Dataset

GSI-2024-00214

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png First measurement of $\rm \Omega_c^0$ production in pp collisions at $\sqrt{s}=13$ TeV

ALICE Collaboration (Corresponding author)

2022

Please use a persistent id in citations: doi:10.17182/HEPDATA.136180

Abstract: The inclusive production of the charm-strange baryon $\rm \Omega_c^0$ is measured for the first time via its hadronic decay into $\rm \Omega^-\pi^+$ at midrapidity ($|{ y} <0.5|$ in proton-proton (pp) collisions at the centre-of-mass energy $\sqrt{s} =13$ TeV with the ALICE detector at the LHC. The transverse momentum ($P_T$) differential cross section multiplied by the branching ratio is presented in the interval $2 < P_T < 12$ GeV/$c$ . The $P_T$ dependence of the $\Omega^{0}_c$-baryon production relative to the prompt $D^0$-meson and to the prompt $\Xi^0_c$-baryon production is compared to various models that take different hadronisation mechanisms into consideration. In the measured interval, the ratio of the $P_T$-integrated cross sections of $\Omega^{0}_c$ and prompt $\Delta^+_c$ baryons multiplied by the $\Omega^+\pi^- $branching ratio is found to be larger by a factor of about 20 with a significance of about 4 $\sigma$ when compared to $e^+e^- $collisions.

Note: Journal Article GSI record: GSI-2024-00213

---

Contributing Institute(s):

1. ALICE (ALI)
2. Detektorlabor (DTL)
3. IT (CIT)
4. ExtreMe Matter Institute, EMMI (EXM)
5. Collaboration CERN: ALICE (ALICE@CERN)

Research Program(s):

1. 612 - Cosmic Matter in the Laboratory (POF4-612) (POF4-612)
2. HGS-HIRe - HGS-HIRe for FAIR (HGS-HIRe) (HGS-HIRe)
3. SUC-GSI-Heidelberg - Strategic university cooperation GSI-U Heidelberg (SUC-GSI-HE) (SUC-GSI-HE)
4. SUC-GSI-Frankfurt - Strategic university cooperation GSI-U Frankfurt/M (SUC-GSI-FR) (SUC-GSI-FR)
5. SUC-GSI-Darmstadt - Strategic university cooperation GSI-TU Darmstadt (SUC-GSI-DA) (SUC-GSI-DA)
6. STRONG-2020 - The strong interaction at the frontier of knowledge: fundamental research and applications (824093) (824093)

Experiment(s):

1. LHC: ALICE

Appears in the scientific report 2023

---

---

Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article Acharya, S. ; Adamova, D. ; Adler, A. ; et al
First measurement of Ω$_c^0$ production in pp collisions at $\sqrt{s}$ = 13 TeV
Physics letters / B 846, 137625 (2023) [10.1016/j.physletb.2022.137625]2023   Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

---