Igor I. Katkov

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A search for narrow resonances in the dijet mass spectrum is performed using data corresponding to an integrated luminosity of 2.9 pb⁻¹ collected by the CMS experiment at the Large Hadron Collider. Upper limits at the 95% confidence level are presented on the product of the resonance cross section, branching fraction into dijets, and acceptance, separately(More)
Bose-Einstein correlations of charged and neutral kaons have been measured in e ± p deep inelastic scattering with an integrated luminosity of 121 pb −1 using the ZEUS detector at HERA. The two-particle correlation function was studied as a function of the four-momentum difference of the kaon pairs, Q 12 = −(p 1 − p 2) 2 , assuming a Gaussian shape for the(More)
THREE MODES FOR CRYOPRESERVATION (CP) OF HUMAN IPSC CELLS HAVE BEEN COMPARED: STD: standard CP of small clumps with 10% of CPA in cryovials, ACC: dissociation of the cells with Accutase and freezing in cryovials, and PLT: programmed freezing of adherent cells in plastic multiwell dishes in a programmable freezer using one- and multistep cooling protocols.(More)
Beauty production in events containing two muons in the final state has been measured with the ZEUS detector at HERA using an integrated luminosity of 114 pb −1. A low transverse-momentum threshold for muon identification, in combination with the large rapidity coverage of the ZEUS muon system, gives access to almost the full phase space for beauty(More)
A search for quark compositeness in the form of quark contact interactions, based on hadronic jet pairs (dijets) produced in proton-proton collisions at √s=7 TeV, is described. The data sample of the study corresponds to an integrated luminosity of 2.9 pb(-1) collected with the CMS detector at the LHC. The dijet centrality ratio, which quantifies the(More)
Beauty photoproduction in dijet events has been measured at HERA with the ZEUS detector using an integrated luminosity of 126 pb −1. Beauty was identified in events with a muon in the final state by using the transverse momentum of the muon relative to the closest jet. Lifetime information from the silicon vertex detector was also used; the impact parameter(More)
Citation CMS Collaboration et al. " Transverse-momentum and Pseudorapidity Distributions of Charged Hadrons in Pp Collisions at $\sqrt{s} = 0.9 $ and 2.36 TeV. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Transverse-momentum and pseudorapidity distributions of charged hadrons in pp(More)
The production of charm and beauty quarks in ep interactions has been measured with the ZEUS detector at HERA for squared four-momentum exchange Q 2 > 20 GeV 2 , using an integrated luminosity of 126 pb −1. Charm and beauty quarks were identified through their decays into muons. Differential cross sections were measured for muon transverse momenta p µ T >(More)
The exclusive photoproduction reaction γ p → Υ p has been studied with the ZEUS experiment in ep collisions at HERA using an integrated luminosity of 468 pb −1. The measurement covers the kinematic range 60 < W < 220 GeV and Q 2 < 1 GeV 2 , where W is the photon-proton centre-of-mass energy and Q 2 is the photon virtuality. These results, which represent(More)
The production of D ± and D 0 mesons has been measured with the ZEUS detector at HERA using an integrated luminosity of 133.6 pb −1. The measurements cover the kinematic range 5 < Q 2 < 1000 GeV 2 , 0.02 < y < 0.7, 1.5 < p D T < 15 GeV and |η D | < 1.6. Combinatorial background to the D meson signals is reduced by using the ZEUS microvertex detector to(More)