5 Quark-hadron duality 51 6 Conclusion 55 ii 0.1 Preface This Thesis is a review of the inclusive decays of heavy hadron. It is based on the author's study of two issues which are important in the description of the inclusive beauty decays given by the heavy quark expansion. • Evaluation of the expectation values of the four-quark operators in the heavy quark expansion, • Study on the validity ...

Article history: Received 26 September 2013 Received in revised form 11 April 2014 Accepted 7 May 2014 Available online 22 May 2014 Editor: M. Doser A peaking structure in the J/ψφ mass spectrum near threshold is observed in B± → J/ψφK± decays, produced in pp collisions at √ s = 7 TeV collected with the CMS detector at the LHC. The data sample, selected on the basis of the dimuon decay mode of ...

In supersymmetric models the lightest Higgs boson may decay with a sizable branching ratio into a pair of light neutralinos. We analyze such decays within the context of the minimal supersymmetric standard model with R-parity violation, where the neutralino itself is unstable and decays into Standard Model fermions. We show that the R-parity violating couplings induce novel Higgs decay signals ...

We perform a preliminary study of the ability of the Higgs decay to four leptons to shed light on the top quark Yukawa couplings. In particular we examine whether the h → 4` ‘golden channel’ is sensitive to the CP properties of the top quark couplings to the Higgs boson. We show that kinematic distributions are sensitive to interference of the next-to-leading order electroweak corrections with ...

LHC run-II has a great potential to search for new resonances in the diphoton channel. Latest 13 TeVdata already put stringent limits on the cross sections in the diphoton channel assuming the resonance is produced through the gluon-gluon fusion. Many beyond the Standard Model (SM) theories predict TeV-scale scalars, which copiously decay to diphotons. Apart from the gluon-gluon fusion producti...

Abstract We explore the possibility that dark matter relic density is not produced by a thermal mechanism directly, but decay of other heavier dark-sector particles which themselves can be freeze-out mechanism. Using concrete model with light from sector decay, we study collider signature associated Higgs production processes. find future lepton colliders could better place to probe this kind t...

The inclusive charged hadron momentum spectra from the $ and $' decays produced in e+ecoilisions at SPEAR are presented, The data were obtained with a small solid-angle, single-arm magnetic spectrometer with good particle identification abilities centered at 90 degrees with respect to the beams. The particle-separated invariant cross sections are compared with data from e+ecollisions at 6 = 4.8...