Net-proton number fluctuations in the presence of the QCD critical point

Adam, J.; J., Adam,; L., Adamczyk,; Adams, J. R.; Adkins, J. K.; Agakishiev, G.; Aggarwal, M. M.; Ahammed, Z.; I, Alekseev,; Anderson, D. M.; R., Aoyama,; Aparin, A.; D., Arkhipkin,; Ashraf, M. U.; Atetalla, F.; Attri, A.; Averichev, G. S.; Bai, X.; Bairathi, V; Barish, K.; Bassill, A. J.; A., Behera,; Beliwied, R.; A., Bhasin,; Bhati, A. K.; Bielcik, J.; J., Bielcikova,; Bland, L. C.; Bordyuzhin, I. G.; Brandenburg, J. D.; Aschenauer, E. C.; D., Brown,; J., Bryslawskyj,; Bunzarov, I; J., Butterworth,; Caines, H.; Sánchez,; D., Cebra,; Chakaberia, I; P., Chaloupka,; Chan, B. K.; Chang, F-H.; Chang, Z.; Chankova-Bunzarova, N.; Chatterjee, A.; S., Chattopadhyay,; Chen, J. H.; Chen, X.; J., Cheng,; M., Cherney,; W., Christie,; Contin, G.; Crawford, H. J.; Csanad, M.; Das, S.; Dedovich, T. G.; Deppner, I. M.; Derevschikov, A. A.; L., Didenko,; C., Dilks,; Dong, X.; Drachenberg, J. L.; Dunlop, J. C.; G., Efimov, L.; Elsey, N.; J., Engelage,; Eppley, G.; Esha, R.; S., Esumi,; Ewigleben, J.; Fatemi, R.; Fazio, S.; P., Federic,; J., Fedorisin,; P., Filip,; E., Finch,; Fisyak, Y.; Flores, C. E.; L., Fulek,; Gagliardi, C. A.; Galatyuk, T.; Geurts, F.; Gibson, A.; D., Grosnick,; Gunarathne, D. S.; Y., Guo,; Gupta, A.; Guryn, W.; Flamed, A.; Harlenderova, A.; O., Evdokimov,; O., Eyser,; Harris, J. W.; L., He,; Heppelmann, S.; Herrmann, N.; A., Hirsch,; L., Holub,; Y., Hong,; Horvat, S.; B., Huang,; Huang, H. Z.; Huang, S. L.; T., Huang,; Huang, X.; Humanic, T. J.; Huo, P.; Igo, G.; Jacobs, W. W.; Jentsch, A.; Jia, J.; K., Jiang,; Jowzaee, S.; X., Ju,; Judd, E. G.; S., Kabana,; Kagamaster, S.; Kalinkin, D.; Kang, K.; Kapukchyan, D.; Kauder, K.; Ke, H. W.; Keane, D.; Kechechyan, A.; Kikola, D. P.; Kim, C.; Kinghorn, T. A.; Kisel, I; Kisiel, A.; M., Kocan,; L., Kochenda,; Kosarzewski, L. K.; Kraishan, A. F.; L., Kramarik,; L., Krauth,; P., Kravtsov,; K., Krueger,; Kulathunga, N.; Kumar, L.; Elayavalli, R. K.; Kvapil, J.; Kwasizur, J. H.; R., Lacey,; Landgraf, J. M.; J., Lauret,; A., Lebedev,; Lednicky, R.; Lee, J. H.; Li, C.; Li, W.; Li, X.; Li, Y.; Y., Liang,; Licenik, R.; J., Lidrych,; T., Lin,; Lipiec, A.; Lisa, M. A.; Liu, F.; Liu, H.; Liu, P.; Liu, Y.; Liu, Z.; T., Ljubicic,; Llope, W. J.; Lomnitz, M.; Longacre, R. S.; Luo, S.; Luo, X.; Ma, G. L.; L., Ma,; R., Ma,; Ma, Y. G.; N., Magdy,; R., Majka,; D., Mallick,; Margetis, S.; C., Markert,; Matis, H. S.; Matonoha, O.; Mazer, J. A.; K., Meehan,; Mei, J. C.; Minaev, N. G.; Mioduszewski, S.; D., Mishra,; Mohanty, B.; Mondal, M. M.; I, Mooney,; Moravcova, Z.; Morozov, D. A.; Nasim, Md.; Nayak, K.; Negrete, J. D.; Nelson, J. M.; Nemes, D. B.; Nie, M.; Nigmatkulov, G.; Niida, T.; T., Nonaka,; G., Odyniec,; Ogawa, A.; Oh, K.; S., Oh,; Okorokov, V. A.; Page, B. S.; Pak, R.; Y., Panebratsev,; Pawlik, B.; H., Pei,; C., Perkins,; Pinter, R. L.; Pluta, J.; J., Porter,; M., Posik,; Pruthi, N. K.; M., Przybycien,; J., Putschke,; Quintero, A.; Radhakrishnan, S. K.; Ramachandran, S.; Ray, R. L.; R., Reed,; Ritter, H. G.; Roberts, J. B.; Romero, J. L.; Ruan, L.; Rusnak, J.; Sahoo, N. R.; Sahu, P. K.; S., Salur,; Sandweiss, J.; Schambach, J.; Schmah, A. M.; Schmidke, W. B.; Schmitz, N.; Schweid, B. R.; F., Seck,; J., Seger,; Sergeeva, M.; R., Seto,; P., Seyboth,; N., Shah,; Shahaliev, E.; Shao, M.; Shen, F.; Shen, W. Q.; Shi, S. S.; Shou, Q. Y.; Sichtermann, E. P.; Siejka, S.; Sikora, R.; Simko, M.; Rusnakova, O.; Singh, J.; S., Singha,; D., Smirnov,; Smirnov, N.; Solyst, W.; Sorensen, P.; Spinka, H. M.; Srivastava, B.; Stanislaus,; Stewart, D. J.; Strikhanov, M.; B., Stringfellow,; Suaide,; T., Sugiura,; M., Sumbera,; Summa, B.; Sun, X. M.; Sun, Y.; Surrow, B.; Svirida, D. N.; P., Szymanski,; Tang, A. H.; Tang, Z.; Taranenko, A.; Tarnowsky, T.; Thomas, J. H.; Timmins, A. R.; D., Tlusty,; T., Todoroki,; Tokarev, M.; Tomkiel, C. A.; S., Trentalange,; Tribble, R. E.; Tribedy, P.; Tripathy, S. K.; Tsai, O. D.; B., Tu,; Ullrich, T.; Underwood, D. G.

