Date: Thu, 29 Sep 11 00:07:09 GMT Subject: nucl-th daily 9 new + 6 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 Tue 27 Sep 11 20:00:00 GMT to Wed 28 Sep 11 20:00:00 GMT ------------------------------------------------------------------------------ \\ arXiv:1109.6123 Date: Wed, 28 Sep 2011 08:28:24 GMT (104kb) Title: Spin observables in the two-nucleon capture and dissociation processes at low energies Authors: Y.-H. Song, C. H. Hyun, S.-I. Ando, K. Kubodera Categories: nucl-th Comments: 4 pages, 2 figures. Contribution to APFB2011, August 22-26, 2011, Seoul, Korea \\ Spin observables in radiative neutron capture on a proton and its inverse process, photodisintegration of the deuteron are calculated using a pionless effective field theory with di-baryon fields. Good agreement with the results of existing standard nuclear physics approach is obtained at very low energies. As energy increases, however, the discrepancy between the effective field theory and the standard nuclear physics approach becomes substantial. We discuss the origin of the difference. \\ ( http://arxiv.org/abs/1109.6123 , 104kb) ------------------------------------------------------------------------------ \\ arXiv:1109.6130 Date: Wed, 28 Sep 2011 09:01:59 GMT (40kb) Title: Effect of isospin degree of freedom on the counterbalancing of collective transverse in-plane flow Authors: Aman D. Sood Categories: nucl-th Comments: 3 pages, 2 figs, DAE BRNS Symposium on Nuclear Physics Dec 26-30, (2011), Visakhapatnam A.P. INDIA \\ Here we aim to understand the effect of isospin dependence of cross section and Coulomb repulsion on the counterbalancing of collective flow \\ ( http://arxiv.org/abs/1109.6130 , 40kb) ------------------------------------------------------------------------------ \\ arXiv:1109.6134 Date: Wed, 28 Sep 2011 09:12:23 GMT (45kb) Title: Observable to explore high density behaviour of symmetry energy Authors: Aman D. Sood Categories: nucl-th Comments: 3 pages, 2 figs, DAE BRNS Symposium on Nuclear Physics Dec 26-30, (2011), Visakhapatnam A.P. INDIA \\ We aim to see the sensitivity of collective transverse in-plane flow to symmetry energy at low as well as high densities and also to see the effect of different density dependencies of symmetry energy on the same. \\ ( http://arxiv.org/abs/1109.6134 , 45kb) ------------------------------------------------------------------------------ \\ arXiv:1109.6136 Date: Wed, 28 Sep 2011 09:18:11 GMT (23kb) Title: Effect of isospin dependence of cross section on symmetric and neutron rich systems Authors: Aman D. Sood Categories: nucl-th Comments: 3 pages, 1 figs, DAE BRNS Symposium on Nuclear Physics Dec 26-30, (2011), Visakhapatnam A.P. INDIA \\ We aim to explore the effect of isospin dependence of cross section on symmetric and neutron rich system. We also aim to explore whether the analysis is affacted if one discusses in terms of "$E_{bal}$ as a function of N/Z or N/A" of the system. \\ ( http://arxiv.org/abs/1109.6136 , 23kb) ------------------------------------------------------------------------------ \\ arXiv:1109.6139 Date: Wed, 28 Sep 2011 09:24:10 GMT (42kb) Title: Role of asymmetry of the reaction and momentum dependent interactions on the balance energy for neutron rich nuclei Authors: Aman D. Sood Categories: nucl-th Comments: 3 pages, 2 figs, DAE BRNS Symposium on Nuclear Physics Dec 26-30, (2011), Visakhapatnam A.P. INDIA \\ We present a systematic study of disappearance of flow i.e. balance energy $E_{bal}$ for an isotopic series of Ca with N/Z varying from 1 to 2 for different density dependences of symmetry energies. We also extend this study for asymmetric reactions having radioactive projectile and stable target. \\ ( http://arxiv.org/abs/1109.6139 , 42kb) ------------------------------------------------------------------------------ \\ arXiv:1109.6143 Date: Wed, 28 Sep 2011 09:29:39 GMT (39kb) Title: Mass dependence of balance energy for different N/Z ratio Authors: Aman D. Sood Categories: nucl-th Comments: 2 pages, 2 figs, DAE BRNS Symposium on Nuclear Physics Dec 26-30, (2011), Visakhapatnam A.P. INDIA \\ We present the study for the mass dependence of E$_{bal}$ for various N/Z ratios covering pure symmetric systems to highly neutron-rich ones. \\ ( http://arxiv.org/abs/1109.6143 , 39kb) ------------------------------------------------------------------------------ \\ arXiv:1109.6230 Date: Wed, 28 Sep 2011 14:42:59 