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| Title: | Search for a common baryon source in high-multiplicity pp collisions at the LHC |
| Authors: | Deb, Soumen Rath, Rutuparna Roy, Ankhi Sahoo, Raghunath |
| Issue Date: | 2020 |
| Publisher: | Elsevier B.V. |
| Citation: | Acharya, S., Adamová, D., Adler, A., Adolfsson, J., Aggarwal, M. M., Aglieri Rinella, G., . . . Zurlo, N. (2020). Search for a common baryon source in high-multiplicity pp collisions at the LHC. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 811 doi:10.1016/j.physletb.2020.135849 |
| Abstract: | We report on the measurement of the size of the particle-emitting source from two-baryon correlations with ALICE in high-multiplicity pp collisions at s=13 TeV. The source radius is studied with low relative momentum p–p, p‾–p‾, p–Λ, and p‾–Λ‾ pairs as a function of the pair transverse mass mT considering for the first time in a quantitative way the effect of strong resonance decays. After correcting for this effect, the radii extracted for pairs of different particle species agree. This indicates that protons, antiprotons, Λ s, and Λ‾ s originate from the same source. Within the measured mT range (1.1–2.2) GeV/c2the invariant radius of this common source varies between 1.3 and 0.85 fm. These results provide a precise reference for studies of the strong hadron–hadron interactions and for the investigation of collective properties in small colliding systems. © 2020 CERN for the benefit of the ALICE Collaboration |
| URI: | https://doi.org/10.1016/j.physletb.2020.135849 https://dspace.iiti.ac.in/handle/123456789/7940 |
| ISSN: | 0370-2693 |
| Type of Material: | Journal Article |
| Appears in Collections: | Department of Physics |
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