doi:10.48550/arxiv.1905.00667

Cited by 3 publications

(13 citation statements)

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“…In hadron resonance gas (HRG) approaches and refined effective models, such as the Polyakov-loop enhanced Nambu-Jona-Lasinio model and the Polyakov-loop quarkmeson model (PQM), a wealth of interesting results on fluctuations have been obtained already, see, e.g., Refs. [20,[44][45][46][47][48][49][50][51][52][53][54] and references therein. Concerning the Yang-Mills sector, these models rely on the Polyakov loop potential that couples aspects of confinement to the chiral dynamics, however without backcoupling.…”

Section: Introductionmentioning

confidence: 99%

Baryon number fluctuations in the QCD phase diagram from Dyson-Schwinger equations

et al. 2019

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We present results for fluctuations of the baryon number for QCD at non-zero temperature and chemical potential. These are extracted from solutions to a coupled set of truncated Dyson-Schwinger equations for the quark and gluon propagators of Landau gauge QCD with N f = 2 + 1 quark flavors, that has been studied previously. We discuss the changes of fluctuations and ratios thereof up to fourth order for several temperatures and baryon chemical potential up to and beyond the critical end point. In the context of preliminary STAR data for the skewness and kurtosis ratios, the results are compatible with the scenario of a critical end point at large chemical potential and slightly offset from the freeze-out line. We also discuss the caveats involved in this comparison.

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Section: Introductionmentioning

confidence: 99%

Baryon number fluctuations in the QCD phase diagram from Dyson-Schwinger equations

et al. 2019

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“…A detailed discussion of the remaining model parameters and their values can be found in Refs. [6,7].…”

Section: Numerical Resultsmentioning

confidence: 99%

“…A detailed discussion of the mapping as well as the magnetic equation of state is presented in the papers [6,7].…”

Section: Model Setupmentioning

confidence: 99%

“…To take that effect into account, the model introduced in Ref. [6] was modified [7]. The modification is based on the following relation obtained within the effective model calculations for O(4) and tricritical points [9,10],…”

Section: Model Setupmentioning

confidence: 99%

“…However, it also exhibited the strong non-monotonic behavior of the C 2 /C 1 ratio which is not observed experimentally. Recently, that model was modified [7] to take into account the impact of the underlying O(4) criticality on the scaling properties of the baryon number and chiral susceptibilities [8,9,10] which allows for a better description of the C 2 /C 1 ratio. We present ratios of net-proton number cumulants obtained using the refined model and discuss their dependence on the coupling strength between critical mode and (anti)protons and the location of the critical point.…”

Section: Introductionmentioning

confidence: 99%

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Impact of the underlying O(4) criticality on net-proton number fluctuations

Szymański¹

2020

Preprint

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We discuss the beam-energy dependence of ratios of the first four cumulants of the net-proton number, calculated using a phenomenologically motivated model in which critical mode fluctuations couple to protons and anti-protons. The model takes into account an impact of the underlying O(4) criticality on the QCD phase diagram in the presence of a Z(2) critical point. This allows us to capture qualitatively both the monotonic behavior of the lowest-order ratio and the non-monotonic behavior of higher-order ratios which are seen in the experimental data from the STAR Collaboration. We also discuss the dependence of our results on the coupling strength between the critical mode and the protons as well as the location of the critical point.

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Searching for the QCD Critical Point with Net-Proton Number Fluctuations

Szymański¹,

Bluhm²,

Redlich³

et al. 2019

Ukr. J. Phys.

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PACS 25.75.Nq, 25.75.Gz Net-proton number fluctuations can be measured experimentally and hence provide a source of important information about the matter created during relativistic heavy ion collisions. Particularly, they may give us clues about the conjectured QCD critical point. In this work the beam-energy dependence of ratios of the first four cumulants of the net-proton number is discussed. These quantities are calculated using a phenomenologically motivated model in which critical mode fluctuations couple to protons and anti-protons. Our model qualitatively captures both the monotonic behavior of the lowest-order ratio as well as the non-monotonic behavior of higher-order ratios, as seen in the experimental data from the STAR Collaboration. We also discuss the dependence of our results on the coupling strength and the location of the critical point. K e y w o r d s: net-proton number fluctuations, QCD critical point, heavy-ion collisions

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Net-proton number fluctuations in the presence of the QCD critical point

Cited by 3 publications

References 0 publications

Baryon number fluctuations in the QCD phase diagram from Dyson-Schwinger equations

Baryon number fluctuations in the QCD phase diagram from Dyson-Schwinger equations

Impact of the underlying O(4) criticality on net-proton number fluctuations

Searching for the QCD Critical Point with Net-Proton Number Fluctuations

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