Date: Fri, 28 Jan 11 01:05:49 GMT Subject: nucl-th daily 4 new + 3 crosses received by eprepget ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ Send any comments regarding submissions directly to submitter. ------------------------------------------------------------------------------ Archives at http://arxiv.org/ To unsubscribe, e-mail To: nucl-th@arXiv.org, Subject: cancel ------------------------------------------------------------------------------ received by eprepget from Wed 26 Jan 11 21:00:00 GMT to Thu 27 Jan 11 21:00:00 GMT ------------------------------------------------------------------------------ \\ arXiv:1101.5190 Date: Thu, 27 Jan 2011 01:12:20 GMT (139kb) Title: Structure of Lambda(1405) and threshold behavior of piSigma scattering Authors: Yoichi Ikeda, Tetsuo Hyodo, Daisuke Jido, Hiroyuki Kamano, Toru Sato and Koichi Yazaki Categories: nucl-th Comments: 19 pages, 4 figures Report-no: YITP-11-12 \\ The scattering length and effective range of the piSigma channel are studied in order to characterize the strangeness S=-1 meson-baryon scattering and the Lambda(1405) resonance. We examine various off-shell dependence of the amplitude in dynamical chiral models to evaluate the threshold quantities with the constraint at the KbarN threshold. We find that the piSigma threshold parameters are important to the structure of the Lambda(1405) resonance and provide further constraints on the subthreshold extrapolation of the KbarN interaction. \\ ( http://arxiv.org/abs/1101.5190 , 139kb) ------------------------------------------------------------------------------ \\ arXiv:1101.5194 Date: Thu, 27 Jan 2011 02:02:20 GMT (67kb) Title: Theory of Heavy Flavor in the Quark-Gluon Plasma Authors: Ralf Rapp Categories: nucl-th hep-ph nucl-ex Comments: 8 pages, 10 figures, proceedings of 6th Int. Conf. on Physics and Astrophysics of Quark-Gluon Plasma, Goa (India), Dec. 06-10, 2010 \\ Heavy-quark interactions in the Quark-Gluon Plasma are analyzed in terms of a selfconsistent Brueckner scheme using a thermodynamic $T$-matrix based on a potential model. The interrelations between quarkonium correlators, spectral functions and zero-modes, and open heavy-flavor transport and susceptibilities are elaborated. Independent constraints from thermal lattice QCD can be used to improve predictions for heavy-quark phenomenology in heavy-ion collisions. \\ ( http://arxiv.org/abs/1101.5194 , 67kb) ------------------------------------------------------------------------------ \\ arXiv:1101.5217 Date: Thu, 27 Jan 2011 07:16:11 GMT (78kb) Title: Nuclear matter symmetry energy and symmetry energy coefficient in mass formula Authors: Lie-Wen Chen Categories: nucl-th astro-ph.SR nucl-ex Comments: 6 pages, 2 figures \\ Within the Skyrme-Hartree-Fock (SHF) approach, we show that for a fixed mass number $A$, both the symmetry energy coefficient $a_{sym}(A)$ in the semi-empirical mass formula and the nuclear matter symmetry energy $E_{sym}({\rho_{A}})$ at a subsaturation reference density $\rho_{A}$ can be determined essentially by the symmetry energy $E_{sym}({\rho_{0}})$ and its density slope $L$ at saturation density ${\rho_{0}}$. Meanwhile, we find the dependence of $a_{sym}(A)$ on $E_{sym}({\rho_{0}})$ or $L$ is approximately linear and is very similar to the corresponding linear dependence displayed by $E_{sym}({\rho_{A}})$, providing an explanation for the relation $E_{sym}({\rho_{A}})\approx a_{sym}(A)$. Our results indicate that a value of $E_{sym}({\rho_{A}})$ can put important constraints on $E_{sym}({\rho_{0}})$ and $L$. Particularly, the values of $E_{sym}({\rho_{0}})=$ $30.5\pm 3$ MeV and $L=$ $52.5\pm 20$ MeV are simultaneously obtained by combining the constraints from recently extracted $E_{sym}({\rho_{A}=0.1}$ {fm}$^{{-3}})$ with those from recent analyses of neutron skin thickness of Sn isotopes in the same SHF approach. \\ ( http://arxiv.org/abs/1101.5217 , 78kb) ------------------------------------------------------------------------------ \\ arXiv:1101.5350 Date: Thu, 27 Jan 2011 17:56:41 GMT (1344kb) Title: New solution to the puzzle of the long lifetime of 14C Authors: D. Robson Categories: nucl-th nucl-ex Comments: 5 figures \\ A new cluster model solution to the long standing nuclear structure problem of describing the anomalously