Date: Fri, 27 Sep 19 00:31:48 GMT Subject: nucl-th daily 7 new + 2 crosses received by eprepget DONATE to arXiv: Please join the Simons Foundation and our generous member organizations in supporting arXiv during our giving campaign September 23-27. 100% of your contribution will fund improvements and new initiatives to benefit arXiv's global scientific community. Donate: https://bit.ly/arXivDONATE6 ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ 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 from Wed 25 Sep 19 18:00:00 GMT to Thu 26 Sep 19 18:00:00 GMT ------------------------------------------------------------------------------ \\ arXiv:1909.11826 Date: Thu, 26 Sep 2019 00:28:10 GMT (74kb) Title: Bayesian truncation errors in equations of state of nuclear matter with chiral nucleon-nucleon potentials Authors: Jinniu Hu, Peiyu Wei, and Ying Zhang Categories: nucl-th Comments: 12 pages, 4 figures, accepted to Phys. Lett. B \\ The truncation errors in equations of state (EOSs) of nuclear matter derived from the chiral nucleon-nucleon ($NN$) potentials at different expansion orders are analyzed by a Bayesian model. These EOSs are expanded as functions of a dimensionless parameter, $Q$, which is determined by Fermi momentum, $k_F$ and breakdown scale, $\Lambda_b$. The degree-of-belief (DoB) intervals predicted by the chiral effective field theory are calculated within the corresponding expansion coefficients and the specific prior probability distribution functions in terms of Bayes theorem. The truncation errors of EOSs, generated by the DoB intervals, exhibit good order-by-order convergences with different chiral expansion order potentials. When DoB is considered as $1\sigma$ credibility, i.e., $68.27\%$ confidence interval, the truncation errors of binding energy per nucleon in symmetric nuclear matter and pure neutron matter are consistent with the results given by a simple error analysis method proposed by Epelbaum, {\it et al.} Finally, the reasonable values of the breakdown scale $\Lambda_b$ in nuclear matter are discussed through consistency checks of Bayesian method based on the calculations of success rate. \\ ( https://arxiv.org/abs/1909.11826 , 74kb) ------------------------------------------------------------------------------ \\ arXiv:1909.11935 Date: Thu, 26 Sep 2019 06:47:16 GMT (1161kb) Title: The ANL-Osaka Partial-Wave Amplitudes of $\pi N$ and $\gamma N$ Reactions Authors: H. Kamano, T.-S. H. Lee, S.X. Nakamura, T. Sato Categories: nucl-th hep-ex hep-ph nucl-ex Comments: 55 pages, 33 figures \\ The determination of the Argonne National Laboratory-Osaka University (ANL-Osaka) Partial-Wave Amplitudes (PWA) of $\pi N$ and $\gamma N$ Reactions is reviewed. The predicted PWA are presented on a web page (https://www.phy.anl.gov/theory/research/anl-osaka-pwa). The formulas are given for using the predicted PWA to calculate the cross sections of (1) meson-baryon ($MB$) scattering $MB \rightarrow M'B'$ with $MB, M'B'= \pi N, \eta N, K\Lambda, K\Sigma$, (2) two-pion production $\pi N \rightarrow \pi\Delta, \rho N, \sigma N \rightarrow \pi\pi N$, (3) Meson photoproduction $\gamma N \rightarrow \pi N, \eta N, K\Lambda, K\Sigma$, (4) Pion electroproduction $N(e,e'\pi)N$, (5) inclusive $N(e,e')X$. We also present sample results from our fits to the data. \\ ( https://arxiv.org/abs/1909.11935 , 1161kb) ------------------------------------------------------------------------------ \\ arXiv:1909.12053 Date: Thu, 26 Sep 2019 12:38:46 GMT (66kb) Title: The collective excitation of nuclear matter in a bosonizated formula of Landau Fermi liquid theory Authors: Bao-Xi Sun Categories: nucl-th Comments: 18 pages, 3 figures and 2 tables, Nonlinear self-interaction terms of the scalar meson field are taken into account \\ The collective excitation of the nuclear matter is analyzed in a bosonizated formula of Landau Fermi liquid theory. When the nonlinear self-interacting terms of the scalar meson are taken into account in the Walecka model, the collective excitation energies of the nuclear matter can be obtained self-consistently. It shows that the calculation results are consistent with the corresponding experimental data of the nucleus ${}^{208}Pb$ when the quantum number of the