a comparison to production with a bb quark jet (Z+bZ+b), in pppp collisions at a centre-of-mass energy of 8TeVTeV are presented. The analysis uses a data sample corresponding to an integrated luminosity of 19.7fb?1fb?1, collected with the CMS detector at the CERN LHC. The ZZ boson candidates are identified through their decays into pairs of electrons or muons. Jets originating from heavy flavour quarks are identified using semileptonic decays of cc or bb flavoured hadrons and hadronic decays of charm hadrons. The measurements are performed in the kinematic region with two leptons with p?T>20GeVpT?>20GeV, \|??\|<2.1\|??\|<2.1, 71<m??<111GeV71<m??<111GeV, and heavy flavour jets with pjetT>25GeVpTjet>25GeV and \|?jet\|<2.5\|?jet\|<2.5. The Z+cZ+c production cross section is measured to be ?(pp?Z+c+X)B(Z??+??)=8.8±0.5(stat)±0.6(syst)pb?(pp?Z+c+X)B(Z??+??)=8.8±0.5(stat)±0.6(syst)pb. The ratio of the Z+cZ+c and Z+bZ+b production cross sections is measured to be ?(pp?Z+c+X)/?(pp?Z+b+X)=2.0±0.2(stat)±0.2(syst)?(pp?Z+c+X)/?(pp?Z+b+X)=2.0±0.2(stat)±0.2(syst). The Z+cZ+cproduction cross section and the cross section ratio are also measured as a function of the transverse momentum of the ZZ boson and of the heavy flavour jet. The measurements are compared with theoretical predictions.	en_US
dc.identifier.doi	10.1140/epjc/s10052-018-5752-x
dc.identifier.issn	0434-6052
dc.identifier.pmid	31007580	en_US
dc.identifier.uri	https://doi.org/10.1140/epjc/s10052-018-5752-x
dc.identifier.wos	WOS:000429589900001	en_US
dc.identifier.wosquality	Q1	en_US
dc.indekslendigikaynak	Web of Science	en_US
dc.indekslendigikaynak	PubMed	en_US
dc.language.iso	en	en_US
dc.publisher	Springer Link	tr_TR
dc.relation.publicationcategory	Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı	en_US
dc.subject	CMS	tr_TR
dc.subject	Physics	tr_TR
dc.subject	SMP	tr_TR
dc.subject	Vector boson	tr_TR
dc.subject	Heavy flavour	tr_TR
dc.subject	Standard model physics	tr_TR
dc.title	Measurement of Associated Z + Charm Production in Proton–proton Collisions at \sqrt{s} = 8	en_US
dc.type	Article	en_US