Two-pion femtoscopic correlations in Be+Be collisions at √sNN=16.84 GeV measured by the NA61/SHINE at CERN

Adhikary, H.; Adrich, P.; Allison, K.K.; Amin, N.; Andronov, E.V.; Antićić, T.; Arsene, I.-C.; Bajda, M.; Balkova, Y.; Baszczyk, M.; Battaglia, D.; Bazgir, A.; Bhosale, S.; Bielewicz, M.; Blondel, A.; Bogomilov, M.; Bondar, Y.; BOSTAN, NİLAY; Brandin, A.; Bryliński, W.; Brzychczyk, J.; Buryakov, M.; Camino, A.F.; Ćirković, M.; Csanád, M.; Cybowska, J.; Czopowicz, T.; Dalmazzone, C.; Davis, N.; Dmitriev, A.; von Doetinchem, P.; Dominik, W.; Dorosz, P.; Dumarchez, J.; Engel, R.; Feofilov, G.A.; Fields, L.; Fodor, Z.; Friend, M.; Garibov, A.; Gaździcki, M.; Golosov, O.; Golovatyuk, V.; Golubeva, M.; Grebieszkow, K.; Guber, F.; Igolkin, S.N.; Ilieva, S.; Ivashkin, A.; Izvestnyy, A.; Kadija, K.; Kargin, N.; Karpushkin, N.; Kashirin, E.; Kiełbowicz, M.; Kireyeu, V.A.; Kitagawa, H.; Kolesnikov, R.; Kolev, D.; Koshio, Y.; Kovalenko, V.N.; Kowalski, S.; Kozłowski, B.; Krasnoperov, A.; Kucewicz, W.; Kuchowicz, M.; Kuich, M.; Kurepin, A.; László, A.; Lewicki, M.; Lykasov, G.; Lyubushkin, V.V.; Maćkowiak-Pawłowska, M.; Majka, Z.; Makhnev, A.; Maksiak, B.; Malakhov, A.I.; Marcinek, A.; Marino, A.D.; Marton, K.; Mathes, H.-J.; Matulewicz, T.; Matveev, V.; Melkumov, G.L.; Merzlaya, A.; Mik, Ł.; Morawiec, A.; Morozov, S.; Nagai, Y.; Nakadaira, T.; Naskręt, M.; Nishimori, S.; Ozvenchuk, V.; Panova, O.; Paolone, V.; Petukhov, O.; Pidhurskyi, I.; Płaneta, R.; Podlaski, P.; Popov, B.A.; Pórfy, B.; Posiadała-Zezula, M.; Prokhorova, D.S.; Pszczel, D.; Puławski, S.; Puzović, J.; Renfordt, R.; Ren, L.; Ortiz, V.; Röhrich, D.; Rondio, E.; Roth, M.; Rozpłochowski, Ł.; Rumberger, B.T.; Rumyantsev, M.; Rustamov, A.; Rybczynski, M.; Rybicki, A.; Sakashita, K.; Schmidt, K.; Seryakov, A.; Seyboth, P.; Shah, U.A.; Shiraishi, Y.; Shukla, A.; Słodkowski, M.; Staszel, P.; Stefanek, G.; Stepaniak, J.; Strikhanov, M.; Ströbele, H.; Šuša, T.; Świderski, Ł.; Szewiński, J.; Szukiewicz, R.; Taranenko, A.; Tefelska, A.; Tefelski, D.; Tereshchenko, V.; Toia, A.; Tsenov, R.; Turko, L.; Tveter, T.S.; Unger, M.; Urbaniak, M.; Valiev, F.F.; Veberič, D.; Vechernin, V.V.; Volkov, V.; Wickremasinghe, A.; Wójcik, K.; Wyszyński, O.; Zaitsev, A.; Zimmerman, E.D.; Zviagina, A.; Zwaska, R.

doi:10.1140/epjc/s10052-023-11997-8

Two-pion femtoscopic correlations in Be+Be collisions at √sNN=16.84 GeV measured by the NA61/SHINE at CERN

Adhikary H., Adrich P., Allison K., Amin N., Andronov E., Antićić T., ...Daha Fazla

European Physical Journal C, cilt.83, sa.10, 2023 (SCI-Expanded, Scopus)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 83 Sayı: 10
Basım Tarihi: 2023
Doi Numarası: 10.1140/epjc/s10052-023-11997-8
Dergi Adı: European Physical Journal C
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, INSPEC, zbMATH, Directory of Open Access Journals, Nature Index
Marmara Üniversitesi Adresli: Hayır

Özet

This paper reports measurements of two-pion femtoscopic correlations in Be+Be collisions at a beam momentum of 150 AGeV/c (energy available in the center-of-mass system for nucleon pair sNN=16.84 GeV) by the NA61/SHINE experiment at the CERN SPS accelerator. The obtained momentum space correlation functions can be well described by a Lévy distributed source model. The transverse mass dependence of the Lévy source parameters is presented, and their possible theoretical interpretations are discussed. The results show that the Lévy exponent α is approximately constant as a function of mT , and far from both the Gaussian case of α= 2 or the conjectured value at the critical endpoint, α= 0.5 . The radius scale parameter R shows a slight decrease in mT , which can be explained as a signature of transverse flow. Finally, an approximately constant trend of the intercept parameter λ as a function of mT was observed, similar to previous NA44 S + Pb results (obtained with a Gaussian approximation, but unlike RHIC results).