Physical sciences topic list of research papers
-
Binary fission and coplanar cluster decay of 60Zn compound nuclei at high angular momentum
Abstract Fission decays with two heavy fragments in coincidence have been measured from 60Ni compound nuclei, formed in the 36Ar+ 24Mg reaction at E ...
2007 / V. Zherebchevsky, W. von Oertzen, D. Kamanin, B. Gebauer, S. Thummerer, et al. -
Anticharmed pentaquark Θc(3099) from QCD sum rules
Abstract We construct QCD sum rules for the anti-charmed pentaquark Θ c (3099), recently reported at HERA. The sum rules are constructed similarly with the Θ ...
2004 / Hungchong Kim, Su Houng Lee, Yongseok Oh -
The phase structure of Einstein–Cartan theory
Abstract In the Einstein–Cartan theory of torsion-free gravity coupling to massless fermions, the four-fermion interaction is induced and its strength is a function of the gravitational and gauge couplings, as well as the Immirzi parameter. We study ...
2008 / She-Sheng Xue -
Direction-sensitive dark matter search results in a surface laboratory
Abstract We developed a three-dimensional gaseous tracking device and performed a direction-sensitive dark matter search in a surface laboratory. By using 150 Torr carbon-tetrafluoride (CF4) gas, we obtained a sky map drawn with the recoil...
2007 / Kentaro Miuchi, Kaori Hattori, Shigeto Kabuki, Hidetoshi Kubo, Shunsuke Kurosawa, et al. -
Determination of the fundamental scale of gravity and the number of space–time dimensions from high energetic particle interactions
Abstract Within the ADD-model, we elaborate an idea by Vacavant and Hinchliffe [J. Phys. G 27 (2001) 1839] and show quantitatively how to determine the fundamental scale of TeV-gravity and the number of compactified extra dimensions from data at...
2005 / J. Ruppert, C. Rahmede, M. Bleicher -
An atavistic Lie algebra
Abstract An infinite-dimensional Lie algebra is proposed which includes, in its subalgebras and limits, most Lie algebras routinely utilized in physics. It relies on the finite oscillator Lie group, and appears applicable to twisted noncommutative...
2006 / David B. Fairlie, Cosmas K. Zachos -
Source shape determination with directional fragment–fragment velocity correlations
Abstract Correlation functions, constructed from directional projections of the relative velocities of fragments, are used to determine the shape of the breakup volume in coordinate space. For central collisions of 129Xe+ natSn...
2007 / A. Le Fèvre, C. Schwarz, G. Auger, M.L. Begemann-Blaich, N. Bellaize, et al. -
Transverse momentum dependence of semi-inclusive pion production
Abstract Cross sections for semi-inclusive electroproduction of charged pions ( π ± ) from both proton and deuteron targets...
2008 / H. Mkrtchyan, P.E. Bosted, G.S. Adams, A. Ahmidouch, T. Angelescu, et al. -
Corrections to Schwarzschild solution in noncommutative gauge theory of gravity
Abstract A deformed Schwarzschild solution in noncommutative gauge theory of gravitation is obtained. The gauge potentials (tetrad fields) are determined up to the second order in the noncommutativity parameters ...
2008 / M. Chaichian, A. Tureanu, G. Zet -
Holographic model at finite temperature with R-charge density
Abstract We consider a holographic model of QCD at finite temperature with nonzero chemical potentials conjugate to R-charge densities. A critical surface of the confinement–deconfinement phase transition is shown for five-dimensional charged black...
2006 / Kazuo Ghoroku, Akihiro Nakamura, Masanobu Yahiro -
Testing the theory of QGP-induced energy loss at RHIC and the LHC
Abstract We compare an analytic model of jet quenching, based on the GLV non-Abelian energy loss formalism, to numerical results for the centrality dependent suppression of hadron cross sections in Au+Au and Cu+Cu collisions at RHIC. Simulations of...
2006 / Ivan Vitev -
The universe is accelerating. Do we need a new mass scale?
Abstract We try to address quantitatively the question whether a new mass is needed to fit current supernovae data. For this purpose, we consider an infra-red modification of gravity that does not contain any new mass scale but systematic subleading ...
2010 / Savvas Nesseris, Federico Piazza, Shinji Tsujikawa -
Charged lepton mass spectrum and supersymmetric yukawaon model
Abstract On the basis of the so-called supersymmetric yukawaon model, it is investigated what form of the superpotential W can lead to the observed charged lepton mass spectrum. A simple form of W can speculate reasonable values of ...
2009 / Yoshio Koide -
Flavon inflation
Abstract We propose an entirely new class of particle physics models of inflation based on the phase transition associated with the spontaneous breaking of family symmetry responsible for the generation of the effective quark and lepton Yukawa...
2008 / S. Antusch, S.F. King, M. Malinský, L. Velasco-Sevilla, I. Zavala -
Electrophobic Lorentz invariance violation for neutrinos and the see-saw mechanism
Abstract We show how Lorentz invariance violation (LIV) can occur for Majorana neutrinos, without inducing LIV in the charged leptons via radiative corrections. Such “electrophobic” LIV is due to the Majorana nature of the LIV operator together with ...
2004 / Sandhya Choubey, S.F. King -
Generalised parton distributions at HERA and prospects for COMPASS
Abstract We present a model of generalised parton distributions based on a forward ansatz in the DGLAP region. We discuss some aspects of the parametrisations, as the dependence in t, with factorised and non-factorised approaches, where t is the...
2007 / L. Schoeffel -
Formation and decay of hadronic resonances in the QGP
Abstract Hadronic resonances can play a pivotal role in providing experimental evidence for partial chiral symmetry restoration in the deconfined quark–gluon phase produced at RHIC and the LHC. Their lifetimes, which are comparable to the lifetime...
2008 / C. Markert, R. Bellwied, I. Vitev -
On general properties of Lorentz-invariant formulation of noncommutative quantum field theory
Abstract We study general properties of certain Lorentz-invariant noncommutative quantum field theories proposed in the literature. We show that causality in those theories does not hold, in contrast to the canonical noncommutative field theory with ...
2008 / Sami Saxell -
Gaussian wave packet states of relic gravitons
Abstract In this contribution, we investigate quantum effects of relic gravitons in a Friedmann–Robertson–Walker (FRW) cosmological background. We reduce the problem to that of a generalized time-dependent harmonic oscillator and find the...
2008 / I.A. Pedrosa, K. Bakke, C. Furtado -
Supersymmetric hybrid inflation redux
Abstract We discuss the important role played during inflation by one of the soft supersymmetry breaking terms in the inflationary potential of supersymmetric hybrid inflation models. With minimal Kähler potential, the inclusion of this term allows...
2009 / Mansoor Ur Rehman, Qaisar Shafi, Joshua R. Wickman