12,567 research outputs found
Multiplicity dependence for the production of strange hadrons and charged particles in proton-proton collisions
In this contribution, the production rates and the transverse momentum
distributions of strange hadrons are reported as a function of charged particle
multiplicity. In this analysis, the data collected in proton-proton collisions
at = 13 TeV with the ALICE detector at the LHC are used. It is found
that the production rate of , , , and
increases with multiplicity faster than that for charged particles. The higher
the strangeness content of the hadron, the more pronounced is the increase.
Moreover, the energy and multiplicity dependence of charged particle production
in pp collisions are presented and the results are compared to predictions from
Monte Carlo (MC) event generators. It turns out that the average multiplicity
density increases steeply with center-of-mass energy for high multiplicity
classes.Comment: Proceedings of XXV Cracow EPIPHANY Conference on Advances in Heavy
Ion Physics conference, 8-11 January 201
Spring 2009, Experienceing a Trans-Atlantic version of the U.S. election
Economics major Siddharth Prabhakar from Bedford, NH, is spending the year studying at the London School of Economics
From E_{2g} to other modes : Effects of pressure on electron-phonon interaction in MgB_2
We study the effects of pressure on the electron-phonon interaction in MgB_2
using density-functional-based methods. Our results show that the
superconductivity in MgB_2 vanishes by 100 GPa, and then reappears at higher
pressures. In particular, we find a superconducting transition temperature T_c
\~ 2 K for mu*=0.1 at a pressure of 137 GPa.Comment: 4 pages, 6 figures; one figure and discussion on phonon softening
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