E3S Web Conf.
Volume 218, 20202020 International Symposium on Energy, Environmental Science and Engineering (ISEESE 2020)
|Number of page(s)||4|
|Section||Environmental Chemistry and Environmental Pollution Analysis and Control|
|Published online||11 December 2020|
Two-pion Bose-Einstein Correlations data analysis for the CMS Pb-Pb nucleon collisions
School of Physics, University of Science and Technology of China, Hefei, Anhui, 230026, China
2 Dalian Yuming Senior High School, Dalian 116023, China
3 Wuhan Britain-China School, Wuhan 430022, China
4 Tianjin Farragut Academy, Tianjin 300042, China
* Corresponding author’s e-mail: email@example.com
From the data collected in the Compact Muon Solenoid (CMS) Pb-Pb nucleon collisions experiment, the two-pion Bose-Einstein correlation functions for different combination of same charges and different charges are plotted. The influence of repulsion and attraction through Coulomb interaction between charged pions is reduced after applying the standard Gamow-factor Coulomb correction on Gaussian function C(Qinv). According to the Yano-koonin-Podgoretski parametrization, the five-dimensional components of the invariant momentum difference between two pions are calculated. One of the five components, the momentum difference in the transverse plane QT, can be further divided into Qside and Qout. Q0, Qlong, Qside and Qout were then separately plotted and fitted with the Gaussian function. The sizes of pion source or the effective interferometric source can be extracted from the fitting finally.
© The Authors, published by EDP Sciences, 2020
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