Physical sciences topic list of research papers
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Range corrections to doublet S-wave neutron–deuteron scattering
Abstract We calculate the range corrections to S-wave neutron–deuteron scattering in the doublet channel (S=1/2) to first order in r/a where a is the scattering length and r the effective range. Ultraviolet divergences appearing at this order can be ...
2002 / H.-W. Hammer, Thomas Mehen -
Studying 750 GeV di-photon resonance at photon–photon collider
Abstract Motivated by the recent LHC discovery of the di-photon excess at the invariant mass of ∼ 750 GeV , we study the prospect of investigating the...
2016 / Hayato Ito, Takeo Moroi, Yoshitaro Takaesu -
$ \overline{B}\ \to {X_s}\gamma $ in the Two Higgs Doublet Model up to next-to-next-to-leading order in QCD2012 / Thomas Hermann, Mikolaj Misiak, Matthias Steinhauser
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New coordinates for de Sitter space and de Sitter radiation
Abstract We introduce a simple coordinate system covering half of de Sitter space. The new coordinates have several attractive properties: the time direction is a Killing vector, the metric is smooth at the horizon, and constant-time slices are just ...
2002 / Maulik K Parikh -
Electric polarizability of mesons in semirelativistic quark models
Abstract The electric polarizability of mesons, in particular, that of the charged pion, is studied in the framework of a semirelativistic description of hadrons as bound states of valence quarks in terms of a Hamiltonian composed of the...
2002 / Wolfgang Lucha, Franz F. Schöberl -
The possible test of the calculations of nuclear matrix elements of the (ββ)0ν-decay
Abstract The existing calculations of the nuclear matrix elements of the neutrinoless double β-decay differ by about a factor three. This uncertainty prevents quantitative interpretation of the results of experiments searching for this process. We...
2002 / S.M Bilenky, J.A Grifols -
Less suppressed μ→eγ and τ→μγ loop amplitudes and extra dimension theories
Abstract When μeγ (or τμγ) loop involves a vector boson, the amplitude is suppressed by more than two powers of heavy particle masses. However we show that the scalar boson loop diagrams are much less damped. Particularly, the loop amplitude in...
2003 / Bo He, T.P Cheng, Ling-Fong Li -
Microscopic description of the scissors mode in odd-mass heavy deformed nuclei
Abstract Pseudo-SU(3) shell-model results are reported for M1 excitation strengths in 157Gd, 163Dy and 169Tm in the energy range between 2 and 4 MeV. Non-zero pseudo-spin couplings between the configurations play a very important role in determining ...
2002 / Carlos E. Vargas, Jorge G. Hirsch, Jerry P. Draayer -
SUSY QCD corrections to the polarization and spin correlations of top quarks produced in e+e− collisions
Abstract We compute the supersymmetric QCD corrections to the polarization and the spin correlations of top quarks produced above threshold in e + e − collisions, taking into account...
2003 / A. Brandenburg, M. Maniatis -
Search for doubly charged Higgs bosons at LEP2
Abstract A search for pair-produced doubly charged Higgs bosons has been performed using the data collected by the DELPHI detector at LEP at centre-of-mass energies between 189 and 209 GeV. No excess is observed in the data with respect to the...
2003 / J. Abdallah, P. Abreu, W. Adam, P. Adzic, T. Albrecht, et al. -
Revisiting pseudo-Dirac neutrinos
Abstract We study the pseudo-Dirac mixing of left- and right-handed neutrinos in the case where the Majorana masses M L and M R ...
2002 / K.R.S. Balaji, Anna Kalliomäki, Jukka Maalampi -
Search for the Standard Model Higgs boson in the two photon decay channel with the ATLAS detector at the LHC
Abstract A search for the Standard Model Higgs boson in the two photon decay channel is reported, using 1.08 fb − ...
2011 / G. Aad, B. Abbott, J. Abdallah, A.A. Abdelalim, A. Abdesselam, et al. -
Studies of beauty and charm quark production and decays with the CMS
Abstract We review the recent results of the CMS experiment in the field of b-quark production, B hadron spectroscopy and decays. The beauty quark production cross section measurements are performed both in inclusive and exclusive channels. In...
2013 / Luca Perrozzi -
The static quark potential from the gauge invariant Abelian decomposition
Abstract We investigate the relationship between colour confinement and topological structures derived from the gauge invariant Abelian (Cho–Duan–Ge) decomposition. This Abelian decomposition is made imposing an isometry on a colour field n which...
2014 / Nigel Cundy, Y.M. Cho, Weonjong Lee, Jaehoon Leem -
Status and performance of the ATLAS Pixel Detector after 3 years of operation
Abstract The ATLAS Pixel Detector is the innermost detector of the ATLAS experiment at the Large Hadron Collider at CERN. The detector provides hermetic coverage with three cylindrical layers and three disks of Pixel Detectors on each side. It...
2014 / Timon Heim -
Zγ production at hadron colliders in NNLO QCD
Abstract We consider the production of Zγ pairs at hadron colliders. We report on the first complete and fully differential computation of radiative corrections at next-to-next-to-leading order in QCD perturbation theory. We present selected...
2014 / Massimiliano Grazzini, Stefan Kallweit, Dirk Rathlev, Alessandro Torre -
Boundary state in an integrable quantum field theory out of equilibrium
Abstract We study a quantum quench of the mass and the interaction in the Sinh-Gordon model starting from a large initial mass and zero initial coupling. Our focus is on the determination of the expansion of the initial state in terms of post-quench ...
2014 / Spyros Sotiriadis, Gabor Takacs, Giuseppe Mussardo -
Coexistence of Superconductivity and Antiferromagnetism and its Effects on Crossover as to Correlation Strength in Hubbard Model
Abstract Using a variational Monte Carlo method, the interplay between antiferromagnetism and superconductivity is studied for the two- dimensional Hubbard model with a diagonal transfer t’. It is found with a refined function that the optimized...
2013 / K. Kobayashi, H. Yokoyama -
Supersymmetry for gauged double field theory and generalised Scherk–Schwarz reductions
Abstract Previous constructions of supersymmetry for double field theory have relied on the so-called strong constraint. In this paper, the strong constraint is relaxed and the theory is shown to possess supersymmetry once the generalised...
2014 / David S. Berman, Kanghoon Lee -
Gravitational field of Schwarzschild soliton
Abstract The aim of this paper is to study the gravitational field of Schwarzschild soliton. Use of characteristic of λ -tensor is given to determine...
2013 / Musavvir Ali, Zafar Ahsan