Measurement of Prompt <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>D</mml:mi><mml:mn>0</mml:mn></mml:msup></mml:math>, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi mathvariant="normal">Λ</mml:mi><mml:mi>c</mml:mi><mml:mo>+</mml:mo></mml:msubsup></mml:math>, and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi mathvariant="normal">Σ</mml:mi><mml:mi>c</mml:mi><mml:mrow><mml:mn>0</mml:mn><mml:mo>,</mml:mo><mml:mo>+</mml:mo><mml:mo>+</mml:mo></mml:mrow></mml:msubsup><mml:mo stretchy="false">(</mml:mo><mml:mn>2455</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math> Production in Proton-Proton Collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>13</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>TeV</mml:mi></mml:math>
S. AcharyaVariable Energy Cyclotron Centre, Homi Bhabha National Institute, Kolkata, IndiaD. AdamováNuclear Physics Institute of the Czech Academy of Sciences, Řež u Prahy, Czech RepublicA. AdlerJohann-Wolfgang-Goethe Universität Frankfurt Institut für Informatik, Fachbereich Informatik und Mathematik, Frankfurt, GermanyJ. AdolfssonLund University Department of Physics, Division of Particle Physics, Lund, SwedenG. Aglieri RinellaEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandM. AgnelloDipartimento DISAT del Politecnico and Sezione INFN, Turin, ItalyN. AgrawalINFN, Sezione di Bologna, Bologna, ItalyZ. AhammedVariable Energy Cyclotron Centre, Homi Bhabha National Institute, Kolkata, IndiaS. AhmadDepartment of Physics, Aligarh Muslim University, Aligarh, IndiaS. U. AhnKorea Institute of Science and Technology Information, Daejeon, Republic of KoreaI. AhujaFaculty of Science, P.J. Šafárik University, Košice, SlovakiaZaenal AkbarIndonesian Institute of Sciences, Jakarta, IndonesiaA. AkindinovNRC Kurchatov Institute-ITEP, Moscow, RussiaM. Al-TuranyResearch Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, GermanyS. N. AlamFudan University, Shanghai, ChinaD. AleksandrovNational Research Centre Kurchatov Institute, Moscow, RussiaB. AlessandroINFN, Sezione di Torino, Turin, ItalyH. M. AlfandaCentral China Normal University, Wuhan, ChinaR. Alfaro MolinaInstituto de Física, Universidad Nacional Autónoma de México, Mexico City, MexicoB. AliDepartment of Physics, Aligarh Muslim University, Aligarh, IndiaY. AliCOMSATS University Islamabad, Islamabad, PakistanA. AliciDipartimento di Fisica e Astronomia dell'Università and Sezione INFN, Bologna, ItalyN. AlizadehvandchaliUniversity of Houston, Houston, Texas, USAA. AlkinEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandJ. AlmeDepartment of Physics and Technology, University of Bergen, Bergen, NorwayT. AltInstitut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, GermanyL. AltenkamperDepartment of Physics and Technology, University of Bergen, Bergen, NorwayI. AltsybeevSt. Petersburg State University, St. Petersburg, RussiaM. N. AnaamCentral China Normal University, Wuhan, ChinaC. AndreiHoria Hulubei National Institute of Physics and Nuclear Engineering, Bucharest, RomaniaD. AndreouNikhef, National institute for subatomic physics, Amsterdam, NetherlandsA. AndronicWestfälische Wilhelms-Universität Münster, Institut für Kernphysik, Münster, GermanyM. AngelettiEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandV. AnguelovPhysikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, GermanyF. AntinoriINFN, Sezione di Padova, Padova, ItalyP. AntonioliINFN, Sezione di Bologna, Bologna, ItalyC. AnujDepartment of Physics, Aligarh Muslim University, Aligarh, IndiaN. ApadulaLawrence Berkeley National Laboratory, Berkeley, California, USAL. AphecetcheSUBATECH, IMT Atlantique, Université de Nantes, CNRS-IN2P3, Nantes, FranceH. AppelshäuserInstitut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, GermanyS. ArcelliDipartimento di Fisica e Astronomia dell'Università and Sezione INFN, Bologna, ItalyR. ArnaldiINFN, Sezione di Torino, Turin, ItalyI. C. ArseneDepartment of Physics, University of Oslo, Oslo, NorwayM. ArslandokPhysikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, GermanyA. AugustinusEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandR. AverbeckResearch Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, GermanyS. AzizLaboratoire de Physique des 2 Infinis, Irène Joliot-Curie, Orsay, FranceM. D. AzmiDepartment of Physics, Aligarh Muslim University, Aligarh, IndiaA. BadalàINFN, Sezione di Catania, Catania, ItalyY. W. BaekGangneung-Wonju National University, Gangneung, Republic of KoreaX. BaiResearch Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, GermanyR. BailhacheInstitut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, GermanyY. BailungIndian Institute of Technology Indore, Indore, IndiaR. BalaPhysics Department, University of Jammu, Jammu, IndiaA. BalbinoDipartimento DISAT del Politecnico and Sezione INFN, Turin, ItalyA. BaldisseriUniversité Paris-Saclay Centre d'Etudes de Saclay (CEA), IRFU, Départment de Physique Nucléaire (DPhN), Saclay, FranceBartosz BaliśAGH University of Science and Technology, Cracow, PolandM. BallHelmholtz-Institut für Strahlen- und