orientation of the orbital angular momentum $m$ is zero. Moreover, the cases with the nonzero $m$ values are also studied, it manifests that the collective excitation energy with the fixed nonzero $m$ value are almost invariant when the quantum number of the orbital angular momentum $l$ changes. However, the collective excitation energy of the nuclear matter decreases with the absolute value of $m$ increasing. The direct interaction between two nucleons near the Fermi surface only changes the Fermi velocity, while the exchange interaction causes the collective excitation of the nuclear matter. At this point, it is different from the traditional views in nuclear physics, which announce that the random phase approximation is essential to generate the nuclear collective excitation states. \\ ( https://arxiv.org/abs/1909.12053 , 66kb) ------------------------------------------------------------------------------ \\ arXiv:1909.12061 Date: Thu, 26 Sep 2019 12:47:01 GMT (140kb,D) Title: Exploring continuum structures in reactions with three-body nuclei Authors: J. Casal, M. G\'omez-Ramos, A. M. Moro and A. Corsi Categories: nucl-th nucl-ex Comments: 5 pages; proceedings of the INPC2019 \\ The Transfer to the Continuum method has been applied to describe the $^{11}\text{Li}(p,pn)$ and $^{14}\text{Be}(p,pn)$ reactions in inverse kinematics, using structure overlaps computed within a full three-body model for the projectile. Calculations agree with the available experimental data on the unbound $^{10}$Li and $^{13}$Be nuclei. \\ ( https://arxiv.org/abs/1909.12061 , 140kb) ------------------------------------------------------------------------------ \\ arXiv:1909.12071 Date: Thu, 26 Sep 2019 13:03:58 GMT (88kb) Title: Implications of the fermion vacuum term in the extended SU(3) Quark Meson model on compact stars properties Authors: Andreas Zacchi and Juergen Schaffner-Bielich Categories: nucl-th astro-ph.HE hep-ph Comments: 12 pages, 8 figures \\ We study the impact of the fermion vacuum term in the SU(3) quark meson model on the equation of state and determine the vacuum parameters for various sigma meson masses. We examine its influence on the equation of state and on the resulting mass radius relations for compact stars. The tidal deformability $\Lambda$ of the stars is studied and compared to the results of the mean field approximation. Parameter sets which fulfill the tidal deformability bounds of GW170817 together with the observed two solar mass limit turn out to be restricted to a quite small parameter range in the mean field approximation. The extended version of the model does not yield solutions fulfilling both constraints. Furthermore, no first order chiral phase transition is found in the extended version of the model, not allowing for the twin star solutions found in the mean field approximation. \\ ( https://arxiv.org/abs/1909.12071 , 88kb) ------------------------------------------------------------------------------ \\ arXiv:1909.12206 Date: Thu, 26 Sep 2019 15:53:37 GMT (909kb,D) Title: $\mathbf{\beta}$-delayed proton emission from $\mathbf{^{11}}$Be in effective field theory Authors: Zichao Yang, Wael Elkamhawy, Hans-Werner Hammer, Lucas Platter Categories: nucl-th nucl-ex Comments: 5 pages, 4 figures Report-no: INT-PUB-19-045 \\ We calculate the rate of the rare decay $^{11}$Be into $^{10}\text{Be} + p +e^- + \bar{\nu}_e$ using Halo effective field theory, thereby describing the process of beta delayed proton emission. We assume a shallow $1/2 ^+$ resonance in the $^{10}$Be$-p$ system with an energy and width consistent with a recent experiment. Taking into account contributions from both Fermi and Gamow-Teller decay, we obtain $b_p = 2.9_{-2.5}^{+11.1}\text{(exp.)}_{-0.1}^{+4.4}\text{(theo.)