Tue·Apr 2, 2019Tuesday·April 2, 2019

1. 01*

   New $\gamma$-ray Transitions Observed in ${}^{19}$Ne with Implications for the ${}^{15}$O($\alpha$,$\gamma$)${}^{19}$Ne Reaction Rate

   M. R. Hall🇺🇸 · D. W. Bardayan🇺🇸 · T. Baugher🇺🇸 · A. Lepailleur🇫🇷 · S. D. Pain🇺🇸 · A. Ratkiewicz · S. Ahn🇺🇸 · J. M. Allen🇺🇸 · J. T. Anderson🇺🇸 · A. D. Ayangeakaa🇺🇸 · J. C. Blackmon · S. Burcher🇺🇸 and 25 other authors

   The ${}^{15}$O($\alpha$,$\gamma$)${}^{19}$Ne reaction is responsible for breakout from the hot CNO cycle in Type I x-ray bursts. Understanding the properties of resonances between $E_x=4$ and 5 MeV in ${}^{19}$Ne is crucial in the calculation of this reaction rate. The spins and parities of these states are well known, with the exception of the 4.14- and 4.20-MeV states, which have adopted spin-parities of 9/2${}^{-}$ and 7/2${}^{-}$, respectively. Gamma-ray transitions from these states were studied using triton-$\gamma$-$\gamma$ coincidences from the ${}^{19}$F(${}^3$He,$t\gamma$)${}^{19}$Ne reaction measured with GODDESS (Gammasphere ORRUBA Dual Detectors for Experimental Structure Studies) at Argonne National Laboratory. The observed transitions from the 4.14- and 4.20-MeV states provide strong evidence that the $J^{\pi }$ values are actually 7/2${}^{-}$ and 9/2${}^{-}$, respectively. These assignments are consistent with the values in the ${}^{19}$F mirror nucleus and in contrast to previously accepted assignments.

   nucl-exPRC(2019)·10 citations
2. 02*

   The Hoyle State in Relativistic ${}^{12}$C Dissociation

   D. A. Artemenkov🇷🇺 · M. Haiduc🇷🇴 · N.K. Kornegrutsa · E. Mitsova · N.G. Peresadko · V.V. Rusakova🇷🇺 · R. Stanoeva🇧🇬 · A.A. Zaitsev🇷🇺 · P.I. Zarubin🇷🇺 · I.G. Zarubina🇷🇺

   Production of $\alpha$-particle triples in the Hoyle state (HS) in dissociation of ${}^{12}$C nuclei at 3.65 and 0.42 $A$ GeV in nuclear track emulsion is revealed by the invariant mass approach. Contribution of the HS to the dissociation ${}^{12}$C $\to$ 3$\alpha$ is (11 $\pm$ 3) \%. Reanalysis of data on coherent dissociation ${}^{16}$O $\to$ 4$\alpha$ at 3.65 $A$ GeV is revealed the HS contribution of (22 $\pm$ 2) \%.

   nucl-exSpringer Proc.Phys.(2020)·6 citations
3. 03*

   Extraction of the Heavy-Quark Potential from Bottomonium Observables in Heavy-Ion Collisions

   Xiaojian Du🇺🇸 · Shuai Y.F. Liu🇺🇸 · Ralf Rapp🇺🇸

   The in-medium color potential is a fundamental quantity for understanding the properties of the strongly coupled quark-gluon plasma (sQGP). Open and hidden heavy-flavor (HF) production in ultrarelativistic heavy-ion collisions (URHICs) has been found to be a sensitive probe of this potential. Here we utilize a previously developed quarkonium transport approach in combination with insights from open HF diffusion to extract the color-singlet potential from experimental results on ${\rm Y}$ production in URHICs. Starting from a parameterized trial potential, we evaluate the ${\rm Y}$ transport parameters and conduct systematic fits to available data for the centrality dependence of ground and excited states at RHIC and the LHC. The best fits and their statistical significance are converted into a temperature-dependent potential. Including nonperturbative effects in the dissociation rate guided from open HF phenomenology, we extract a rather strongly coupled potential with substantial remnants of the long-range confining force in the QGP.