GMT (58kb) Title: Ab-initio self-consistent Gorkov-Green's function calculations of semi-magic nuclei - I. Formalism at second order with a two-nucleon interaction Authors: V. Soma, T. Duguet, C. Barbieri Categories: nucl-th Comments: 38 pages \\ An ab-initio calculation scheme for finite nuclei based on self-consistent Green's functions in the Gorkov formalism is developed. It aims at describing properties of doubly-magic and semi-magic nuclei employing state-of-the-art microscopic nuclear interactions and explicitly treating pairing correlations through the breaking of U(1) symmetry associated with particle number conservation. The present paper introduces the formalism, necessary to undertake applications at (self-consistent) second-order using two-nucleon interactions, in a detailed and self-contained fashion. First applications of such a scheme will be reported soon in a forthcoming publication. Future works will extend the present scheme to include three-nucleon interactions and implement more advanced truncation schemes. \\ ( http://arxiv.org/abs/1109.6230 , 58kb) ------------------------------------------------------------------------------ \\ arXiv:1109.6255 Date: Wed, 28 Sep 2011 16:06:26 GMT (37kb) Title: Beyond mean-field approach to heavy-ion reactions around the Coulomb barrier Authors: Kouhei Washiyama, Denis Lacroix, Sakir Ayik and B\"ulent Yilmaz Categories: nucl-th Comments: 6 pages, 6 figures. A talk given at the FUSION11, May 2-6, 2011, Saint-Malo, France \\ Dissipation and fluctuations of one-body observables in heavy-ion reactions around the Coulomb barrier are investigated with a microscopic stochastic mean-field approach. By projecting the stochastic mean-field dynamics on a suitable collective path, transport coefficients associated with the relative distance between colliding nuclei and a fragment mass are extracted. Although microscopic mean-field approach is know to underestimate the variance of fragment mass distribution, the description of the variance is much improved by the stochastic mean-field method. While fluctuations are consistent with the empirical (semiclassical) analysis of the experimental data, concerning mean values of macroscopic variables the semiclassical description breaks down below the Coulomb barrier. \\ ( http://arxiv.org/abs/1109.6255 , 37kb) ------------------------------------------------------------------------------ \\ arXiv:1109.6300 Date: Wed, 28 Sep 2011 19:09:18 GMT (79kb) Title: Spectra of Identified Hadrons in Pb-Pb Collisions at LHC Authors: Rudolph C. Hwa and Lilin Zhu Categories: nucl-th nucl-ex Comments: 25 pages, 9 figures \\ The transverse momentum distributions of identified hadrons produced in Pb-Pb collisions at the Large Hadron Collider (LHC) are studied in the low and intermediate range for $p_T<5$ GeV/c. All four spectra ($\pi, K, p, \Lambda$) can be well reproduced in the recombination model based on a common thermal parton distribution of light and strange quarks and on shower partons emitted in hard and semihard jets. Two essential parameters are adjusted to fit the data, one being the inverse slope of the thermal distribution and the other revealing the degree of momentum degradation in the medium. Various combinations of thermal and shower parton components are calculated, showing the dominance of minijets. The effect of minijets is to produce harder baryons than mesons resulting in their ratio to peak at around $p_T \sim 3$ GeV/c. Substantial portion of the jet energy is found to be lost to the dense medium before the partons emerge at the surface to undergo hadronization by recombination. \\ ( http://arxiv.org/abs/1109.6300 , 79kb) %-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%- ------------------------------------------------------------------------------ \\ arXiv:1109.6066 (*cross-listing*) Date: Wed, 28 Sep 2011 00:19:19 GMT (23kb) Title: Fluid QCD approach for quark-gluon plasma in stellar structure Authors: T.P. Djun, L.T. Handoko Categories: hep-ph gr-qc nucl-th Comments: 7 pages, Proceeding of the Conference in Honour of Murray Gell-Mann's 80th Birthday : Quantum Mechanics, Elementary Particles, Quantum Cosmology, Complexity (2011) 419-425 Report-no: FISIKALIPI-10033 DOI: 10.1142/9789814335614_0040 \\ The quark-gluon plasma in stellar structure is investigated using the fluid-like QCD approach. The classical energy momentum tensor relevant for high energy and