Multiplicity and net-electric charge fluctuations in central Ar+Sc interactions at 13A, 19A, 30A, 40A, 75A, and 150$$A\,\hbox {GeV}\!/\!c$$ beam momenta measured by NA61/SHINE at the CERN SPS

Abstract This paper presents results on multiplicity fluctuations of positively and negatively charged hadrons as well as net-electric charge fluctuations measured in central Ar+Sc interactions at beam momenta 13 A , 19 A , 30 A , 40 A , 75 A , and 150 $$A\,\hbox {GeV}\!/\!c$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>A</mml:mi> <mml:mspace/> <mml:mtext>GeV</mml:mtext> <mml:mspace/> <mml:mo>/</mml:mo> <mml:mspace/> <mml:mi>c</mml:mi> </mml:mrow> </mml:math> . The fluctuation analysis is one of the tools to search for the predicted critical point of strongly interacting matter. Results are corrected for the experimental biases and quantified using cumulant ratios. In most instances, multiplicity and net-charge distributions appear narrower than the corresponding Poisson or Skellam distributions. Cumulant ratios are compared with the Epos1.99 model predictions, which provide a qualitative description that aligns with observations for positively and negatively charged particles. The obtained results are also compared to earlier NA61/SHINE results from inelastic p+p interactions in the same analysis acceptance.

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Journal
The European Physical Journal C
Published
2025-08-29
DOI
https://doi.org/10.1140/epjc/s10052-025-14621-z
Primary Topic
High-Energy Particle Collisions Research
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article
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article

Multiplicity and net-electric charge fluctuations in central Ar+Sc interactions at 13A, 19A, 30A, 40A, 75A, and 150$$A\,\hbox {GeV}\!/\!c$$ beam momenta measured by NA61/SHINE at the CERN SPS

V. Golovatyuk, O. Wyszyński, P. von Doetinchem, R. Engel et al.
The European Physical Journal C
High-Energy Particle Collisions Research
article

Multiplicity and net-electric charge fluctuations in central Ar+Sc interactions at 13A, 19A, 30A, 40A, 75A, and 150$$A\,\hbox {GeV}\!/\!c$$ beam momenta measured by NA61/SHINE at the CERN SPS

V. Golovatyuk, O. Wyszyński, P. von Doetinchem, R. Engel, R. Szukiewicz, G. I. Lykasov, M. Rumyantsev, H. Adhikary, I. Pidhurskyi, P. Staszel, Ł. Rozpłochowski, A. Ivashkin, Ł. Świderski, M. Gaździcki, M. Buryakov, K. Schmidt, A. Shukla, M. Roth, P. Podlaski, A. Zaitsev, F. Guber, E. Zherebtsova, M. M. Kielbowicz, A. Rustamov, J. Brzychczyk, M. Słodkowski, A. Olivier, Darko Veberič, M. Urbaniak, Y. Balkova, Evgeny Andronov, L. Ren, M. P. Lewicki, V. Paolone, D. Pszczel, Y. Bondar, P. Seyboth, Y. Nagai, M. Rybczyński, T. Matulewicz, M. Kuich, Д. С. Прохорова, K. Gollwitzer, Ł. Mik, O. Vitiuk, W. Kucewicz, K. Sakashita, Y. Koshio, V. Ozvenchuk, D. A. Wickremasinghe, W. Bryliński, D. Rybka, S. Kowalski, M. Friend, O. Panova, D. Tefelski, T. S. Tveter, A. Zviagina, B. Kozłowski, G. L. Melkumov, B. Pórfy, U. A. Shah, M. Ćirković, Hermann-Josef Mathes, R. Tsenov, V. A. Kireyeu, L. Turko, J. Steṕaniak, N. Karpushkin, D. Röhrich, V. Z. Reyna Ortiz, B. Popov, K. K. Allison, J. Cybowska, A. Taranenko, Jarosław Szewiński, P. Adrich, A. Dmitriev, M. Bielewicz, M. Bajda, S. Puławski, S. Ilieva, A. Blondel, R. Płaneta, A. Malakhov, Г. Феофилов, A. Bazgir, M. Bogomilov, Yash Chandak, W. Dominik, K. Grebieszkow, C. Dalmazzone, P. Hurh, M. Golubeva, M. Kuchowicz, M. Maćkowiak-Pawłowska, A. F. Camino, Y. Shiraishi, M. Unger, V. Matveev, J. Dumarchez, A. D. Marino, E. D. Zimmerman, N. Amin, G. Stefanek, L. Fields, A. Marcinek, A. Tefelska, N. Davis, O. Golosov, A. Rybicki, Á. László, I. C. Arsene, V. Lyubushkin, D. Kolev, T. Czopowicz, K. Witek, V. Tereshchenko, T. Nakadaira, A. Krasnoperov, A. Merzlaya, Zoltán Fodor, M. Csanád, J. Lyon, B. Maksiak, S. Bhosale, S. Nishimori, D. Battaglia, Roman A. Kolesnikov, K. Wójcik, S. Morozov
article en

Abstract

Abstract This paper presents results on multiplicity fluctuations of positively and negatively charged hadrons as well as net-electric charge fluctuations measured in central Ar+Sc interactions at beam momenta 13 A , 19 A , 30 A , 40 A , 75 A , and 150 $$A\,\hbox {GeV}\!/\!c$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>A</mml:mi> <mml:mspace/> <mml:mtext>GeV</mml:mtext> <mml:mspace/> <mml:mo>/</mml:mo> <mml:mspace/> <mml:mi>c</mml:mi> </mml:mrow> </mml:math> . The fluctuation analysis is one of the tools to search for the predicted critical point of strongly interacting matter. Results are corrected for the experimental biases and quantified using cumulant ratios. In most instances, multiplicity and net-charge distributions appear narrower than the corresponding Poisson or Skellam distributions. Cumulant ratios are compared with the Epos1.99 model predictions, which provide a qualitative description that aligns with observations for positively and negatively charged particles. The obtained results are also compared to earlier NA61/SHINE results from inelastic p+p interactions in the same analysis acceptance.

The European Physical Journal CVol. 85(8)
Karlsruhe Institute of Technology (DE), Eötvös Loránd University (HU), University of Notre Dame (US), Warsaw University of Technology (PL), University of Hawaiʻi at Mānoa (US), Jagiellonian University (PL), Centre National de la Recherche Scientifique (FR), Fermi National Accelerator Laboratory (US), Okayama University (JP), Jan Kochanowski University (PL), University of Pittsburgh (US), University of Oslo (NO), University of Wrocław (PL), University of Colorado System (US), Sorbonne Université (FR), University of Belgrade (RS), National Centre for Nuclear Research (PL), Institute for Nuclear Research (RU), Laboratoire de Physique Nucléaire et de Hautes Énergies (FR), HUN-REN Wigner Research Centre for Physics (HU), National Nuclear Research Center (AZ), Russian University of Cooperation (RU), Institute of Particle and Nuclear Studies, University of Bergen (NO), University of Warsaw (PL), Sofia University "St. Kliment Ohridski" (BG), AGH University of Krakow (PL), University of Silesia in Katowice (PL), Polish Academy of Sciences (PL)
National Science Foundation, U.S. Department of Energy, CERN, Strong, European Commission, Deutsche Forschungsgemeinschaft, Ministry of Education, Culture, Sports, Science and Technology, Hungarian Scientific Research Fund, Centre National de la Recherche Scientifique, Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, Office of Science, Institut National de Physique Nucléaire et de Physique des Particules, Fermilab
Openalex Percentile: Top 90%
High-Energy Particle Collisions Research
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