| Article | |
| Report number | arXiv:2110.03977 |
| Title | Extension of Glauber-like model for Proton-Proton collisions using anisotropic and inhomogeneous density profile |
| Author(s) | Deb, Suman (Indian Inst. Tech., Indore) ; Sarwar, Golam (Indian Inst. Tech., Indore) ; Thakur, Dhananjaya (Indian Inst. Tech., Indore) ; S., Pavish (Bergische U., Wuppertal (main)) ; Sahoo, Raghunath (Indian Inst. Tech., Indore ; CERN) ; Alam, Jan-e (Calcutta, VECC) |
| Publication | 2021-11-17 |
| Imprint | 2021-10-08 |
| Number of pages | 5 |
| Note | Presented in LHCP-2021. To appear as PoS. Slightly modified version with corrected references |
| In: | PoS LHCP2021 (2021) pp.225 |
| In: | 9th Annual Large Hadron Collider Physics (LHCP 2021), Online, GB, 7 - 12 Jun 2021, pp.225 |
| DOI | 10.22323/1.397.0225 |
| Subject category | nucl-th ; Nuclear Physics - Theory ; nucl-ex ; Nuclear Physics - Experiment ; hep-ex ; Particle Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology |
| Abstract | Results from proton-proton ($pp$) collisions have routinely been used as a baseline to analyze and understand the production of QCD matter expected to be produced in nuclear collisions. But recent studies of small systems formed in $pp$ collisions at the LHC energies hint at the possibility of producing medium with collective behavior. Therefore, results from $pp$ collisions required more careful investigation to understand whether QCD matter is produced in high multiplicity $pp$ collisions. With this motivation, the Glauber model traditionally used to study the heavy-ion collision dynamics at high energy is applied here to understand the dynamics of $pp$ collisions. We have used anisotropic and inhomogeneous quark/gluon-based proton density profile, a realistic picture obtained from deep inelastic scattering results and this model explains the charged particle multiplicity distribution of $pp$ collisions at LHC energies very well. Collision geometric properties like impact parameter and mean number of binary collisions ($\langle N_{coll} \rangle$), mean number of participants ($\langle N_{part} \rangle$) at different multiplicities are determined for $pp$ collisions. We further used these collision geometric properties to estimate average charged-particle pseudorapidity density ($\langle dN_{ch}/d\eta \rangle$) and found it to be comparable with the experimental results. Knowing $\langle N_{coll} \rangle$, we have obtained nuclear modification-like factor ($R_{pp}$) in $pp$ collisions which has not been done before to the best of our knowledge. |
| Copyright/License | preprint: © owned by the author(s) (License: CC BY-NC-SA 4.0) |
Corresponding record in: Inspire
Element opprettet 2021-10-26, sist endret 2023-06-28
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