hot plasma having the nature of fluid bulk of gluon sea is calculated within the model. The transition of gluon field from point particle field inside stable hadrons to relativistic fluid field in hot plasma and vice versa is briefly discussed. The results are applied to construct the equation of state using the Tolman--Oppenheimer--Volkoff equation to describe the hot plasma dominated stellar structure. \\ ( http://arxiv.org/abs/1109.6066 , 23kb) ------------------------------------------------------------------------------ \\ arXiv:1109.6078 (*cross-listing*) Date: Wed, 28 Sep 2011 02:20:49 GMT (59kb,D) Title: Upper Limit on the molecular resonance strengths in the ${}^{12}$C+${}^{12}$C fusion reaction Authors: X. Tang, X. Fang, B. Bucher, H. Esbensen, C. L. Jiang, K. E. Rehm, and C. J. Lin Categories: nucl-ex astro-ph.SR nucl-th Comments: 4 pages, 3 figures, FUSION11 conference proceeding \\ Carbon burning is a crucial process for a number of important astrophysical scenarios. The lowest measured energy is around E$_{\rm c.m.}$=2.1 MeV, only partially overlapping with the energy range of astrophysical interest. The currently adopted reaction rates are based on an extrapolation which is highly uncertain because of potential resonances existing in the unmeasured energy range and the complication of the effective nuclear potential. By comparing the cross sections of the three carbon isotope fusion reactions, ${}^{12}$C+${}^{12}$C, ${}^{12}$C+${}^{13}$C and ${}^{13}$C+${}^{13}$C, we have established an upper limit on the molecular resonance strengths in ${}^{12}$C+${}^{12}$C fusion reaction. The preliminary results are presented and the impact on nuclear astrophysics is discussed. \\ ( http://arxiv.org/abs/1109.6078 , 59kb) ------------------------------------------------------------------------------ \\ arXiv:1109.6187 (*cross-listing*) Date: Wed, 28 Sep 2011 12:42:17 GMT (206kb) Title: A short review of the theory of hard exclusive processes Authors: Samuel Wallon Categories: hep-ph hep-ex nucl-th Comments: 27 pages, 18 figures, Invited review talk presented at the workshop "30 years of strong interactions", Spa, Belgium, 6-8 April 2011 Report-no: LPT 11-81 \\ We first present an introduction to the theory of hard exclusive processes. We then illustrate this theory by a few selected examples. The last part is devoted to the most recent developments in the asymptotical energy limit. \\ ( http://arxiv.org/abs/1109.6187 , 206kb) ------------------------------------------------------------------------------ \\ arXiv:1109.6197 (*cross-listing*) Date: Wed, 28 Sep 2011 13:19:19 GMT (31kb) Title: Extracting a free neutron structure function from proton and deuteron deep inelastic scattering data Authors: O. Hen, E. Piasetzky, R. Shneor, L. B. Weinstein, D. W. Higinbotham Categories: hep-ph nucl-ex nucl-th Comments: DIS 2011 Conference proceeding \\ Due to the lack of a free neutron target the structure function of the neutron cannot be measured directly and is therefore extracted from deuteron and proton DIS data. Because the deuteron is a bound nuclear system, in order to extract the neutron structure function, one needs to apply model dependent theoretical corrections which dominate the uncertainty at the large xB region. We present here a correlation between the magnitude of the EMC effect and the amount of two nucleon Short Range Correlation (2N-SRC) pairs in nuclei. Using this correlation we propose a phenomenological procedure to extract the free neutron structure function in the xB range of 0.3 to 0.7. \\ ( http://arxiv.org/abs/1109.6197 , 31kb) ------------------------------------------------------------------------------ \\ arXiv:1109.6289 (*cross-listing*) Date: Wed, 28 Sep 2011 18:37:04 GMT (68kb) Title: Higher flow harmonics from (3+1)D event-by-event viscous hydrodynamics Authors: Bjoern Schenke, Sangyong Jeon and Charles Gale Categories: hep-ph nucl-th Comments: 10 pages, 13 figures \\ We present event-by-event viscous hydrodynamic calculations of the anisotropic flow coefficients v_2 to v_5 for heavy-ion collisions at the Relativistic Heavy-Ion Collider (RHIC). We study the dependence of different flow harmonics on shear viscosity and the morphology of the initial state. v_3 and higher flow harmonics exhibit a particularly strong dependence on both the initial granularity and shear viscosity. We argue that a combined analysis of all available flow