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Measurement of inclusive charged-particle jet production in Au plus Au collisions at root S-NN=200 GeV

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F20%3A00536569" target="_blank" >RIV/61389005:_____/20:00536569 - isvavai.cz</a>

  • Result on the web

    <a href="https://doi.org/10.1103/PhysRevC.102.054913" target="_blank" >https://doi.org/10.1103/PhysRevC.102.054913</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1103/PhysRevC.102.054913" target="_blank" >10.1103/PhysRevC.102.054913</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Measurement of inclusive charged-particle jet production in Au plus Au collisions at root S-NN=200 GeV

  • Original language description

    The STAR Collaboration at the Relativistic Heavy Ion Collider reports the first measurement of inclusive jet production in peripheral and central Au+Au collisions at root S-NN = 200 GeV. Jets are reconstructed with the anti-k(T) algorithm using charged tracks with pseudorapidity vertical bar n vertical bar < 1.0 and transverse momentum 0.2 < p(T,jet)(ch) < 30 GeV/c, with jet resolution parameter R = 0.2, 0.3, and 0.4. The large background yield uncorrelated with the jet signal is observed to be dominated by statistical phase space, consistent with a previous coincidence measurement. This background is suppressed by requiring a high-transverse-momentum (high-p(T)) leading hadron in accepted jet candidates. The bias imposed by this requirement is assessed, and the p(T) region in which the bias is small is identified. Inclusive charged-particle jet distributions are reported in peripheral and central Au+Au collisions for 5 < p(T,jet)(ch) < 25 GeV/c and 5 < p(T,jet)(ch) < 30 GeV/c, respectively. The charged-particle jet inclusive yield is suppressed for central Au+Au collisions, compared to both the peripheral Au+Au yield from this measurement and to the pp yield calculated using the PYTHIA event generator. The magnitude of the suppression is consistent with that of inclusive hadron production at high p(T) and that of semi-inclusive recoil jet yield when expressed in terms of energy loss due to medium-induced energy transport. Comparison of inclusive charged-particle jet yields for different values of R exhibits no significant evidence for medium-induced broadening of the transverse jet profile for R <0.4 in central Au+Au collisions. The measured distributions are consistent with theoretical model calculations that incorporate jet quenching.

  • 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

    10304 - Nuclear physics

Result continuities

  • Project

    <a href="/en/project/LTT18002" target="_blank" >LTT18002: Study of new properties of nuclear matter in the international experiment STAR</a><br>

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2020

  • 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 C

  • ISSN

    2469-9985

  • e-ISSN

  • Volume of the periodical

    102

  • Issue of the periodical within the volume

    5

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    25

  • Pages from-to

    054913

  • UT code for WoS article

    000595152800011

  • EID of the result in the Scopus database

    2-s2.0-85097626551