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Title On energy densities reached in heavy-ion collisions at the CERN SPS Author info J. Pišút, N. pišútová, B. Tomášik Author Pišút Ján (34%)
Co-authors Pišútová Neva (33%)
Tomášik Boris 1972- (33%)
Source document The European Physical Journal C : Particles and Fields. Vol. 29, no. 1 (2003), pp. 79-85. - Berlin : Springer-Verlag, 2003 Keywords dynamika - dynamics fyzika - physics Language English Country United States of America systematics 53 Annotation We present a few estimates of energy densities reached in heavy-ion collisions at the CERN SPS. The estimates are based on data and models of proton-nucleus and nucleus-nucleus interactions. In all of these estimates the maximum energy density in central Pb+Pb interactions is larger than the critical energy density epsilon(c) approximate to 0.7 GeV/fm(3) following from lattice gauge theory computations. In estimates which we consider as realistic the maximum energy density is about 2epsilon(c). In this way our analysis gives some support to claims that deconfined matter has been produced at the CERN SPS. Any definite statement requires a deeper understanding of formation times of partons and hadrons in nuclear collisions. We also compare our results with implicit energy estimates contained in earlier models of anomalous J/psi suppression in nuclear collisions. URL Link do databázy WoS Public work category ADC No. of Archival Copy 689 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika 
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Title An alternative model of jet suppression at RHIC energies Author info R. Lietava ... [et al.] Author Lietava R. (25%)
Co-authors Pišút Ján (25%)
Pišútová Neva (25%)
Tomášik Boris 1972- (25%)
Source document The European Physical Journal C : Particles and Fields. Vol. 28, no. 1 (2003), pp. 119-122. - Berlin : Springer-Verlag, 2003 Keywords heavy ion collisions quark sector Language English Country United States of America systematics 53 Annotation We propose a simple Glauber-type mechanism for the suppression of jet production up to transverse momenta of about 10 GeV/c at RHIC. For processes in this kinematic region, the formation time is smaller than the interval between two successive hard partonic collisions and the subsequent collision influences the jet production. The number of jets then roughly scales with the number of participants. Proportionality to the number of binary collisions is recovered for very high transverse momenta. The model predicts suppression of jet production in d + Au collisions at RHIC. URL Link do databázy WoS Public work category ADC No. of Archival Copy 40005 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika unrecognised
Title Intermittent behaviour of bremsstrahlung photons produced in hadronic collisions at very high energies Author info Ján Pišút, Neva Pišútová, Boris Tomášik Author Pišút Ján (34%)
Co-authors Pišútová Neva (33%)
Tomášik Boris 1972- (33%)
Source document Physics Letters B. Vol. 368, no. 1-2 (1996), pp. 179-186. - Amsterdam : Elsevier B.V., 1996 Keywords fluctuations fyzika - physics Language English Country Netherlands systematics 53 Annotation Hanbury-Brown and Twiss correlations of bremsstrahlung photons produced in hadronic collisions at very high energies show intermittent features. The phenomenon is due to large longitudinal dimensions of the space-time evolution of hadronic collisions and to the fact that the rapidity of a bremsstrahlung photon need not be close to the rapidity of the charged particle radiating the photon. Public work category ADE No. of Archival Copy 687 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika unrecognised
Title Hanbury-Brown-Twiss correlations of bremsstrahlung photons in nuclear collisions Author info Ján Pišút, Neva Pišútová, Boris Tomášik Author Pišút Ján (34%)
Co-authors Pišútová Neva (33%)
Tomášik Boris 1972- (33%)
Source document Physics letters B. Vol. 345, no. 4 (1995), pp. 553-557. - Amsterdam : Elsevier science, 1995 Keywords heavy ion collisions interferometry Language English Country Netherlands systematics 53 Annotation The dimension of the region emitting particles in nuclear collisions can be determined by Hanbury-Brown and Twiss (HBT) correlations of identical particles. In this note we demonstrate that this dimension as determined by the HBT correlation of bremsstrahlung photons is larger than the actual one due to the photon formation length. Qualitatively r(2)-->r(2)+a/omega(2) where the last term is due to the formation length being proportional to 1/omega, where omega is the energy of the photon. This phenomenon permits to ''see'' experimentally the photon formation length. URL http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS&DestLinkType=FullRecord&UT=WOS:A1995QJ71100037 Public work category ADE No. of Archival Copy 688 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ unrecognised