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Observation of Coherent 𝜙(1020) Meson Photoproduction in Ultraperipheral PbPb Collisions at √𝑠NN=5.36 TeV

ArticleAçık Erişim

Özet

The first observation of coherent (Formula presented) meson photoproduction off heavy nuclei is presented using ultraperipheral lead-lead collisions at a center-of-mass energy per nucleon pair of 5.36 TeV. The data were collected by the CMS experiment and correspond to an integrated luminosity of (Formula presented). The (Formula presented) meson signals are reconstructed via the (Formula presented) decay channel. The production cross section is presented as a function of the (Formula presented) meson rapidity in the range (Formula presented), probing gluons that carry a fraction of the nucleon momentum ((Formula presented)) around (Formula presented). The observed cross section exhibits little dependence on rapidity and is significantly suppressed, by a factor of (Formula presented), compared to a baseline model that treats a nucleus as a collection of free nucleons. Theoretical models that incorporate the nuclear shadowing effect generally provide a better description of the (Formula presented) data than those incorporating gluon saturation. This study establishes a powerful new tool for exploring nuclear effects and nuclear gluonic structure in the small-(Formula presented) regime at a unique energy scale bridging the perturbative and nonperturbative quantum chromodynamics domains. © 2025 CERN, for the CMS Collaboration.

Anahtar Kelimeler

AstrophysicsBinary alloysBosonsLead compoundsNuclear reactionsQuantum theoryTellurium compoundsA-centerCenter-of-mass energiesCentre-of-mass energiesDecay channelsHeaviest nucleiIntegrated luminosityLead collisionsMeson photoproductionPb-Pb collisionsProduction cross sectionarticlecontrolled studymesonHadrons
RDL Kalıcı Bağlantı (PID)
https://rdlopen.rawdatalibrary.net/r/ebyu/10810Resmi atıflarda kullanılan kalıcı adres
DOI
https://doi.org/10.1103/2ssw-wwyyYayıncı resmi DOI adresi
Tam Kayıt
AlanDeğerDil
dc.contributor.authorChekhovsky, V.
dc.contributor.authorHayrapetyan, A.
dc.contributor.authorMakarenko, V.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAndrejkovic, J.W.
dc.contributor.authorBenato, L.
dc.contributor.authorBergauer, T.
dc.contributor.authorDamanakis, K.
dc.contributor.authorDragicevic, M.
dc.contributor.authorGiordano, C.
dc.contributor.authorHussain, P.S.
dc.contributor.authorJeitler, M.
dc.contributor.authorKrammer, N.
dc.contributor.authorLi, A.
dc.contributor.authorLiko, D.
dc.contributor.authorMikulec, I.
dc.contributor.authorSchieck, J.
dc.contributor.authorSchöfbeck, R.
dc.contributor.authorSchwarz, D.
dc.contributor.authorSonawane, M.
dc.contributor.authorWaltenberger, W.
dc.contributor.authorWulz, C.-E.
dc.contributor.authorJanssen, T.
dc.contributor.authorKwon, H.
dc.contributor.authorVan Laer, T.
dc.contributor.authorVan Mechelen, P.
dc.contributor.authorBreugelmans, N.
dc.contributor.authorD’Hondt, J.
dc.contributor.authorDansana, S.
dc.contributor.authorDe Moor, A.
dc.contributor.authorDelcourt, M.
dc.contributor.authorHeyen, F.
dc.contributor.authorHong, Y.
dc.contributor.authorLowette, S.
dc.contributor.authorMakarenko, I.
dc.contributor.authorMüller, D.
dc.contributor.authorTavernier, S.
dc.contributor.authorTytgat, M.
dc.contributor.authorVan Onsem, G.P.
dc.contributor.authorVan Putte, S.
dc.contributor.authorVannerom, D.
dc.contributor.authorBilin, B.
dc.contributor.authorClerbaux, B.
dc.contributor.authorDas, A.K.
dc.contributor.authorDe Bruyn, I.
dc.contributor.authorDe Lentdecker, G.
dc.contributor.authorEvard, H.
dc.contributor.authorFavart, L.
dc.contributor.authorGianneios, P.
dc.date.accessioned2026-10-18T20:25:56.589183470Z
dc.date.available2026-10-18T20:25:56.589183470Z
dc.date.issued2025
dc.description.abstractThe first observation of coherent (Formula presented) meson photoproduction off heavy nuclei is presented using ultraperipheral lead-lead collisions at a center-of-mass energy per nucleon pair of 5.36 TeV. The data were collected by the CMS experiment and correspond to an integrated luminosity of (Formula presented). The (Formula presented) meson signals are reconstructed via the (Formula presented) decay channel. The production cross section is presented as a function of the (Formula presented) meson rapidity in the range (Formula presented), probing gluons that carry a fraction of the nucleon momentum ((Formula presented)) around (Formula presented). The observed cross section exhibits little dependence on rapidity and is significantly suppressed, by a factor of (Formula presented), compared to a baseline model that treats a nucleus as a collection of free nucleons. Theoretical models that incorporate the nuclear shadowing effect generally provide a better description of the (Formula presented) data than those incorporating gluon saturation. This study establishes a powerful new tool for exploring nuclear effects and nuclear gluonic structure in the small-(Formula presented) regime at a unique energy scale bridging the perturbative and nonperturbative quantum chromodynamics domains. © 2025 CERN, for the CMS Collaboration.
dc.description.sponsorshipWe congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centers and personnel of the Worldwide LHC Computing Grid and other centers for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC, the CMS detector, and the supporting computing infrastructure provided by the following funding agencies: SC (Armenia), 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); ERC PRG, RVTT3 and MoER TK202 (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); SRNSF (Georgia); BMBF, DFG, and HGF (Germany); GSRI (Greece); NKFIH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); LMTLT (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MES and NSC (Poland); FCT (Portugal); MESTD (Serbia); MICIU/AEI and PCTI (Spain); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); MHESI and NSTDA (Thailand); TUBITAK and TENMAK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (USA).
dc.identifier.doi10.1103/2ssw-wwyy
dc.identifier.issn0031-9007
dc.identifier.issue26
dc.identifier.pmid41557409
dc.identifier.scopus2-s2.0-105026120906
dc.identifier.startpage262301
dc.identifier.urihttps://rdlopen.rawdatalibrary.net/r/ebyu/10810
dc.identifier.volume135
dc.language.isoen
dc.publisherAmerican Physical Society
dc.relation.ispartofPhysical Review Letters
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectAstrophysics
dc.subjectBinary alloys
dc.subjectBosons
dc.subjectLead compounds
dc.subjectNuclear reactions
dc.subjectQuantum theory
dc.subjectTellurium compounds
dc.subjectA-center
dc.subjectCenter-of-mass energies
dc.subjectCentre-of-mass energies
dc.subjectDecay channels
dc.subjectHeaviest nuclei
dc.subjectIntegrated luminosity
dc.subjectLead collisions
dc.subjectMeson photoproduction
dc.subjectPb-Pb collisions
dc.subjectProduction cross section
dc.subjectarticle
dc.subjectcontrolled study
dc.subjectmeson
dc.subjectHadrons
dc.titleObservation of Coherent 𝜙(1020) Meson Photoproduction in Ultraperipheral PbPb Collisions at √𝑠NN=5.36 TeV
dc.typeArticle
dspace.entity.typePublication
rdl.citation.scopus2
rdl.oa.statusgold
rdl.source.indexSCOPUS