Multiplicity dependence of Ξc+ and Ξc0 production in pp collisions at √s=13 TeV
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F25%3A00645190" target="_blank" >RIV/61389005:_____/25:00645190 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/25:00645190
Result on the web
<a href="https://link.springer.com/article/10.1007/JHEP12(2025)038" target="_blank" >https://link.springer.com/article/10.1007/JHEP12(2025)038</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP12(2025)038" target="_blank" >10.1007/JHEP12(2025)038</a>
Alternative languages
Result language
angličtina
Original language name
Multiplicity dependence of Ξc+ and Ξc0 production in pp collisions at √s=13 TeV
Original language description
The first measurement at midrapidity (vertical bar y vertical bar < 0.5) of the production yield of the strange-charm baryons Xi(+)(c) and Xi(0)(c) as a function of transverse momentum (p(T)) in different charged-particle multiplicity classes in proton-proton collisions at root s = 13TeV with the ALICE experiment at the LHC is reported. The Xi(+)(c) baryon is reconstructed via the Xi(+)(c) -> Xi(-) pi(+)pi(+) decay channel in the range 4 < p(T) < 12 GeV/c, while the Xi(0)(c) baryon is reconstructed via both the Xi(0)(c) -> Xi(-) pi(+) and Xi(0)(c) -> Xi(-) e(+) nu(e) decay channels in the range 2 < p(T) < 12 GeV/c. The baryon-to-meson ( Xi(0,+)(c) /D-0) and the baryon-to-baryon (Xi(0,+)(c) /Lambda(+)(c)) production yield ratios show no significant dependence on multiplicity. In addition, the observed yield ratios are not described by theoretical predictions that model charm-quark fragmentation based on measurements at e(+)e(-) and e(-)p colliders, indicating differences in the charm-baryon production mechanism in pp collisions. A comparison with different event generators and tunings, including different modelling of the hadronisation process, is also discussed. Moreover, the branching-fraction ratio of BR( Xi(0)(c) -> Xi(-) e(+) nu(e))/BR( Xi(0)(c) -> Xi(-) pi(+)) is measured as 0.825 +/- 0.094 (stat.) +/- 0.081 (syst.). This value supersedes the previous ALICE measurement, improving the statistical precision by a factor of 1.6.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10304 - Nuclear physics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of High Energy Physics
ISSN
1029-8479
e-ISSN
1029-8479
Volume of the periodical
2025
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
32
Pages from-to
38
UT code for WoS article
001641203800001
EID of the result in the Scopus database
2-s2.0-105026572878