Wed·Jul 3, 2019Wednesday·July 3, 2019

1. 01*

   Event-by-Event Multiplicity Correlations in ${}^{252}$Cf(sf)

   Stefano Marin🇺🇸 · Vladimir A. Protopopescu🇺🇸 · Ramona Vogt🇺🇸 · Matthew J. Marcath · M. Stephan Okar🇺🇸 · Michael Y. Hua · Patrick Talou🇺🇸 · Patricia F. Schuster · Shaun D. Clarke🇺🇸 · Sara A. Pozzi🇮🇹

   Excited nuclear fragments are emitted during nuclear fission. The de-excitation of these fission fragments takes place as sequential emission of neutrons followed by photons. A correlation between neutron and photon multiplicities accompanying fission is thus expected. Fission event generators based on established statistical nuclear physics models predict a negative event-by-event correlation in neutron-photon multiplicity. A survey of published experimental results of an event-by-event covariance between the neutron and photon multiplicities emitted following the spontaneous fission of ${}^{252}$Cf is presented. Analytic unfolding expressions are developed in this work to determine the bias introduced by background sources, particle misclassification, pulse pileup, and inelastic photon production. The published experimental data are re-analyzed using these unfolding techniques and are found to be in qualitative agreement with the predictions of model-based calculations. In particular, we have concluded that there exists a significant event-by-event neutron-photon emission competition following the spontaneous fission of ${}^{252}$Cf.

   nucl-exnucl-thNucl.Instrum.Meth.A(2020)·8 citations
2. 02*

   Differential and total cross sections of high energy proton-proton scattering in holographic QCD

   Akira Watanabe🇨🇳

   The analysis on the high energy proton-proton scattering is presented, focusing on the Regge regime and considering the Pomeron exchange to describe the involved nonperturbative dynamics in the framework of holographic QCD. We combine the Reggeized spin-2 particle propagator and the proton gravitational form factor, which is obtained from the bottom-up AdS/QCD model, and calculate the differential and total cross sections. We explicitly demonstrate the comparison between our calculations and the currently available experimental data including the recent ones measured at $\sqrt{s}=13$ TeV by the TOTEM collaboration at the LHC. It is shown that our results are consistent with the data, which implies that the present framework works in the considered TeV scale.

   ↳ hep-phhep-exnucl-exnucl-thPoS(2019)·3 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.