Knowledge Management System Of Shanghai Institute of Applied Physics, CAS
| 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 Name | 12th International Conference on Strangeness in Quark Matter |
| Source Publication | JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS |
| Conference Date | OCT 05-10, 2008 |
| Conference Place | Beijing, PEOPLES R CHINA |
| Abstract | In 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. |
| ISSN | 0954-3899 |
| Indexed By | SCI |
| Funding Project | 应物所课题组 |
| Language | 英语 |
| Document Type | 会议论文 |
| Identifier | http://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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