Name: First measurement of $\rm \Omega_c^0$ production in pp collisions at $\sqrt{s}=13$ TeV
Creator: ALICE Collaboration
Published: 2022

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Acharya, Shreyasi et al.
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Accessed 647 times Last updated on 2022-12-20 13:04

First measurement of

Ω_{c}^{0}

production in pp collisions at

\sqrt{s} = 13

TeV

The ALICE collaboration

Acharya, Shreyasi , Adamova, Dagmar , Adler, Alexander , Aglieri Rinella, Gianluca , Agnello, Michelangelo , Agrawal, Neelima , Ahammed, Zubayer , Ahmad, Shakeel , Ahn, Sang Un , Ahuja, Ishaan

Phys.Lett.B 846 (2023) 137625, 2023.

https://doi.org/10.17182/hepdata.136180.v1

Abstract (data abstract)

The inclusive production of the charm-strange baryon

Ω_{c}^{0}

is measured for the first time via its hadronic decay into

Ω^{-} π^{+}

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 G e V / c

. The

p_{T}

dependence of the

Ω_{c}^{0}

-baryon production relative to the prompt

D^{0}

-meson and to the prompt

Ξ_{c}^{0}

-baryon production is compared to various models that take different hadronisation mechanisms into consideration. In the measured

p_{T}

interval, the ratio of the

p_{T}

-integrated cross sections of

Ω_{c}^{0}

and prompt

Λ_{c}^{+}

baryons multiplied by the

Ω^{-} π^{+}

branching ratio is found to be larger by a factor of about 20 with a significance of about 4

σ

when compared to

e^{+} e^{-}

collisions.

Table 1

Data from Figure 2

10.17182/hepdata.136180.v1/t1

The $p_{T}$ -differential production cross section of inclusive $Ω_{c}^{0}$ baryons multiplied by the branching ratio into $Ω^{-} π^{+}$ for...
Table 2

Data from Figure 3 left, top pannel

10.17182/hepdata.136180.v1/t2

$B R (Ω_{c}^{0} \to Ω^{-} π^{+}) \times σ (Ω_{c}^{0}) / σ (D^{0})$ as a function of $p_{T}$ in pp collisions at $\sqrt{s} = 13$ TeV...
Table 3

Data from Figure 3 right, top pannel

10.17182/hepdata.136180.v1/t3

$B R (Ω_{c}^{0} \to Ω^{-} π^{+}) \times σ (Ω_{c}^{0}) / σ (Ξ_{c}^{0})$ as a function of $p_{T}$ in pp collisions at $\sqrt{s} = 13$ TeV...

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