Physical sciences topic list of research papers
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Astrophysical interpretation of the medium scale clustering in the ultrahigh energy sky
Abstract We compare the clustering properties of the combined dataset of ultra-high energy cosmic rays events, reported by the AGASA, HiRes, Yakutsk and SUGAR Collaborations, with a catalogue of galaxies of the local universe (redshift ...
2008 / A. Cuoco, G. Miele, P.D. Serpico -
Single-proton removal reaction study of 16B
Abstract The low-lying level structure of the unbound system 16B has been investigated via single-proton removal from a 35 MeV/nucleon 17C beam. The coincident detection of the beam velocity 15B fragment and neutron allowed the relative energy of...
2009 / J.-L. Lecouey, N.A. Orr, F.M. Marqués, N.L. Achouri, J.-C. Angélique, et al. -
Comment to: “Corrections to the fine structure constant in the spacetime of a cosmic string from the generalized uncertainty principle” [Phys. Lett. B 632 (2006) 151]
Abstract In the paper [F. Nasseri, Phys. Lett. B 632 (2006) 151–154], F. Nasseri supposed that the value of the angular momentum for the Bohr's atom in the presence of the cosmic string is quantized in units of ℏ. Using this assumption it was...
2006 / Geusa de A. Marques -
Decay constants of the pion and B mesons with the Bethe–Salpeter equation
Abstract In this Letter, we investigate the under-structures of the π and B mesons in the framework of the Bethe–Salpeter equation with the confining effective potential (infrared modified flat bottom potential). In bare quark–gluon vertex...
2004 / Zhi-Gang Wang, Wei-Min Yang, Shao-Long Wan -
Generalized mirror matter models
Abstract Non-minimal gauge models with exact unbroken improper space–time symmetries are constructed and their cosmological and astrophysical implications explored.
2005 / R. Foot -
Ricci-flat and charged wormholes in five dimensions
Abstract We construct stationary Ricci-flat inter-universe Lorentzian wormhole solutions in all D ⩾ 5 dimensions that connect two flat asymptotic...
2008 / H. Lü, Jianwei Mei -
Pure leptonic gauge symmetry, neutrino masses and dark matter
Abstract A possible extension of the Standard Model to include lepton number as local gauge symmetry is investigated. In such a model, anomalies are canceled by two extra fermions doublet. After leptonic gauge symmetry spontaneously broken, three...
2010 / Wei Chao -
Stability of chiral geometry in the odd–odd Rh isotopes: spectroscopy of 106Rh
Abstract The nucleus 106Rh was populated using the reaction 96Zr(13C,p2n) at a beam energy of 51 MeV. γ-ray transitions were identified using the EUROBALL-IV γ-ray spectrometer and the DIAMANT charged particle array. The yrast band, which is based...
2004 / P. Joshi, D.G. Jenkins, P.M. Raddon, A.J. Simons, R. Wadsworth, et al. -
ADM mass and quasilocal energy of black hole in the deformed Hořava–Lifshitz gravity
Abstract Inspired by the Einstein–Born–Infeld black hole, we introduce the isolated horizon to study the Kehagias–Sfetsos (KS) black hole in the deformed Hořava–Lifshitz gravity. This is because the KS black hole is more close to the...
2010 / Yun Soo Myung -
Hawking radiation, effective actions and covariant boundary conditions
Abstract From an appropriate expression for the effective action, the Hawking radiation from charged black holes is derived, using only covariant boundary conditions at the event horizon. The connection of our approach with the Unruh vacuum and the...
2007 / Rabin Banerjee, Shailesh Kulkarni -
On the superfield effective potential in three dimensions
Abstract We develop the superfield approach to the effective potential in three dimensions and calculate the one-loop and two-loop Kählerian effective potential in commutative and noncommutative cases.
2009 / A.F. Ferrari, M. Gomes, A.C. Lehum, J.R. Nascimento, A.Yu. Petrov, et al. -
A note on the Cardy–Verlinde formula
Abstract We study static, spherically symmetric, and asymptotically AdS black hole spacetimes with matter distribution satisfying T t ...
2006 / Boliang Lin, Rong-Gen Cai -
More on meta-stable brane configuration by quartic superpotential for fundamentals
Abstract For the case where the gauge theory superpotential has a quartic term as well as the mass term for quarks, the nonsupersymmetric meta-stable brane configuration was found recently. By adding the orientifold 6-planes and the extra...
2008 / Changhyun Ahn -
Non-standard interaction effects at reactor neutrino experiments
Abstract We study non-standard interactions (NSIs) at reactor neutrino experiments, and in particular, the mimicking effects on θ 13 ...
2008 / Tommy Ohlsson, He Zhang -
Leptogenesis in realistic SO(10) models
Abstract We study the origin of baryonic matter via leptogenesis in realistic SO(10) models, in particular, in a new lopsided mass matrix model introduced recently by three of the authors. It is shown that the model generates sufficient baryon...
2007 / Xiangdong Ji, Yingchuan Li, R.N. Mohapatra, S. Nasri, Yue Zhang -
Neutrino dimuon production and the dynamical determination of strange parton distributions
Abstract Utilizing recent neutrino dimuon production measurement from NuTeV the assumptions on the determination of the strangeness content of the nucleon within the dynamical approach to parton distributions are investigated. The data are found to...
2010 / P. Jimenez-Delgado -
Eccentricity fluctuations and elliptic flow at RHIC
Abstract Fluctuations in nucleon positions can affect the spatial eccentricity of the overlap zone in nucleus–nucleus collisions. We show that elliptic flow should be scaled by different eccentricities depending on which method is used for the flow...
2006 / Rajeev S. Bhalerao, Jean-Yves Ollitrault -
Extraction of the x-dependence of the non-perturbative QCD b-quark fragmentation distribution component
Abstract Using recent measurements of the b-quark fragmentation distribution obtained in e+e−→b b ̄ events, registered at the Z pole, the...
2003 / E. Ben-Haim, Ph. Bambade, P. Roudeau, A. Savoy-Navarro, A. Stocchi -
Zero mode solutions of quark Dirac equations in QCD as the sources of chirality violating condensates
Abstract It is demonstrated, that chirality violating condensates in massless QCD arise from zero mode solutions of Dirac equations in arbitrary gluon fields. Basing of this idea, the model is suggested, which allows one to calculate quark...
2009 / B.L. Ioffe -
Compactifications on twisted tori with fluxes and free differential algebras
Abstract We describe free differential algebras for non-Abelian one and two form gauge potentials in four dimensions deriving the integrability conditions for the corresponding curvatures. We show that a realization of these algebras occurs in...
2005 / Gianguido Dall'Agata, Riccardo D'Auria, Sergio Ferrara