Proton-proton interactions and onset of deconfinement

preprint2020arXivOpen access
SHINE CollaborationA. AduszkiewiczE. V. AndronovT. AntićićV. BabkinM. BaszczykS. BhosaleA. BlondelM. BogomilovA. BrandinA. BravarW. BrylińskiJ. BrzychczykM. BuryakovO. BusyginaA. BzdakH. CherifM. ĆirkovićM. CsanadJ. CybowskaT. CzopowiczA. DamyanovaN. DavisM. DeliyergiyevM. DeveauxA. DmitrievW. DominikP. DoroszJ. DumarchezR. EngelG. A. FeofilovL. FieldsZ. FodorA. GaribovM. GaździckiO. GolosovV. GolovatyukM. GolubevaK. GrebieszkowF. GuberA. HaeslerS. N. IgolkinS. IlievaA. IvashkinS. R. JohnsonK. KadijaN. KarginE. KashirinM. KiełbowiczV. A. KireyeuV. KlochkovV. I. KolesnikovD. KolevA. KorzenevV. N. KovalenkoS. KowalskiM. KozielA. KrasnoperovW. KucewiczM. KuichA. KurepinD. LarsenA. LászlóT. V. LazarevaM. LewickiK. ŁojekV. V. LyubushkinM. Maćkowiak-PawłowskaZ. MajkaB. MaksiakA. I. MalakhovA. MarcinekA. D. MarinoK. MartonH. -J. MathesT. MatulewiczV. MatveevG. L. MelkumovA. O. MerzlayaB. MesserlyŁ. MikS. MorozovS. MrówczyńskiY. NagaiM. NaskrętV. OzvenchukV. PaoloneO. PetukhovR. PłanetaP. PodlaskiB. A. PopovB. PorfyM. Posiadała-ZezulaD. S. ProkhorovaD. PszczelS. PuławskiJ. PuzovićM. RavonelR. RenfordtD. RöhrichE. RondioM. RothB. T. RumbergerM. RumyantsevA. RustamovM. RybczynskiA. RybickiA. SadovskyK. SchmidtI. SelyuzhenkovA. Yu. SeryakovP. SeybothM. SłodkowskiP. StaszelG. StefanekJ. StepaniakM. StrikhanovH. StröbeleT. ŠušaA. TaranenkoA. TefelskaD. TefelskiV. TereshchenkoA. ToiaR. TsenovL. TurkoR. UlrichM. UngerF. F. ValievD. VeberičV. V. VecherninA. WickremasingheZ. WłodarczykO. WyszyńskiE. D. ZimmermanR. Zwaska

Abstract

The NA61/SHINE experiment at the CERN SPS is performing a uniqe study of the phase diagram of strongly interacting matter by varying collision energy and nuclear mass number of colliding nuclei. In central Pb+Pb collisions the NA49 experiment found structures in the energy dependence of several observables in the CERN SPS energy range that had been predicted for the transition to a deconfined phase. New measurements of NA61/SHINE find intriguing similarities in p+p interactions for which no deconfinement transition is expected at SPS energies. Possible implications will be discussed.

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