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Measurement of W and Z pair production and search for WZ resonances at the large hadron collider
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Srećko Morović This thesis presents a study of WZ production in proton proton collisions at a center of mass energy of 7 TeV. The measurements are based on data recorded by the CMS experiment at the Large Hadron Collider, corresponding to an integrated luminosity of approximately 5 fb-1. The electron and muon decay channels of theW and Z bosons are used. A measurement of the inclusive cross section of the pp → WZ + X process is performed, restricted to the phase space for which the Z boson mass lies in...
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Measurement of associated Wgamma production and search for anomalous WWgamma couplings with the CMS detector
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Senka Đurić The Large Hadron Collider (LHC) has recently delivered collisions at a center of mass energy of 7 TeV and has therefore allowed for the first time to test the validity of the Standard Model (SM) at TeV scale. The precise measurement of electroweak processes constitute a central part of this program. Diboson processes, in which pairs of electroweak bosons are produced, provide in particular a good opportunity to test SM at these energies. They also allow to seek indirectly for new physics...
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Measurement of the 58Ni neutron capture cross section
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Petar Žugec The (n, γ) cross section of 58Ni – of importance for the nuclear astrophysics, as well as for nuclear technologies – was measured at the neutron time-of-flight facility n_TOF at CERN. For the measurement, two C6D6 liquid scintillation detectors were used, specifically optimized to provide as low neutron sensitivity as possible. At n_TOF, the highly luminous white neutron beam covers 12 orders of magnitude in energy – from 10 meV to 10 GeV. It is produced by a pulsed beam of 20 GeV...
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Measurement of the p(e, e' π+)n reaction with the short-orbit spectrometer at Q2 = 0.078 (GeV/c)2
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Ivica Friščić The precise measurement of the cross section for the p(e, e' π+)n reaction at certain kinematics, allows one to separate the cross section into quantities at a given four-momentum transfer Q2, which carry the information about the nucleon structure. Since the data at low Q2 are not known with an intended precision, a new measurement of the p(e, e' π+)n reaction was performed at Q2 = 0.078 (GeV/c)2 and at an invariant mass of W = 1094 MeV - approximately 15 MeV above the reaction threshold....
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Mechanically flexible crystals of cadmium(II) coordination polymers
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Mateja Pisačić Mechanically responsive crystals have recently attracted the attention of a wide scientific
community, but the origin of this remarkable crystal behaviour is still unclear. This thesis
provides a systematic study of mechanically induced crystal flexibility on a series of onedimensional crystalline cadmium(II) coordination polymers, which provided a valuable dataset
of different structural architectures, morphologies, and an unexpectedly wide range of variable
mechanical responses. A...
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Mechanochemical synthesis and structural characterization of bimetallic and hybrid tetrahydridoborates
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Sanja Burazer Mechanochemical reactions of metal tetrahydridoborates and metal imidazolates, as well as the structural characteristics of the obtained products were investigated. X-ray powder diffraction, both at the laboratory diffractometer and in-situ high-temperature diffraction under the synchrotron radiation was mainly used experimental technique. NMR was used as a complementary technique. Combination of molecular building blocks of lithium borohydride, LiBH4, and lithium imidazolate, LiIm, led to...
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Mehanizam aromatizacije 4-supstituiranih-1,4-dihidropiridina
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Maja Regović Hantzschovom ciklizacijom pripravljen je niz 1,4-dihidropiridinskih spojeva (1,4-DHP) s različitim supstituentima na položajima 3, 4 i 5. Iz njih su sintetizirani određeni piridinski spojevi koji su korišteni kao standardi prilikom analize omjera dealkilnog i alkilnog produkta na položaju 4 visokodjelotvornom tekućinskom kromatografijom. Za reakciju aromatizacije 1,4-DHP ispitan je niz različitih reakcijskih uvjeta i oksidansa: metalni, tritilijev i tropilijev tetrafluoroborat,...
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