} \times 10^{-5}$ for the branching ratio of this decay, which compares well with the measured branching ratio $b_p = 1.3(3)\times 10^{-5}$. Our results show that the experimental measurements of branching ratio and resonance parameters are consistent with each other. We demonstrate that a wide range of combinations of resonance energies and widths as well as a large negative scattering length can reproduce the measured branching ratio. Thus no exotic mechanism (such as beyond the standard model physics) is needed to explain the experimental decay rate. \\ ( https://arxiv.org/abs/1909.12206 , 909kb) ------------------------------------------------------------------------------ \\ arXiv:1909.12261 Date: Thu, 26 Sep 2019 17:17:05 GMT (61kb,D) Title: Catching a glimpse of the parton structure of the bound proton Authors: Sara Fucini, Sergio Scopetta, Michele Viviani Categories: nucl-th hep-ph nucl-ex Comments: 5 pages, 4 figures \\ A new generation of experiments is expected to shed light on the elusive parton structure of the bound proton. One of the most promising directions is incoherent deeply virtual Compton scattering, which can provide a tomographic view of the bound proton. The first measurement has been recently performed, using $^4$He targets at Jefferson Lab. Here, a rigorous Impulse Approximation analysis of this process is presented. State-of-the-art models of the nuclear spectral function and of the parton structure of the bound proton are used. Leading twist expressions for the relevant scattering amplitudes for a bound moving proton have been obtained. A good overall agreement with the data is obtained, in particular at high values of the initial photon virtuality, as expected in general. The observed big difference between results for the bound proton and those for the free one turns out to be due in small part to modifications of the parton structure, and rather it has to be related to kinematical nuclear effects. The analysis demonstrates that the comparison of the results of this approach, based on a conventional description, with future precise data, has the potential to expose exotic quark and gluon effects in nuclei. \\ ( https://arxiv.org/abs/1909.12261 , 61kb) %-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%- ------------------------------------------------------------------------------ \\ arXiv:1909.12246 (*cross-listing*) Date: Thu, 26 Sep 2019 16:45:49 GMT (117kb,D) Title: Probing the evolution of heavy-ion collisions using direct photon interferometry Authors: Oscar Garcia-Montero, Nicole L\"oher, Aleksas Mazeliauskas, J\"urgen Berges and Klaus Reygers Categories: hep-ph nucl-ex nucl-th \\ We investigate the measurement of Hanbury Brown-Twiss (HBT) photon correlations as an experimental tool to discriminate different sources of photon enhancement, which are proposed to simultaneously reproduce the direct photon yield and the azimuthal anisotropy measured in nuclear collisions at RHIC and the LHC. To showcase this, we consider two different scenarios in which we enhance the yields from standard hydrodynamical simulations. In the first, additional photons are produced from the early pre-equilibrium stage computed from the \textit{bottom-up} thermalization scenario. In the second, the thermal rates are enhanced close to the pseudo-critical temperature $T_c\approx 155\,\text{MeV}$ using a phenomenological ansatz. We compute the correlators for relative momenta $q_o, \,q_s$ and $q_l$ for different transverse pair momenta, $K_\perp$, and find that the longitudinal correlation is the most sensitive to different photon sources. Our results also demonstrate that including anisotropic pre-equilibrium rates enhances non-Gaussianities in the correlators, which can be quantified using the kurtosis of the correlators. Finally, we study the feasibility of measuring a direct photon HBT signal in the upcoming high-luminosity LHC runs. Considering only statistical uncertainties, we find that with the projected $\sim 10^{10}$ heavy ion events a measurement of the HBT correlations for $K_\perp<1\, \text{GeV}$ is statistically significant. \\ ( https://arxiv.org/abs/1909.12246 , 117kb) ------------------------------------------------------------------------------ \\ arXiv:1909.12294 (*cross-listing*) Date: Thu, 26 Sep 2019 17:57:49 GMT (167kb,D) Title: Non-equilibrium photons from the \textit{bottom-up} thermalization scenario Authors: Oscar Garcia-Montero Categories: hep-ph nucl-ex nucl-th \\ In this work, I calculate the $p_\perp$ resolved spectra for the three stages of the \textit{bottom-up} scenario, which are comparable to the thermal contribution, particularly at higher values of the saturation scale $Q_S^2$. Analytical solutions are obtained by including