Physical sciences topic list of research papers
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Pair production of Two Higgs Doublet Model light Higgs bosons in γγ collisions
Abstract We study the production of a pair of light, neutral, CP-even Higgs bosons in photon–photon collisions within the general Two Higgs Doublet Model (THDM). This is a process for which the lowest order contribution in both, the Standard Model...
2008 / Fernando Cornet, Wolfgang Hollik -
Possibility of determining gluon polarization via polarized top pairs in gamma-proton scattering
Abstract We study the possibility for directly measuring the polarized gluon distribution in the process γ p → t ...
2009 / S. Atağ, A.A. Billur -
Electron–positron pair production by linearly polarized photon in the nuclear field
Abstract Process of lepton pair production by polarized photon on nuclei can be used to measure the degree of linear polarization of high energy photon. The differential cross section and the analyzing power are calculated with taking into account...
2008 / S. Bakmaev, E.A. Kuraev, I. Shapoval, Yu.P. Peresun'ko -
Chiral corrections to the Roper mass☆☆This research is part of the EU Integrated Infrastructure Initiative Hadron Physics Project under contract number RII3-CT-2004-506078. Work supported in part by DFG (SFB/TR 16, “Subnuclear Structure of Matter”, and BO 1481/6-1) and by Canada's NSERC and CRC programs.
Abstract We analyze the quark mass dependence of the Roper mass to one-loop order in relativistic baryon chiral perturbation theory. The loop integrals are evaluated using infrared regularization which preserves chiral symmetry and establishes a...
2006 / B. Borasoy, P.C. Bruns, U.-G. Meißner, R. Lewis -
A general theory of quantum relativity
Abstract The geometric form of standard quantum mechanics is compatible with the two postulates: (1) the laws of physics are invariant under the choice of experimental setup and (2) every quantum observation or event is intrinsically statistical....
2003 / Djordje Minic, Chia-Hsiung Tze -
D-mesons: In-medium effects at FAIR
Abstract The D-meson spectral density at finite temperature is obtained within a self-consistent coupled-channel approach. For the bare meson–baryon interaction, a separable potential is taken, whose parameters are fixed by the position and width of ...
2006 / L. Tolós, J. Schaffner-Bielich, H. Stöcker -
Causality and universality in low-energy quantum scattering
Abstract We generalize Wigner's causality bounds and Bethe's integral formula for the effective range to arbitrary dimension and arbitrary angular momentum. Moreover, we discuss the impact of these constraints on the separation of low- and...
2009 / H.-W. Hammer, Dean Lee -
Un-particle effective action
Abstract We study un-particle dynamics in the framework of standard quantum field theory. We obtain the Feynman propagator by supplementing standard quantum field theory definitions with integration over the mass spectrum. Then we use this...
2008 / Patricio Gaete, Euro Spallucci -
Empirical constraints on parton energy loss in nucleus–nucleus collisions at RHIC
Abstract We present empirical features of parton energy loss in nucleus–nucleus collisions at RHIC through studies of the spectra and nuclear modification factors ( R ...
2009 / Gang Wang, Huan Zhong Huang -
Universal description of viscoelasticity with foliation preserving diffeomorphisms
Abstract A universal description is proposed for generic viscoelastic systems with a single relaxation time. Foliation preserving diffeomorphisms are introduced as an underlying symmetry which naturally interpolates between the two extreme limits of ...
2009 / Tatsuo Azeyanagi, Masafumi Fukuma, Hikaru Kawai, Kentaroh Yoshida -
Pseudoscalar boson and SM-like Higgs boson production at ILC in the left–right twin Higgs model
Abstract Besides the SM-like Higgs boson h, the left–right twin Higgs(LRTH) model predicts the existence of the neutral pseudoscalar boson ϕ 0 ...
2011 / Yao-Bei Liu -
Type II seesaw mechanism for Higgs doublets and the scale of new physics
Abstract We elaborate on an earlier proposal by Ernest Ma of a type II seesaw mechanism for suppressing the vacuum expectation values of some Higgs doublets. We emphasize that, by nesting this form of seesaw mechanism into various other seesaw...
2009 / W. Grimus, L. Lavoura, B. Radovčić -
Generalized tri-bimaximal neutrino mixing and its sensitivity to radiative corrections
Abstract We argue that the tri-bimaximal neutrino mixing pattern V 0 or its generalized form ...
2005 / Shu Luo, Zhi-Zhong Xing -
Anyons with anomalous gyromagnetic ratio and the Hall effect
Abstract Letting the mass depend on the spin-field coupling as M 2=m 2−(eg/2c 2)F αβ S ...
2004 / C. Duval, P.A. Horváthy -
Charm quark–antiquark correlations in photon–proton scattering
Abstract Correlation of charm-quark–charm-antiquark in γp scattering are calculated in the k t -factorization approach. We apply different unintegrated gluon distributions (uGDF)...
2004 / M. Łuszczak, A. Szczurek -
Borel resummation of soft gluon radiation and higher twists
Abstract We show that the well-known divergence of the perturbative expansion of resummed results for processes such as deep-inelastic scattering and Drell–Yan in the soft limit can be treated by Borel resummation. The divergence in the Borel...
2006 / Stefano Forte, Giovanni Ridolfi, Joan Rojo, Maria Ubiali -
A heterotic standard model
Abstract Within the context of the E 8 × E ...
2005 / Volker Braun, Yang-Hui He, Burt A. Ovrut, Tony Pantev -
Magnetogenesis, spectator fields and CMB signatures
Abstract A viable class of magnetogenesis models can be constructed by coupling the kinetic term of the hypercharge to a spectator field whose dynamics does not affect the inflationary evolution. The magnetic power spectrum is explicitly related to...
2007 / Massimo Giovannini -
Search for top squarks at Tevatron inspired by dark matter and electroweak baryogenesis
Abstract The search for the top squark ( t ˜ 1 ...
2008 / Nabanita Bhattacharyya, Amitava Datta, Manas Maity -
Generalized Einstein operator generating functions
Abstract We present gauge invariant, self-adjoint Einstein operators for mixed symmetry higher spin theories. The result applies to multi-forms, multi-symmetric forms and mixed antisymmetric and symmetric multi-forms, generalizing previous results...
2009 / D. Cherney, E. Latini, A. Waldron