First results on charged $K*(892)^{\pm}$ resonance production in pp collisions with ALICE at the LHC

5 Jun 2018, 16:00
1h 30m
Library, Centro San Domenico

Library, Centro San Domenico

LHC experiments Posters session

Speaker

Kunal Garg (Universita e INFN, Catania (IT))

Description

The study of strange hadronic resonances in pp collisions contributes to the study of strangeness production in small systems. Measurements in pp collisions constitute a reference for the study in larger colliding systems and provide constraints for tuning QCD-inspired event generators. Since the lifetimes of short-lived resonances such as $K^{*}(892)^{\pm}$ ($\tau \sim 4$ fm/$c$) are comparable with the lifetime of the fireball produced in heavy-ion collisions, regeneration and rescattering effects can modify the measured yield, especially at low transverse momentum. \

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The first results for the $K^{*}(892)^{\pm}$ resonance obtained in inelastic pp collisions at $\sqrt{\text{s}}=$ 5.02, 8, and 13 TeV will be shown. The $K^{*}(892)^{\pm}$ has been measured at mid-rapidity via its hadronic decay channel $K^{*}(892)^{\pm}\rightarrow K^{0}_{\rm{S}}+\pi^{\pm}$, with the ALICE detector. In particular, the transverse momentum ($p_{\mathrm{T}}$) spectrum, integrated yields, $\langle p_{\mathrm{T}}\rangle$ and ratio to stable hadrons will be presented. The $K^{*}(892)^{\pm}$ results are compared with $K^{*0}$ measurements and with commonly-used Monte Carlo models. Measurements at 13 TeV are in addition a baseline for comparison with pp measurements at other LHC energies.

Primary author

Kunal Garg (Universita e INFN, Catania (IT))

Co-author

Presentation Materials