Onset of radial flow in collisions
Abstract
It has been debated for decades whether hadrons emerging from p+p collisions exhibit collective expansion. The signal of the collective motion in p+p collisions is not as clear as in heavy-ion collisions because of the low multiplicity and large fluctuation in p+p collisions. Tsallis Blast-Wave (TBW) model is a thermodynamic approach, introduced to handle the overwhelming correlation and fluctuation in the hadronic processes. We have systematically studied the identified particle spectra in p+p collisions from RHIC to LHC using TBW and found no appreciable radial flow in p+p collisions below √s = 900 GeV. At LHC higher energy of 7 TeV in p+p collisions, the radial flow velocity achieves an average of (β) = 0.320 ± 0.005. This flow velocity is comparable to that in peripheral (40-60%) Au+Au collisions at RHIC. In addition, breaking of the identified particle spectra mT scaling was also observed at LHC from a model independent test.
- Authors:
-
- Univ. of Science and Technology of China, Hefei (China)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1188210
- Alternate Identifier(s):
- OSTI ID: 1181629
- Report Number(s):
- BNL-107636-2015-JA
Journal ID: ISSN 0556-2813; PRVCAN
- Grant/Contract Number:
- SC00112704; AC02-98CH10886
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. C. Nuclear Physics
- Additional Journal Information:
- Journal Volume: 91; Journal Issue: 2; Journal ID: ISSN 0556-2813
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; relativistic heavy ion collider
Citation Formats
Jiang, Kun, Zhu, Yinying, Liu, Weitao, Chen, Hongfang, Li, Cheng, Ruan, Lijuan, Tang, Zebo, and Xu, Zhangbu. Onset of radial flow in p+p collisions. United States: N. p., 2015.
Web. doi:10.1103/PhysRevC.91.024910.
Jiang, Kun, Zhu, Yinying, Liu, Weitao, Chen, Hongfang, Li, Cheng, Ruan, Lijuan, Tang, Zebo, & Xu, Zhangbu. Onset of radial flow in p+p collisions. United States. https://doi.org/10.1103/PhysRevC.91.024910
Jiang, Kun, Zhu, Yinying, Liu, Weitao, Chen, Hongfang, Li, Cheng, Ruan, Lijuan, Tang, Zebo, and Xu, Zhangbu. Mon .
"Onset of radial flow in p+p collisions". United States. https://doi.org/10.1103/PhysRevC.91.024910. https://www.osti.gov/servlets/purl/1188210.
@article{osti_1188210,
title = {Onset of radial flow in p+p collisions},
author = {Jiang, Kun and Zhu, Yinying and Liu, Weitao and Chen, Hongfang and Li, Cheng and Ruan, Lijuan and Tang, Zebo and Xu, Zhangbu},
abstractNote = {It has been debated for decades whether hadrons emerging from p+p collisions exhibit collective expansion. The signal of the collective motion in p+p collisions is not as clear as in heavy-ion collisions because of the low multiplicity and large fluctuation in p+p collisions. Tsallis Blast-Wave (TBW) model is a thermodynamic approach, introduced to handle the overwhelming correlation and fluctuation in the hadronic processes. We have systematically studied the identified particle spectra in p+p collisions from RHIC to LHC using TBW and found no appreciable radial flow in p+p collisions below √s = 900 GeV. At LHC higher energy of 7 TeV in p+p collisions, the radial flow velocity achieves an average of (β) = 0.320 ± 0.005. This flow velocity is comparable to that in peripheral (40-60%) Au+Au collisions at RHIC. In addition, breaking of the identified particle spectra mT scaling was also observed at LHC from a model independent test.},
doi = {10.1103/PhysRevC.91.024910},
journal = {Physical Review. C. Nuclear Physics},
number = 2,
volume = 91,
place = {United States},
year = {Mon Feb 23 00:00:00 EST 2015},
month = {Mon Feb 23 00:00:00 EST 2015}
}
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