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Observation of triple J/ψ meson production in proton-proton collisions
dc.contributor.author | Tumasyan, A. | |
dc.contributor.author | Işıldak, Bora | |
dc.date.accessioned | 2023-11-02T08:27:49Z | |
dc.date.available | 2023-11-02T08:27:49Z | |
dc.date.issued | 2023-03 | |
dc.identifier.issn | 1745-2473 | en_US |
dc.identifier.uri | http://hdl.handle.net/10679/8924 | |
dc.identifier.uri | https://www.nature.com/articles/s41567-022-01838-y | |
dc.description.abstract | Protons consist of three valence quarks, two up-quarks and one down-quark, held together by gluons and a sea of quark-antiquark pairs. Collectively, quarks and gluons are referred to as partons. In a proton-proton collision, typically only one parton of each proton undergoes a hard scattering – referred to as single-parton scattering – leaving the remainder of each proton only slightly disturbed. Here, we report the study of double- and triple-parton scatterings through the simultaneous production of three J/ψ mesons, which consist of a charm quark-antiquark pair, in proton-proton collisions recorded with the CMS experiment at the Large Hadron Collider. We observed this process – reconstructed through the decays of J/ψ mesons into pairs of oppositely charged muons – with a statistical significance above five standard deviations. We measured the inclusive fiducial cross-section to be 272−104+141(stat)±17(syst)fb, and compared it to theoretical expectations for triple-J/ψ meson production in single-, double- and triple-parton scattering scenarios. Assuming factorization of multiple hard-scattering probabilities in terms of single-parton scattering cross-sections, double- and triple-parton scattering are the dominant contributions for the measured process. | en_US |
dc.description.sponsorship | BMBWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES and BNSF (Bulgaria); CERN; CAS, MoST, and NSFC (China); MINCIENCIAS (Colombia); MSES and CSF (Croatia); RIF (Cyprus); SENESCYT (Ecuador); MoER, ERC PUT and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRI (Greece); NKFIA (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS, RFBR, and NRC KI (Russia); MESTD (Serbia); SEIDI, CPAN, PCTI, and FEDER (Spain); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU (Ukraine); STFC (UK); DOE and NSF (USA). The copyright of this Article is held by CERN, for the benefit of the CMS Collaboration. | |
dc.language.iso | eng | en_US |
dc.publisher | Nature Research | en_US |
dc.relation.ispartof | Nature Physics | |
dc.rights | openAccess | |
dc.rights | Attribution 4.0 International | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.title | Observation of triple J/ψ meson production in proton-proton collisions | en_US |
dc.type | Article | en_US |
dc.description.version | Publisher version | en_US |
dc.peerreviewed | yes | en_US |
dc.publicationstatus | Published | en_US |
dc.contributor.department | Özyeğin University | |
dc.contributor.authorID | (ORCID 0000-0002-0283-5234 & YÖK ID 124605) Işıldak, Bora | |
dc.contributor.ozuauthor | Işıldak, Bora | |
dc.identifier.volume | 19 | en_US |
dc.identifier.issue | 3 | en_US |
dc.identifier.startpage | 338 | en_US |
dc.identifier.endpage | 350 | en_US |
dc.identifier.wos | WOS:000927936700008 | |
dc.identifier.doi | 10.1038/s41567-022-01838-y | en_US |
dc.identifier.scopus | SCOPUS:2-s2.0-85162051065 | |
dc.relation.publicationcategory | Article - International Refereed Journal - Institutional Academic Staff |
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