Szczegóły publikacji
Opis bibliograficzny
Multiplicity dependence of $K^*(892)^\pm$ production in pp collisions at $\sqrt{s}$=13 TeV / I. J. Abualrob, [et al.], B. BALIŚ, [et al.], M. GORGOŃ, [et al.], A. HORZYK, [et al.], M. JABŁOŃSKI, [et al.], S. D. KORYCIAK, [et al.], T. M. LELEK, [et al.], E. MAJERZ, [et al.], R. W. MARCJAN, [et al.], D. K. PŁÓCIENNIK, [et al.], P. G. RUSSEK, [et al.], P. K. WIĄCEK, [et al.], M. WOJNAR, [et al.] // Physics Letters . B ; ISSN 0370-2693. — 2026 — vol. 874 art. no. 140253, s. 1–13. — Bibliogr. s. 11–13, Abstr. — Publikacja dostępna online od: 2026-02-09
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Dane bibliometryczne
| ID BaDAP | 166789 |
|---|---|
| Data dodania do BaDAP | 2026-03-31 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.physletb.2026.140253 |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physics Letters, B |
Abstract
The first results of K*(892) ± production at midrapidity (| y | ' 0.5) in pp collisions at s=13 TeV as a function of the event multiplicity are presented. The K*(892) ± has been reconstructed via its hadronic decay channel K*(892)±→π±+KS0 using the ALICE detector at the LHC. For each multiplicity class, the differential transverse momentum (p T) spectrum, the mean transverse momentum ⟨ p T⟩, the p T-integrated yield (d N /d y), and the ratio of the K*(892) ± to KS0 yields are reported. These are consistent with previous K*(892)0 resonance results with a higher level of precision. Comparisons with phenomenological models such as PYTHIA6, PYTHIA8, EPOS-LHC, and DIPSY are also discussed. For the first time, a significant K*(892) ± /KS0 suppression in pp collisions is observed at a 7 σ level passing from low to high multiplicity events. The ratios of the p T-differential yields of K*(892) ± and KS0 in high and low multiplicity events are also presented along with their double ratio. For p T ≲ 2 GeV/ c this double ratio persists below unity by more than 3 σ suggesting that the suppression affects mainly low p T resonances. The measured decreasing trend of the K*(892) ± /KS0 ratio with increasing multiplicity, which in heavy-ion collisions is typically attributed to the rescattering of decay particles of the short-lived resonances, is reproduced by the EPOS-LHC model without the use of hadronic afterburners.
