Production of φ-mesons in p+p, p+Pb and central Pb+Pb collisions at  GeV

Afanasiev, S.; Antičić, T.; Bächler, J.; Barna, D.; Barnby, L. S.; Bartke, J.; Barton, R. A.; Betev, L.; Białkowska, H.; Billmeier, A.; Blume, C.; Blyth, C. O.; Boimska, B.; Braciník, J.; Brady, F.P.; Brun, R.; Bunčić, P.; Carr, Lincoln D.; Cebra, D.; Cooper, G. E.; Cramer, J. G.; Csató, P.; Eckardt, V.; Eckhardt, F.; Ferenc, D.; Fischer, H. G.; Fodor, Z.; Foka, P.; Freund, P.; Friese, V.; Ftáčnik, J.; Gál, János; Ganz, R.; Gaździcki, M.; Gładysz, E.; Grebieszkow, J.; Harris, J. W.; Hegyi, S.; Hlinka, V.; Höhne, C.; Igo, G.; Ivanov, M.; Jacobs, P.; Janik, R.; Jones, P. G.; Kadija, K.; Kolesnikov, V.; Kowalski, M.; Lasiuk, B.; Lévai, P.; Malakhov, A.; Margetis, S.; Markert, C.; Mayes, B.; Melkumov, G. L.; Mischke, A.; Molnár, J.; Nelson, J. M.; Odyniec, G.; Oldenburg, M.; Pálla, G.; Panagiotou, A.; Petridis, A.; Pikna, M.; Pinsky, L.; Poskanzer, A. M.; Prindle, D.; Pühlhofer, F.; Reid, J. G.; Renfordt, R.; Retyk, W.; Ritter, H. G.; Röhrich, D.; Roland, C.; Roland, G.; Rybicki, A.; Sammer, T.; Sandoval, A.; Sann, H.; Semenov, A.; Schäfer, Erich; Schmitz, N.; Seyboth, P.; Siklér, F.; Sitár, B.; Skrzypczak, E.; Snellings, Raimond; Squier, G.T.A.; Stock, R.; Strmeň, P.; Ströbele, H.; Šuša, T.; Szarka, I.; Szentpétery, I.; Sziklai, J.; Toy, M.; Trainor, T. A.; Trentalange, S.; Ullrich, T.; Varga, D.; Vassiliou, M.; Veres, G. I.; Vesztergombi, G.; Voloshin, S. A.; Vranić, D.; Wang, F.; Weerasundara, D.; Wenig, S.; Whitten, C.; Xu, N.; Yates, T. A.; Yoo, I. K.; Zimányi, J.

doi:10.1016/s0370-2693(00)01023-6

Cited by 172 publications

(96 citation statements)

References 37 publications

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“…1 in comparison with measurements at similar energies in lighter systems [18][19][20] as well as data at higher √ s NN [30][31][32]. Whereas this ratio is flat at energies above √ s NN ≥ 4 GeV with values around 0.15, it is increasing for energies below the NN threshold.…”

Section: Experimental Setup and Data Analysissupporting

confidence: 71%

Studying Strangeness Production with HADES

Schuldes

2018

EPJ Web Conf.

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Abstract. The High-Acceptance DiElectron Spectrometer (HADES) operates in the 1 -2A GeV energy regime in fixed target experiments to explore baryon-rich strongly interacting matter in heavy-ion collisions at moderate temperatures with rare and penetrating probes. We present results on the production of strange hadrons below their respective NN threshold energy in Au+Au collisions at 1.23A GeV ( √ s NN = 2.4 GeV). Special emphasis is put on the enhanced feed-down contribution of φ mesons to the inclusive yield of K − and its implication on the measured spectral shape of K − . Furthermore, we investigate global properties of the system, confronting the measured hadron yields and transverse mass spectra with a Statistical Hadronization Model (SHM) and a blastwave parameterization, respectively. These supplement the world data of the chemical and kinetic freeze-out temperatures.

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Section: Experimental Setup and Data Analysissupporting

confidence: 71%

Studying Strangeness Production with HADES

Schuldes

2018

EPJ Web Conf.

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“…A ratio which has shown an interesting beam energy dependence, especially below the φ production threshold is the φ/K − ratio, which is shown in figure 3 for nuclear collisions at different beam energies, measured by several experiments [17,39,20,40,41,42]. Results from our simulations for most central (b < 3.4 fm) Au+Au collisions are shown as the red line.…”

Section: Strange Resultsmentioning

confidence: 83%

“…where S 3 and S 4 are the spin of the outgoing particles, and p i,j the average momentum of [17,39,20,40,41,42].…”

Section: The Urqmd Modelmentioning

confidence: 99%

Sub-threshold strangeness and charm production in UrQMD

Steinheimer

Bleicher

2017

J. Phys.: Conf. Ser.

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Abstract. We present recent results on the sub-threshold production of strange and charmed hadrons in nuclear collisions. In particular we highlight how the excitation and decay of heavy baryonic resonances can be used to describe the production yield of φ mesons at the SIS18 accelerator and show how this production mechanism also consistently describes the φ nuclear transparency ratio. Including even more massive baryonic resonances in the model we are able to extend our approach and make, for the first time, realistic predictions on the sub-threshold production of J/Ψ and Λc in nuclear collisions at the SIS100 accelerator at FAIR. We find that even at a beam energy of E lab = 6 A GeV, charm physics is feasible at the CBM experiment, which opens up new opportunities to study charmed hadron properties at large baryon densities.

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“…The mid-rapidity yields of pions, kaons and (anti)protons and deuterons [57,58,59,60] are available for these energies. The yields of the complete set of strange (anti)hyperons [61,62,63,64,65] and of φ [66] are published for the top energy and at 40 AGeV. Since the deuteron yield is measured over a reduced range in momentum, we have decided to not include the deuterons in the fitting procedure for all the SPS energies, although the ratio d/p will be shown in the following plots.…”

Section: Spsmentioning

confidence: 99%

Hadron production in central nucleus–nucleus collisions at chemical freeze-out

2006

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We analyze the experimental hadron yield ratios for central nucleus-nucleus collisions in terms of thermal model calculations over a broad energy range, √ s N N =2.7-200 GeV. The fits of the experimental data with the model calculations provide the thermal parameters, temperature and baryo-chemical potential at chemical freezeout. We compare our results with the values obtained in other studies and also investigate more technical aspects such as a potential bias in the fits when fitting particle ratios or yields. Using parametrizations of the temperature and baryonic chemical potential as a function of energy, we compare the model calculations with data for a large variety of hadron yield ratios. We provide quantitative predictions for experiments at LHC energy, as well as for the low RHIC energy of 62.4 GeV. The relation of the determined parameters with the QCD phase boundary is discussed.

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Production of φ-mesons in p+p, p+Pb and central Pb+Pb collisions at GeV

Cited by 172 publications

References 37 publications

Studying Strangeness Production with HADES

Studying Strangeness Production with HADES

Sub-threshold strangeness and charm production in UrQMD

Hadron production in central nucleus–nucleus collisions at chemical freeze-out

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