Kernphysik, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, GermanyD. BanerjeeBose Institute, Department of Physics and Centre for Astroparticle Physics and Space Science (CAPSS), Kolkata, IndiaR. BarberaDipartimento di Fisica e Astronomia dell'Università and Sezione INFN, Catania, ItalyL. BarioglioDipartimento di Fisica dell'Università and Sezione INFN, Turin, ItalyM. BarlouNational and Kapodistrian University of Athens, School of Science, Department of Physics, Athens, GreeceG. G. BarnaföldiWigner Research Centre for Physics, Budapest, HungaryL. S. BarnbyNuclear Physics Group, STFC Daresbury Laboratory, Daresbury, United KingdomV. BarretUniversité Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, FranceC. BartelsUniversity of Liverpool, Liverpool, United KingdomK. BarthEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandE. BartschInstitut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, GermanyF. BaruffaldiDipartimento di Fisica e Astronomia dell'Università and Sezione INFN, Padova, ItalyN. BastidUniversité Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, FranceS. BasuLund University Department of Physics, Division of Particle Physics, Lund, SwedenG. BatigneSUBATECH, IMT Atlantique, Université de Nantes, CNRS-IN2P3, Nantes, FranceB. BatyunyaJoint Institute for Nuclear Research (JINR), Dubna, RussiaD. BauriIndian Institute of Technology Bombay (IIT), Mumbai, IndiaJ. L. Bazo AlbaSección Física, Departamento de Ciencias, Pontificia Universidad Católica del Perú, Lima, PeruI. G. BeardenNiels Bohr Institute, University of Copenhagen, Copenhagen, DenmarkC. BeattieYale University, New Haven, Connecticut, USAI. BelikovUniversité de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France, Strasbourg, FranceA. D. C. Bell HechavarriaWestfälische Wilhelms-Universität Münster, Institut für Kernphysik, Münster, GermanyF. BelliniDipartimento di Fisica e Astronomia dell'Università and Sezione INFN, Bologna, ItalyR. BellwiedUniversity of Houston, Houston, Texas, USAS. BelokurovaSt. Petersburg State University, St. Petersburg, RussiaV. BelyaevNRNU Moscow Engineering Physics Institute, Moscow, RussiaG. BencediInstituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Mexico City, MexicoS. BeolèDipartimento di Fisica dell'Università and Sezione INFN, Turin, ItalyA. BercuciHoria Hulubei National Institute of Physics and Nuclear Engineering, Bucharest, RomaniaY. BerdnikovPetersburg Nuclear Physics Institute, Gatchina, RussiaA. BerdnikovaPhysikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, GermanyL. BergmannPhysikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, GermanyM. G. BesoiuInstitute of Space Science (ISS), Bucharest, RomaniaL. BetevEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandP. P. BhaduriVariable Energy Cyclotron Centre, Homi Bhabha National Institute, Kolkata, IndiaA. BhasinPhysics Department, University of Jammu, Jammu, IndiaM. A. BhatBose Institute, Department of Physics and Centre for Astroparticle Physics and Space Science (CAPSS), Kolkata, IndiaB. BhattacharjeeGauhati University, Department of Physics, Guwahati, IndiaP. BhattacharyaDipartimento di Fisica dell'Università and Sezione INFN, Cagliari, ItalyL. BianchiDipartimento di Fisica dell'Università and Sezione INFN, Turin, ItalyN. BianchiINFN, Laboratori Nazionali di Frascati, Frascati, ItalyJ. BielčíkFaculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Prague, Czech RepublicJ. BielčíkováNuclear Physics Institute of the Czech Academy of Sciences, Řež u Prahy, Czech Republic
2022lv
ABI
Annotatsiya
The ${p}_{T}$-differential production cross sections of prompt ${D}^{0}$, ${\mathrm{\ensuremath{\Lambda}}}_{c}^{+}$, and ${\mathrm{\ensuremath{\Sigma}}}_{c}^{0,++}(2455)$ charmed hadrons are measured at midrapidity ($|y|<0.5$) in $pp$ collisions at $\sqrt{s}=13\text{ }\text{ }\mathrm{TeV}$. This is the first measurement of ${\mathrm{\ensuremath{\Sigma}}}_{c}^{0,++}$ production in hadronic collisions. Assuming the same production yield for the three ${\mathrm{\ensuremath{\Sigma}}}_{c}^{0,+,++}$ isospin states, the baryon-to-meson cross section ratios ${\mathrm{\ensuremath{\Sigma}}}_{c}^{0,+,++}/{D}^{0}$ and ${\mathrm{\ensuremath{\Lambda}}}_{c}^{+}/{D}^{0}$ are calculated in the transverse momentum (${p}_{T}$) intervals $2<{p}_{T}<12$ and $1<{p}_{T}<24\text{ }\mathrm{GeV}/c$. Values significantly larger than in ${e}^{+}{e}^{\ensuremath{-}}$ collisions are observed, indicating for the first time that baryon enhancement in hadronic collisions also extends to the ${\mathrm{\ensuremath{\Sigma}}}_{c}$. The feed-down contribution to ${\mathrm{\ensuremath{\Lambda}}}_{c}^{+}$ production from ${\mathrm{\ensuremath{\Sigma}}}_{c}^{0,+,++}$ is also reported and is found to be larger than in ${e}^{+}{e}^{\ensuremath{-}}$ collisions. The data are compared with predictions from event generators and other phenomenological models, providing a sensitive test of the different charm-hadronization mechanisms implemented in the models.
Hali tarjima qilinmagan
Identifikatorlar
Iqtiboslar va manbalar
4 ta iqtibos0 ta foydalanilgan manba