harmonics will allow to determine eta/s of the quark gluon plasma precisely. Presented results strongly hint at a value (eta/s)_QGP < 2/4pi at RHIC. Furthermore, we demonstrate the effect of shear viscosity on pseudo-rapidity spectra and the mean transverse momentum as a function of rapidity. \\ ( http://arxiv.org/abs/1109.6289 , 68kb) ------------------------------------------------------------------------------ \\ arXiv:1109.6293 (*cross-listing*) Date: Wed, 28 Sep 2011 18:48:07 GMT (16kb) Title: On the linearly polarized gluon distributions in the color dipole model Authors: Fabio Dominguez, Jian-Wei Qiu, Bo-Wen Xiao, Feng Yuan Categories: hep-ph nucl-th Comments: 10 pages \\ We show that the linearly polarized gluon distributions appear in the color dipole model as we derive the full cross sections of the DIS dijet production and the Drell-Yan dijet ($\gamma^*$ jet correlation) process. Together with the normal Weizs\"acker-Williams gluon distribution, the linearly polarized one will contribute to the DIS dijet production cross section as the coefficient of the $\cos(2 \Delta \phi) $ term in the correlation limit. We also derive the exact results for the cross section of the Drell-Yan dijet process, and find that the linearly polarized dipole gluon distribution which is identical to the normal dipole gluon distribution involves in the cross section. The results obtained in this paper agree with the previous transverse momentum dependent factorization study. We further derive the small-$x$ evolution of these linearly polarized gluon distributions and find that they rise as $x$ gets small at high energy. \\ ( http://arxiv.org/abs/1109.6293 , 16kb) %%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%% ------------------------------------------------------------------------------ \\ arXiv:1103.4333 (*cross-listing*) replaced with revised version Wed, 28 Sep 2011 06:56:53 GMT (549kb,D) Title: Shear viscosity, cavitation and hydrodynamics at LHC Authors: Jitesh R. Bhatt, Hiranmaya Mishra and V. Sreekanth Categories: hep-ph nucl-th Comments: 5 pages, 5 figures, to appear in Phys. Lett. B \\ ( http://arxiv.org/abs/1103.4333 , 549kb) ------------------------------------------------------------------------------ \\ arXiv:1104.1168 (*cross-listing*) replaced with revised version Wed, 28 Sep 2011 17:41:41 GMT (11kb) Title: Longitudinal Rescaling of Quantum Electrodynamics Authors: Axel Cortes Cubero and Peter Orland Categories: hep-th hep-ph nucl-th Comments: Version to appear in Phys. Rev. D \\ ( http://arxiv.org/abs/1104.1168 , 11kb) ------------------------------------------------------------------------------ \\ arXiv:1107.1067 replaced with revised version Wed, 28 Sep 2011 13:27:19 GMT (35kb) Title: Effect of the density dependent symmetry energy on fragmentation Authors: Karan Singh Vinayak and Suneel Kumar Categories: nucl-th Comments: Accepted for Oral Presentation in Rutherford Centennial Conference 8-10 Aug, 2011, University of Manchester, UK \\ ( http://arxiv.org/abs/1107.1067 , 35kb) ------------------------------------------------------------------------------ \\ arXiv:1107.4003 replaced with revised version Tue, 27 Sep 2011 20:52:09 GMT (708kb) Title: Selected highlights from the study of mesons Authors: Lei Chang, Craig D. Roberts and Peter C. Tandy Categories: nucl-th hep-lat hep-ph nucl-ex Comments: 28 pages, 15 figures, 2 tables. Version to appear in the Chinese Journal of Physics \\ ( http://arxiv.org/abs/1107.4003 , 708kb) ------------------------------------------------------------------------------ \\ arXiv:1108.4147 replaced with revised version Wed, 28 Sep 2011 00:39:16 GMT (62kb) Title: Renormalization persistency of tensor force in nuclei Authors: Naofumi Tsunoda, Takaharu Otsuka, Koshiroh Tsukiyama, Morten Hjorth-Jensen Categories: nucl-th Comments: 13 pages, 8 figures \\ ( http://arxiv.org/abs/1108.4147 , 62kb) ------------------------------------------------------------------------------ \\ arXiv:1108.6129 replaced with revised version Wed, 28 Sep 2011 18:02:43 GMT (525kb) Title: Rare dileptonic decays of \Lambda_b in a quark model Authors: Lonnie Mott and Winston Roberts Categories: nucl-th hep-ex hep-ph nucl-ex Comments: Updated info on experimental status and updated references \\ ( http://arxiv.org/abs/1108.6129 , 525kb) %%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%--- 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