a parametrization of scaling solutions from far-from-equilibrium classical statistical lattice simulations into a small angle kinetic rate. Furthermore, a theoretically motivated ansatz is used to account for near-collinear enhancement of the low-$p_\perp$ radiation. The system is phenomenologically constrained using the charge hadron multiplicities from LHC and RHIC as in previous parametric estimates and fair agreement with the data available for photons was found. I find that for this realistic set of parameters, the contribution from the thermalizing glasma dominates the excess photons. \\ ( https://arxiv.org/abs/1909.12294 , 167kb) %%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%% ------------------------------------------------------------------------------ \\ arXiv:1711.04053 (*cross-listing*) replaced with revised version Thu, 26 Sep 2019 11:11:18 GMT (3859kb,D) Title: Gravitomagnetism and Pulsar Beam Precession near a Kerr Black Hole Authors: Prashant Kocherlakota, Pankaj S. Joshi, Sudip Bhattacharyya, Chandrachur Chakraborty, Alak Ray and Sounak Biswas Categories: astro-ph.HE gr-qc hep-th nucl-th Comments: 27 pages, 8 figures, 1 Table; To appear in MNRAS DOI: 10.1093/mnras/stz2538 \\ ( https://arxiv.org/abs/1711.04053 , 3859kb) ------------------------------------------------------------------------------ \\ arXiv:1802.00017 replaced with revised version Thu, 26 Sep 2019 14:34:56 GMT (1244kb,D) Title: Superfluidity in nuclear systems and neutron stars Authors: Armen Sedrakian, John W. Clark Categories: nucl-th astro-ph.HE cond-mat.quant-gas Comments: Review article, 63 pages, 28 figures, v4 matches journal version. [v2 and v3: 58 pages, 28 figures, v1: 50 pages, 27 figures] Journal-ref: Eur. Phys. J. A (2019) 55: 167 DOI: 10.1140/epja/i2019-12863-6 \\ ( https://arxiv.org/abs/1802.00017 , 1244kb) ------------------------------------------------------------------------------ \\ arXiv:1812.10289 (*cross-listing*) replaced with revised version Thu, 26 Sep 2019 14:45:05 GMT (481kb,D) Title: Ultrahigh-energy cosmic-ray nuclei and neutrinos from engine-driven supernovae Authors: B. Theodore Zhang, Kohta Murase Categories: astro-ph.HE astro-ph.SR hep-ph nucl-th Comments: 16 pages, 17 figures, expanded and revised version, accepted for publication in Physical Review D \\ ( https://arxiv.org/abs/1812.10289 , 481kb) ------------------------------------------------------------------------------ \\ arXiv:1903.09832 (*cross-listing*) replaced with revised version Thu, 26 Sep 2019 14:48:32 GMT (986kb,D) Title: Non-quadratic improved Hessian PDF reweighting and application to CMS dijet measurements at 5.02 TeV Authors: Kari J. Eskola, Petja Paakkinen, Hannu Paukkunen Categories: hep-ph nucl-th Comments: 15 pages, 13 figures, corresponds to the published version Journal-ref: Eur.Phys.J. C79 (2019) no.6, 511 DOI: 10.1140/epjc/s10052-019-6982-2 \\ ( https://arxiv.org/abs/1903.09832 , 986kb) ------------------------------------------------------------------------------ \\ arXiv:1904.12832 (*cross-listing*) replaced with revised version Thu, 26 Sep 2019 10:37:04 GMT (113kb,D) Title: Viscosity spectral functions of resonating fermions in the quantum virial expansion Authors: Yusuke Nishida Categories: cond-mat.quant-gas cond-mat.stat-mech nucl-th Comments: 16 single-column pages, 1 multi-panel figure; (v2) minor improvements and added appendix on the bulk viscosity formula at O(z^3); (v3) published version Journal-ref: Annals of Physics 410 (2019) 167949 DOI: 10.1016/j.aop.2019.167949 \\ ( https://arxiv.org/abs/1904.12832 , 113kb) ------------------------------------------------------------------------------ \\ arXiv:1906.05766 (*cross-listing*) replaced with revised version Thu, 26 Sep 2019 17:48:13 GMT (452kb,D) Title: Chromopolarizabilities of bottomonia from the $\Upsilon(2S,3S,4S) \to \Upsilon(1S,2S)\pi\pi$ transitions Authors: Yun-Hua Chen, Feng-Kun Guo Categories: hep-ph hep-ex hep-lat nucl-th Comments: 14 pages, 3 figures, more discussions added Journal-ref: Phys. Rev. D 100, 054035 (2019) DOI: 10.1103/PhysRevD.100.054035 \\ ( https://arxiv.org/abs/1906.05766 , 452kb) %%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%--- 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/