Fri·Sep 11, 2015Friday·September 11, 2015

1. 01*

   Charged particle decay of hot and rotating ${}^{88}$Mo nuclei in fusion-evaporation reactions

   S. Valdré🇮🇹 · S. Piantelli🇮🇹 · G. Casini🇮🇹 · S. Barlini🇮🇹 · S. Carboni🇮🇹 · M. Ciemała🇵🇱 · M. Kmiecik🇵🇱 · A. Maj🇵🇱 · K. Mazurek🇵🇱 · M. Cinausero🇮🇹 · F. Gramegna🇮🇹 · V.L. Kravchuk🇷🇺 and 39 other authors

   A study of fusion-evaporation and (partly) fusion-fission channels for the ${}^{88}$Mo compound nucleus, produced at different excitation energies in the reaction ${}^{48}$Ti + ${}^{40}$Ca at 300, 450 and 600 MeV beam energies, is presented. Fusion-evaporation and fusion-fission cross sections have been extracted and compared with the existing systematics. Experimental data concerning light charged particles have been compared with the prediction of the statistical model in its implementation in the Gemini++ code, well suited even for high spin systems, in order to tune the main model parameters in a mass region not abundantly covered by exclusive experimental data. Multiplicities for light charged particles emitted in fusion evaporation events are also presented. Some discrepancies with respect to the prediction of the statistical model have been found for forward emitted $\alpha$-particles; they may be due both to pre-equilibrium emission and to reaction channels (such as Deep Inelastic Collisions, QuasiFission/QuasiFusion) different from the compound nucleus formation.

   nucl-exPRC(2016)·10 citations
2. 02*

   Contemporary continuum QCD approaches to excited hadrons

   Bruno El-Bennich🇧🇷 · Eduardo Rojas🇨🇴

   Amongst the bound states produced by the strong interaction, radially excited meson and nucleon states offer an important phenomenological window into the long-range behavior of the coupling constant in Quantum Chromodynamics. We here report on some technical details related to the computation of the bound state's eigenvalue spectrum in the framework of Bethe-Salpeter and Faddeev equations.

   ↳ nucl-thhep-lathep-phnucl-exEPJ Web Conf.(2016)·4 citations
3. 03*

   Three Lectures on Hadron Physics

   Craig D. Roberts🇺🇸

   These lectures explain that comparisons between experiment and theory can expose the impact of running couplings and masses on hadron observables and thereby aid materially in charting the momentum dependence of the interaction that underlies strong-interaction dynamics. The series begins with a primer on continuum QCD, which introduces some of the basic ideas necessary in order to understand the use of Schwinger functions as a nonperturbative tool in hadron physics. It continues with a discussion of confinement and dynamical symmetry breaking (DCSB) in the Standard Model, and the impact of these phenomena on our understanding of condensates, the parton structure of hadrons, and the pion electromagnetic form factor. The final lecture treats the problem of grand unification; namely, the contemporary use of Schwinger functions as a symmetry-preserving tool for the unified explanation and prediction of the properties of both mesons and baryons. It reveals that DCSB drives the formation of diquark clusters in baryons and sketches a picture of baryons as bound-states with Borromean character. Planned experiments are capable of validating the perspectives outlined in these lectures.

   ↳ nucl-thhep-lathep-phnucl-exJ.Phys.Conf.Ser.(2016)·71 citations
4. 04*

   Jet Quenching from QCD Evolution

   Yang-Ting Chien🇺🇸 · Alexander Emerman🇺🇸 · Zhong-Bo Kang🇺🇸 · Grigory Ovanesyan🇺🇸 · Ivan Vitev🇺🇸

   Recent advances in soft-collinear effective theory with Glauber gluons have led to the development of a new method that gives a unified description of inclusive hadron production in reactions with nucleons and heavy nuclei. We show how this approach, based on the generalization of the DGLAP evolution equations to include final-state medium-induced parton showers, can be combined with initial-state effects for applications to jet quenching phenomenology. We demonstrate that the traditional parton energy loss calculations can be regarded as a special soft-gluon emission limit of the general QCD evolution framework. We present phenomenological comparison of the SCET${}_{\mathrm{G}}$-based results on the suppression of inclusive charged hadron and neutral pion production in $\sqrt{s_{NN}}=2.76$ TeV lead-lead collisions at the Large Hadron Collider to experimental data. We also show theoretical predictions for the upcoming $\sqrt{s_{NN}}\simeq 5.1$ TeV Pb+Pb run at the LHC.

   ↳ hep-phnucl-exnucl-thPRD(2016)·142 citations
5. 05*

   Using Back-Scattering to Enhance Efficiency in Neutron Detectors

   Thomas Kittelmann🇸🇪 · Esben Klinkby🇩🇰 · Xiao Xiao Cai · Kalliopi Kanaki🇩🇰 · Carsten P Cooper-Jensen · Richard Hall-Wilton🇸🇪

   The principle of using strongly scattering materials to recover efficiency in neutron detectors, via back-scattering of unconverted thermal neutrons, is discussed in general. Feasibility of the method is illustrated through Geant4-based simulations of a specific setup involving a moderator-like material placed behind a single layered boron-10 thin film gaseous detector.

   ↳ physics.ins-detnucl-exphysics.comp-phIEEE Trans.Nucl.Sci.(2017)·4 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.