long lifetime of 14C is presented. Related beta-decay data for 14O to states in 14N, gamma decay data between low lying positive parity states in 14N and the elastic and inelastic magnetic dipole electron scattering from 14N data are all shown to be very accurately described by the model. The shapes of the beta spectra for the A=14 system are also well reproduced by the model. The model invokes four-nucleon tetrahedral symmetric spatial correlations arising from three- and four-nucleon interactions which yields a high degree of SU(4) singlet structure for the clusters and a tetrahedral intrinsic shape for the doubly magic 16O ground state. The large quadrupole moment of the 14N ground state is obtained here for the first time and arises because of the almost 100% d-wave deuteron-like-hole cluster structure inherent in the model. \\ ( http://arxiv.org/abs/1101.5350 , 1344kb) %-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%- ------------------------------------------------------------------------------ \\ arXiv:1010.5439 (*cross-listing*) Date: Tue, 26 Oct 2010 15:55:38 GMT (456kb) Date (revised v2): Wed, 26 Jan 2011 21:34:53 GMT (213kb) Title: Strong longitudinal color field effects in pp collisions at energies available at the Large Hadron Collider Authors: V. Topor Pop (1), M. Gyulassy (2), J. Barrette (1), C. Gale (1), A. Warburton ((1) (1) McGill Univ., Canada, (2) Columbia Univ. NY, USA) Categories: hep-ph hep-ex nucl-ex nucl-th Comments: revtex4.1, 11 pages, 11 figures, updated references, slightly text modifications, accepted for publication in Phys. ReV. C (2011) \\ We study the effect of strong longitudinal color fields (SCF) in p+p reactions up to Large Hadron Collider energies in the framework of the HIJING/BBbar v2.0 model that combines (collinear factorized) pQCD multiple minijet production with soft longitudinal string excitation and hadronization. The default vacuum string tension, kappa0 = 1 GeV/fm, is replaced by an effective power law energy dependent string tension, that increases monotonically with center-of-mass energy. The exponent 0.06 is found sufficient to reproduce well the energy dependence of multiparticle observables in RHIC, Tevatron, as well as recent LHC data. This exponent is found to be only half of that predicted by the Color Glass Saturation model, lambda(CGC)=0.115, where gluon fusion multiparticle production mechanisms are assumed. In HIJING/BBbar v2.0, the rapid growth of central-rapidity density with energy is due to the interplay of copious minijet production and increasing SCF contributions. The large (strange)baryon-to-meson ratios measured at Tevatron energies are well described. A significant enhancement of these ratios is predicted up to the highest LHC energy (14 TeV). The effect of JJbar loops and SCF on baryon-anti-baryon asymmetry and its relation to baryon number transport is also discussed. \\ ( http://arxiv.org/abs/1010.5439 , 213kb) ------------------------------------------------------------------------------ \\ arXiv:1101.5228 (*cross-listing*) Date: Thu, 27 Jan 2011 09:09:01 GMT (27kb) Title: QCD phase diagram using PNJL model with eight-quark interactions Authors: Paramita Deb, Abhijit Bhattacharyya, Sanjay K. Ghosh, Rajarshi Ray and Anirban Lahiri Categories: hep-ph hep-lat nucl-th Comments: Presented at the ICPAQGP-2010, India \\ We present the phase diagram and the fluctuations of different conserved charges like quark number, charge and strangeness at vanishing chemical potential for the 2+1 flavor Polyakov Loop extended Nambu--Jona-Lasinio model with eight-quark interaction terms using three-momentum cutoff regularisation. The main effect of the higher order interaction term is to shift the critical end point to the lower value of the chemical potential and higher value of the temperature. The fluctuations show good qualitative agreement with the lattice data. \\ ( http://arxiv.org/abs/1101.5228 , 27kb) ------------------------------------------------------------------------------ \\ arXiv:1101.5276 (*cross-listing*) Date: Thu, 27 Jan 2011 13:00:05 GMT (1275kb) Title: "Weak Quantum Chaos" and its resistor network modeling Authors: Alexander Stotland, Louis M. Pecora, Doron Cohen Categories: quant-ph cond-mat.mes-hall nucl-th Comments: 17 pages, 11 figures \\ Weakly