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Measurement of non-photonic electrons in p plus p collisions at root s(NN)=200 GeV with reduced detector material in STAR
Jin, F(靳富)
2009
Conference Name12th International Conference on Strangeness in Quark Matter
Source PublicationJOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
Conference DateOCT 05-10, 2008
Conference PlaceBeijing, PEOPLES R CHINA
AbstractIn this paper, we present our analysis of mid-rapidity non-photonic electron (NPE) production at p(T) > 0.2 GeV/c in p+p collisions at root s(NN) = 200 GeV. The data set is similar to 78 M TOF-triggered events taken from RHIC year 2008 runs. Through the measurement of the e/pi ratio, we find that the photonic background electrons from gamma conversions are reduced by about a factor of 10 compared with those in STAR previous runs due to the absence of inner tracking detectors and the supporting materials. The dramatic increase of the signal-to-background ratio will allow us to improve the precision on extracting the charm cross section via its semi-leptonic decays to electrons.
ISSN0954-3899
Indexed BySCI
Funding Project应物所课题组
Language英语
Document Type会议论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/8861
Collection中科院上海应用物理研究所2004-2010年
Recommended Citation
GB/T 7714
Jin, F. Measurement of non-photonic electrons in p plus p collisions at root s(NN)=200 GeV with reduced detector material in STAR[C],2009.
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