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Measurement of the Cross Section of Xi(0)(c) and Xi(+)(c) Baryons and of the Branching-Fraction Ratio BR (Xi(0)(c) impl Xi(-) e(+)V(c))/BR(Xi(0)(c) impl Xi(-)pi(+)) in pp Collisions at root s=13 TeV

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00552411" target="_blank" >RIV/68378271:_____/21:00552411 - isvavai.cz</a>

  • Alternative codes found

    RIV/61389005:_____/21:00552411

  • Result on the web

    <a href="https://doi.org/10.1103/PhysRevLett.127.272001" target="_blank" >https://doi.org/10.1103/PhysRevLett.127.272001</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1103/PhysRevLett.127.272001" target="_blank" >10.1103/PhysRevLett.127.272001</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Measurement of the Cross Section of Xi(0)(c) and Xi(+)(c) Baryons and of the Branching-Fraction Ratio BR (Xi(0)(c) impl Xi(-) e(+)V(c))/BR(Xi(0)(c) impl Xi(-)pi(+)) in pp Collisions at root s=13 TeV

  • Original language description

    The p_{T}-differential cross sections of prompt charm-strange baryons Ξ_{c}^{0} and Ξ_{c}^{+} were measured at midrapidity (|y|<0.5) in proton-proton (pp) collisions at a center-of-mass energy sqrt[s]=13 TeV with the ALICE detector at the LHC. The Ξ_{c}^{0} baryon was reconstructed via both the semileptonic decay (Ξ^{-}e^{+}ν_{e}) and the hadronic decay (Ξ^{-}π^{+}) channels. The Ξ_{c}^{+} baryon was reconstructed via the hadronic decay (Ξ^{-}π^{+}π^{+}) channel. The branching-fraction ratio BR(Ξ_{c}^{0}→Ξ^{-}e^{+}ν_{e})/BR(Ξ_{c}^{0}→Ξ^{-}π^{+})=1.38±0.14(stat)±0.22(syst) was measured with a total uncertainty reduced by a factor of about 3 with respect to the current world average reported by the Particle Data Group. The transverse momentum (p_{T}) dependence of the Ξ_{c}^{0}- and Ξ_{c}^{+}-baryon production relative to the D^{0} meson and to the Σ_{c}^{0,+,++}- and Λ_{c}^{+}-baryon production are reported. The baryon-to-meson ratio increases toward low p_{T} up to a value of approximately 0.3. The measurements are compared with various models that take different hadronization mechanisms into consideration. The results provide stringent constraints to these theoretical calculations and additional evidence that different processes are involved in charm hadronization in electron-positron (e^{+}e^{-}) and hadronic collisions.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10303 - Particles and field physics

Result continuities

  • Project

    <a href="/en/project/LTT17018" target="_blank" >LTT17018: Getting new knowledge of the microworld using the CERN infrastructure</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2021

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Physical Review Letters

  • ISSN

    0031-9007

  • e-ISSN

    1079-7114

  • Volume of the periodical

    127

  • Issue of the periodical within the volume

    DEC

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    13

  • Pages from-to

    272001

  • UT code for WoS article

    000754272800004

  • EID of the result in the Scopus database

    2-s2.0-85123443982