Physical sciences topic list of research papers
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Masses, fermions and generalized D-dimensional unitarity
Abstract We extend the generalized D-dimensional unitarity method for numerical evaluation of one-loop amplitudes by incorporating massive particles. The issues related to extending the spinor algebra to higher dimensions, treatment of external...
2009 / R. Keith Ellis, Walter T. Giele, Zoltan Kunszt, Kirill Melnikov -
A method of rapid testing of radioactivity of different materials
Abstract A new method for the detection of low-level ionising radiation in solid, liquid or loose materials, which is based on the use of the Bayesian approach for the estimation of probabilistic parameters and a special statistical criterion, is...
2016 / Yu. Zabulonov, V. Burtniak, V. Krasnoholovets -
Systematics of metal-insulator interfacial energies: A new rule for wetting and strong catalyst-support interactions
Abstract This work concerns three questions: How can one decide whether a particular liquid metal will wet a given oxide substrate? What does analysis of experimental data tell one about the nature of the metal-substrate interactions? Is there...
2002 / A.M. Stoneham -
Absorption of a quantum in a D1/D5 system
Abstract In Nucl. Phys. B 615 (2001) 285 [hep-th/0107113], the wave equation for a minimally coupled scalar was studied in the geometry of a D1/D5 system with non-zero angular momentum. The probability for a quantum to enter the throat was computed...
2004 / I.Y. Park -
Forward coherent ϕ-meson photoproduction from deuterons near threshold
Abstract Differential cross sections and decay asymmetries for coherent ϕ-meson photoproduction from deuterons were measured for the first time at forward angles using linearly polarized photons at ...
2007 / W.C. Chang, K. Horie, S. Shimizu, M. Miyabe, D.S. Ahn, et al. -
New limits on spin-dependent weakly interacting massive particle (WIMP) nucleon coupling
Abstract The HDMS (Heidelberg dark matter search) setup at LNGS, operates the first enriched 73Ge detector worldwide, and looks for spin-dependent WIMP-nucleon coupling at the Gran Sasso Underground Laboratory. The data collected from February 2001...
2005 / H.V. Klapdor-Kleingrothaus, I.V. Krivosheina, C. Tomei -
Stationary condition in a perturbative approach for mass varying neutrinos
Abstract A perturbative approach for arbitrary choices of the equation of state of the universe is introduced in order to treat scenarios for mass varying neutrinos (MaVaNs) coupled to the dark sector. The generalized criterion for the applicability ...
2008 / A.E. Bernardini, O. Bertolami -
Impact of slepton generation mixing on the search for sneutrinos
Abstract We perform a systematic study of sneutrino production and decays in the Minimal Supersymmetric Standard Model (MSSM) with slepton generation mixing. We study both fermionic decays like ν ...
2008 / A. Bartl, K. Hidaka, K. Hohenwarter-Sodek, T. Kernreiter, W. Majerotto, et al. -
Probing CPT violation with CMB polarization measurements
Abstract The electrodynamics modified by the Chern–Simons term L c s ...
2010 / Jun-Qing Xia, Hong Li, Xinmin Zhang -
Chargino contribution to the rare decay b→ssd̄
Abstract The rare decay b→ss d ̄ is studied in the supersymmetric Standard Model by considering the contribution from the chargino box diagrams. We...
2004 / Xiao-Hong Wu, Da-Xin Zhang -
Ultra peripheral heavy ion collisions and the energy dependence of the nuclear radius
Abstract To estimate realistic cross sections in ultra peripheral heavy ion collisions we must remove effects of strong absorption. One method to eliminate these effects make use of a Glauber model calculation, where the nucleon–nucleon energy...
2003 / C.G Roldão, A.A Natale -
A fresh look at neutral meson mixing
Abstract In this work we show that the existence of a complete biorthonormal set of eigenvectors of the effective Hamiltonian governing the time evolution of neutral meson system is a necessary condition for diagonalizability of such a Hamiltonian....
2007 / M.A. Gomshi Nobary, B. Mojaveri -
The beam single spin asymmetry in semi-inclusive deep inelastic scattering
Abstract We study the beam single spin asymmetry in semi-inclusive hadron production in deep inelastic scattering at order 1/Q. There are two competing contributions: the leading order transverse momentum dependent parton distribution h ...
2004 / Feng Yuan -
The phase structure of the Polyakov–quark–meson model beyond mean field
Abstract The Polyakov-extended quark–meson model (PQM) is investigated beyond mean-field. This represents an important step towards a fully dynamical QCD computation. Both the quantum fluctuations to the matter sector and the back-reaction of the...
2010 / Tina Katharina Herbst, Jan M. Pawlowski, Bernd-Jochen Schaefer -
Two-loop SUSY QCD correction to the gluino pole mass
Abstract The pole mass of the gluino is diagrammatically calculated to the two-loop order in SUSY QCD as a function of the running parameters in the Lagrangian, for the gluino and squarks sufficiently heavier than the quarks. The ...
2005 / Youichi Yamada -
Regulator dependence of the proposed UV completion of the ghost condensate
Abstract Recently, it was shown that a renormalizable theory of heavy fermions coupled to a light complex boson could generate an effective action for the boson with the properties required to violate Lorentz invariance spontaneously through the...
2006 / Donal O'Connell -
The effect of “pre-formed” hadron potentials on the dynamics of heavy ion collisions and the HBT puzzle
Abstract The nuclear stopping, the elliptic flow, and the HBT interferometry are calculated by the UrQMD transport model, in which potentials for “pre-formed” particles (string fragments) from color fluxtube fragmentation as well as for confined...
2007 / Qingfeng Li, Marcus Bleicher, Horst Stöcker -
Cosmological constraints on new agegraphic dark energy
Abstract In this work, we consider the cosmological constraints on the new agegraphic dark energy (NADE) proposed in arXiv: 0708.0884, by using the observational data of type Ia supernovae (SNIa), the shift parameter from cosmic microwave background ...
2008 / Hao Wei, Rong-Gen Cai -
Influence of the halo upon angular distributions for elastic scattering and breakup
Abstract The angular distributions for elastic scattering and breakup of halo nuclei are analysed using a near-side/far-side decomposition within the framework of the dynamical eikonal approximation. This analysis is performed for 11Be impinging on...
2010 / P. Capel, M.S. Hussein, D. Baye -
Unified picture for Dirac neutrinos, dark matter, dark energy and matter–antimatter asymmetry
Abstract We propose a unified scenario to generate the masses of Dirac neutrinos and cold dark matter at the TeV scale, understand the origin of dark energy and explain the matter–antimatter asymmetry of the universe. This model can lead to...
2008 / Pei-Hong Gu