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arXiv · 2010.01864

Measurements of $π^\pm$, $K^\pm$, $p$ and $\bar{p}$ spectra in $^7$Be+$^9$Be collisions at beam momenta from 19$A$ to 150$A$ GeV/$c$ with the NA61/SHINE spectrometer at the CERN SPS

SHINE Collaboration·A. Acharya·H. Adhikary·A. Aduszkiewicz·K. K. Allison·E. V. Andronov·T. Antićić·V. Babkin·M. Baszczyk·S. Bhosale·A. Blondel·M. Bogomilov·A. Brandin·A. Bravar·W. Bryliński·J. Brzychczyk·M. Buryakov·O. Busygina·A. Bzdak·H. Cherif·M. Ćirković·M. Csanad·J. Cybowska·T. Czopowicz·A. Damyanova·N. Davis·M. Deliyergiyev·M. Deveaux·A. Dmitriev·W. Dominik·P. Dorosz·J. Dumarchez·R. Engel·G. A. Feofilov·L. Fields·Z. Fodor·A. Garibov·M. Gaździcki·O. Golosov·V. Golovatyuk·M. Golubeva·K. Grebieszkow·F. Guber·A. Haesler·S. N. Igolkin·S. Ilieva·A. Ivashkin·S. R. Johnson·K. Kadija·N. Kargin·E. Kashirin·M. Kiełbowicz·V. A. Kireyeu·V. Klochkov·V. I. Kolesnikov·D. Kolev·A. Korzenev·V. N. Kovalenko·S. Kowalski·M. Koziel·B. Kozłowski·A. Krasnoperov·W. Kucewicz·M. Kuich·A. Kurepin·D. Larsen·A. László·T. V. Lazareva·M. Lewicki·K. Łojek·V. V. Lyubushkin·M. Maćkowiak-Pawłowska·Z. Majka·B. Maksiak·A. I. Malakhov·A. Marcinek·A. D. Marino·K. Marton·H. -J. Mathes·T. Matulewicz·V. Matveev·G. L. Melkumov·A. O. Merzlaya·B. Messerly·Ł. Mik·S. Morozov·S. Mrówczyński·Y. Nagai·M. Naskręt·V. Ozvenchuk·V. Paolone·O. Petukhov·R. Płaneta·P. Podlaski·B. A. Popov·B. Porfy·M. Posiadała-Zezula·D. S. Prokhorova·D. Pszczel·S. Puławski
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Abstract

The NA61/SHINE experiment at the CERN Super Proton Synchrotron (SPS) studies the onset of deconfinement in hadron matter by a scan of particle production in collisions of nuclei with various sizes at a set of energies covering the SPS energy range. This paper presents results on inclusive double-differential spectra, transverse momentum and rapidity distributions and mean multiplicities of $π^\pm$, $K^\pm$, $p$ and $\bar{p}$ produced in the 20$\%$ most $central$ $^7$Be+$^9$Be collisions at beam momenta of 19$A$, 30$A$, 40$A$, 75$A$ and 150$A$ GeV/$c$. The energy dependence of the $K^\pm$/$π^\pm$ ratios as well as of inverse slope parameters of the $K^\pm$ transverse mass distributions are close to those found in inelastic $p$+$p$ reactions. The new results are compared to the world data on $p$+$p$ and Pb+Pb collisions as well as to predictions of the EPOS, UrQMD, AMPT, PHSD and SMASH models.

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SHINE Collaboration, A. Acharya, H. Adhikary, A. Aduszkiewicz, K. K. Allison, E. V. Andronov, T. Antićić, V. Babkin, M. Baszczyk, S. Bhosale, A. Blondel, M. Bogomilov, A. Brandin, A. Bravar, W. Bryliński, J. Brzychczyk, M. Buryakov, O. Busygina, A. Bzdak, H. Cherif, M. Ćirković, M. Csanad, J. Cybowska, T. Czopowicz, A. Damyanova, N. Davis, M. Deliyergiyev, M. Deveaux, A. Dmitriev, W. Dominik, P. Dorosz, J. Dumarchez, R. Engel, G. A. Feofilov, L. Fields, Z. Fodor, A. Garibov, M. Gaździcki, O. Golosov, V. Golovatyuk, M. Golubeva, K. Grebieszkow, F. Guber, A. Haesler, S. N. Igolkin, S. Ilieva, A. Ivashkin, S. R. Johnson, K. Kadija, N. Kargin, E. Kashirin, M. Kiełbowicz, V. A. Kireyeu, V. Klochkov, V. I. Kolesnikov, D. Kolev, A. Korzenev, V. N. Kovalenko, S. Kowalski, M. Koziel, B. Kozłowski, A. Krasnoperov, W. Kucewicz, M. Kuich, A. Kurepin, D. Larsen, A. László, T. V. Lazareva, M. Lewicki, K. Łojek, V. V. Lyubushkin, M. Maćkowiak-Pawłowska, Z. Majka, B. Maksiak, A. I. Malakhov, A. Marcinek, A. D. Marino, K. Marton, H. -J. Mathes, T. Matulewicz, V. Matveev, G. L. Melkumov, A. O. Merzlaya, B. Messerly, Ł. Mik, S. Morozov, S. Mrówczyński, Y. Nagai, M. Naskręt, V. Ozvenchuk, V. Paolone, O. Petukhov, R. Płaneta, P. Podlaski, B. A. Popov, B. Porfy, M. Posiadała-Zezula, D. S. Prokhorova, D. Pszczel, S. Puławski. 2023-01-07. Measurements of $π^\pm$, $K^\pm$, $p$ and $\bar{p}$ spectra in $^7$Be+$^9$Be collisions at beam momenta from 19$A$ to 150$A$ GeV/$c$ with the NA61/SHINE spectrometer at the CERN SPS. https://doi.org/10.1140/epjc%2Fs10052-020-08733-x

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