Tue·Aug 4, 2009Tuesday·August 4, 2009

1. 01*

   System Size and Collision Energy Dependence of $v_2$ for Identified Charged Hadrons at RHIC-PHENIX

   Maya Shimomura (for the PHENIX Collaboration)🇯🇵

   The transverse momentum ($p_{\mathrm{T}}$) and centrality dependence of the azimuthal anisotropy ($v_2$) are measured for charged hadrons in different energies and collision species by the PHENIX experiment at RHIC. We find that $v_2$ divided by the participant eccentricity of the initial geometry proportionally increases with the number of participants to the 1/3 power except at small $N_{\mathrm{part}}$ in Cu+Cu at $\sqrt{s_{\mathrm{NN}}}$ = 62.4 GeV. Taking the eccentricity and quark number scaling into account, there is a universal scaling for $v_2$ with different energies and collision sizes. The results indicate that $v_2$ is determined by more than just the geometrical eccentricity. It also depends on the size of collision. We also report that both the behaviors of $v_2$ and $p_{\mathrm{T}}$ distributions can be understood from the thermal nature of produced particles based on hydro-dynamical behavior.

   nucl-exNPA(2009)·4 citations
2. 02*

   Short-Distance Structure of Nuclei

   D. W. Higinbotham🇺🇸 · E. Piasetzky🇮🇱 · S. A. Wood🇺🇸

   One of Jefferson Lab's original missions was to further our understanding of the short-distance structure of nuclei. In particular, to understand what happens when two or more nucleons within a nucleus have strongly overlapping wave-functions; a phenomena commonly referred to as short-range correlations. Herein, we review the results of the (e,e'), (e,e'p) and (e,e'pN) reactions that have been used at Jefferson Lab to probe this short-distance structure as well as provide an outlook for future experiments.

   nucl-exJ.Phys.Conf.Ser.(2011)·4 citations
3. 03*

   A novel approach to background reduction in double beta decay experiments

   T. Tabarelli de Fatis🇮🇹

   Active background reduction in high resolution calorimeters is a promising approach to achieve ultimate sensitivity in neutrinoless double beta decay experiments. We propose Cerenkov emission from beta rays in bolometric crystals as a viable alternative to scintillation. This novel approach could broaden the range of materials of interest for calorimetric searches of the double beta decay. We discuss the optical properties of TeO${}_2$ crystals, as a show case.

   nucl-ex4 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.