chaotic or weakly interacting systems have a wide regime where the common random matrix theory modeling does not apply. As an example we consider cold atoms in a nearly integrable optical billiard with displaceable wall ("piston"). The motion is completely chaotic but with small Lyapunov exponent. The Hamiltonian matrix does not look like one taken from a Gaussian ensemble, but rather it is very sparse and textured. This can be characterized by parameters $s$ and $g$ that reflect the percentage of large elements, and their connectivity, respectively. For $g$ we use a resistor network calculation that has a direct relation to the semi-linear response characteristics of the system, hence leading to a novel prediction regarding the rate of heating of cold atoms in optical billiards with vibrating walls. \\ ( http://arxiv.org/abs/1101.5276 , 1275kb) %%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%% ------------------------------------------------------------------------------ \\ arXiv:1007.2076 (*cross-listing*) replaced with revised version Thu, 27 Jan 2011 11:50:40 GMT (47kb) Title: Quark Number Susceptibility in Hard Thermal Loop Perturbation Theory Authors: Najmul Haque and Munshi G. Mustafa Categories: hep-ph hep-lat nucl-th Comments: Sections included; discussion and reference added; 21 pages+ 4 figures \\ ( http://arxiv.org/abs/1007.2076 , 47kb) ------------------------------------------------------------------------------ \\ arXiv:1008.0068 (*cross-listing*) replaced with revised version Thu, 27 Jan 2011 05:49:00 GMT (333kb) Title: Electron in a transverse harmonic cavity Authors: H. Honkanen, P. Maris, J.P. Vary, S.J. Brodsky Categories: hep-ph nucl-th Comments: 4 pages, 3 figures, revised according to referees requests, accepted for PRL Report-no: SLAC-PUB-14212 \\ ( http://arxiv.org/abs/1008.0068 , 333kb) ------------------------------------------------------------------------------ \\ arXiv:1010.2394 (*cross-listing*) replaced with revised version Thu, 27 Jan 2011 08:58:58 GMT (32kb) Title: Correlation between conserved charges in PNJL Model with multi-quark interactions Authors: Abhijit Bhattacharyya, Paramita Deb, Anirban Lahiri and Rajarshi Ray Categories: hep-ph hep-lat nucl-th Journal-ref: Physical Review D 83, 014011 (2011) \\ ( http://arxiv.org/abs/1010.2394 , 32kb) ------------------------------------------------------------------------------ \\ arXiv:1012.3264 (*cross-listing*) replaced with revised version Thu, 27 Jan 2011 00:25:22 GMT (133kb) Title: Chiral Magnetic Effect from Q-balls Authors: Minoru Eto, Koji Hashimoto, Hideaki Iida, Akitsugu Miwa Categories: hep-ph hep-th nucl-th Comments: 4 pages, 3 figures, revtex; v2: minor revision Report-no: RIKEN-MP-9, RIKEN-TH-204 \\ ( http://arxiv.org/abs/1012.3264 , 133kb) ------------------------------------------------------------------------------ \\ arXiv:1101.3378 (*cross-listing*) replaced with revised version Thu, 27 Jan 2011 04:34:32 GMT (164kb) Title: Light flavor asymmetry of nucleon sea Authors: Huiying Song, Xinyu Zhang, Bo-Qiang Ma Categories: hep-ph hep-ex nucl-th Comments: 10 pages, 8 figures, final version to appear in EPJC \\ ( http://arxiv.org/abs/1101.3378 , 164kb) ------------------------------------------------------------------------------ \\ arXiv:1101.4717 replaced with revised version Wed, 26 Jan 2011 22:12:44 GMT (393kb,D) Title: Nuclear Radii of Unstable Nuclei Authors: G. D. Alkhazov, I. S. Novikov, and Yu. Shabelski Categories: nucl-th Comments: 56 pages, 13 figure, to be published in International Journal of Modern Physics E \\ ( http://arxiv.org/abs/1101.4717 , 393kb) %%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%--- For subscribe options to combined physics archives, e-mail To: physics@arXiv.org, Subject: subscribe ----------------------------------------------------------------------------- For help on viewing and making submissions, see http://arXiv.org/help/ For a list of archive mirror sites, see http://arXiv.org/servers.html ----------------------------------------------------------------------------- Third-party submissions cause excessive problems. Author self-submissions are exceedingly preferred. E-mail submissions have been discontinued in favor of better support for Web submissions. See http://arXiv.org/help/uploads