Measurement of the energy density as a function of pseudorapidity in proton-proton collisions at √{s} =13 {TeV}
Abstract
A measurement of the energy density in proton-proton collisions at a centre-of-mass energy of √{s} =13 {TeV} is presented. The data have been recorded with the CMS experiment at the LHC during low luminosity operations in 2015. The energy density is studied as a function of pseudorapidity in the ranges - 6.6<η <- 5.2 and 3.15<|η |<5.20. The results are compared with the predictions of several models. All the models considered suggest a different shape of the pseudorapidity dependence compared to that observed in the data. A comparison with LHC proton-proton collision data at √{s} =0.9 and 7 {TeV} confirms the compatibility of the data with the hypothesis of limiting fragmentation.
- Publication:
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European Physical Journal C
- Pub Date:
- May 2019
- DOI:
- 10.1140/epjc/s10052-019-6861-x
- Bibcode:
- 2019EPJC...79..391S