   ↳ nucl-thhep-phnucl-exPLB(2019)·41 citations
4. 04*

   Transport approaches for the Description of Intermediate-Energy Heavy-Ion Collisions

   Jun Xu🇨🇳

   The transport approach is a useful tool to study dynamics of non-equilibrium systems. For heavy-ion collisions at intermediate energies, where both the smooth nucleon potential and the hard-core nucleon-nucleon collision are important, the dynamics are properly described by two families of transport models, i.e., the Boltzmann-Uehling-Uhlenbeck approach and the quantum molecular dynamics approach. These transport models have been extensively used to extract valuable information of the nuclear equation of state, the nuclear symmetry energy, and microscopic nuclear interactions from intermediate-energy heavy-ion collision experiments. On the other hand, there do exist deviations on the predications and conclusions from different transport models. Efforts on the transport code evaluation project are devoted in order to understand the model dependence of transport simulations and well control the main ingredients, such as the initialization, the mean-field potential, the nucleon-nucleon collision, etc. A new era of accurately extracting nuclear interactions from transport model studies is foreseen.

   ↳ nucl-thnucl-exPPNP(2019)·79 citations
5. 05*

   Introduction to the transverse-momentum-weighted technique in the twist-3 collinear factorization approach

   Hongxi Xing🇨🇳 · Shinsuke Yoshida🇨🇳

   The twist-3 collinear factorization framework has drawn much attention in recent decades as a successful approach in describing the data for single spin asymmetries (SSAs). Many SSAs data have been experimentally accumulated in a variety of energies since the first measurement was done in late 70s and it is expected that the future experiments like Electron-Ion collider will provide us with more data. In order to perform a consistent and precise description of the data taken in different kinematic regimes, the scale evolution of the collinear twist-3 functions and the perturbative higher order hard part coefficients are mandatory. In this paper, we introduce the techniques for next-to-leading order (NLO) calculation of transverse-momentum-weighted SSAs, which can be served as a useful tool to derive the QCD evolution equation for twist-3 functions, and to verify the QCD collinear factorization for twist-3 observables at NLO, as well as to obtain the finite NLO hard part coefficients.

   ↳ hep-phnucl-exnucl-thAdv.High Energy Phys.(2019)·2 citations
6. 06*

   Comment on "Is a Trineutron Resonance Lower in Energy than a Tetraneutron Resonance?" [arXiv:1612.01502]

   A. Deltuva🇱🇹 · R. Lazauskas🇫🇷

   The quantum Monte Carlo study [S. Gandolfi, H.-W. Hammer, P. Klos, J. E. Lynn, and A. Schwenk, Phys. Rev. Lett. {\bf 118}, 232501 (2017), arXiv:1612.01502] of few-neutron resonant states provided results incompatible with rigorous few-body calculations. In this Comment we point out serious shortcomings in the work by Gandolfi et al, leading to misinterpretation of unbound few-body systems.

   ↳ nucl-thnucl-exPRL(2019)·21 citations
7. 07*

   Calibration and electric characterization of p-MNOS RADFETs at different dose rates and temperatures

   G. I. Zebrev · P. A. Zimin · E. V. Mrozovskaya · P. A. Chubunov · V. S. Anashin

   This paper describes the radiation response and I-V characteristics of the stacked p-MNOS based RADFETs measured at different dose rates and irradiation temperatures. It is shown that the enhanced charge trapping takes place at the interface of the thick gate dielectrics in the MNOS transistors at low dose rates (ELDRS). The sensitivity of the radiation effect to irradiation temperature has also experimentally revealed. We associate both effects with the temperature and dose rate dependence of the effective charge yield in the thick oxides described within the framework of the previously proposed model. We have also simulated the I-V characteristics of the transistors for different total doses and irradiation conditions. It has been found the used electric and radiation models consistently describe the observed dependencies of the RADFETs sensitivity on dose rates and irradiation temperatures for the devices with different thickness of insulators.

   ↳ physics.app-phnucl-exNucl.Instrum.Meth.A(2019)·2 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.