# Quark Matter 2012

12-18 August 2012
US/Eastern timezone

## Antiparticle to particle ratios and identified hadron spectra for p+p collisions in sqrt(s)=62.4 GeV at STAR

16 Aug 2012, 16:00
2h

Poster Global and collective dynamics

### Speaker

Shikshit Gupta (University of Jammu)

### Description

Information about the evolution of the system formed during the high energy p + p collisions can be obtained by investigating the charged particle ratios. The particle ratios serve as an important indicator of the collision dynamics [1]. These can be used to probe the process of hadronization in high energy collisions. In this poster, we will present measurements of mid-rapidity antiparticle to particle ratios in p + p collisions at sqrt(s)= 62.4 GeV from the STAR experiment. The charged pion and kaon particle ratios as well as the antiproton to proton ratios will be measured as a function of transverse momentum using the TPC detector. Charged hadrons will be identiﬁed by using speciﬁc ionization energy loss at the low momentum region (0.15 to 0.75 GeV) [2-3]. We will compare our results with the previous measurements made with same collision system at ISR energies [4]. Antiproton to proton ratio will be obtained after applying background corrections to the proton yields. References [1] H. Satz , Rep.Prog.Phys. 63 (2000) 151. [2] B. I. Abelev et al., [STAR Collaboration], Phys.Rev.C 79 (2009) 34909. [3] H. Bichsel, Nucl.Instrum.Meth.A vol. 562, (2006) 154-197. [4] B. Alper et al., Nucl.Phys.B 100 (1975) 237-290.

### Primary author

Shikshit Gupta (University of Jammu)

### Presentation Materials

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