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K^{}(892)^0$$ meson production in inelastic p+p interactions at 40 and 80 $$\text{ GeV }\!/\!c$$ beam momenta measured by NA61/SHINE at the CERN SPS

Abstract Measurements of $$K^{*}(892)^0$$ K ∗ ( 892 ) 0 resonance production via its $$K^{+}\pi ^{-}$$ K + π - decay mode in inelastic p+p collisions at beam momenta 40 and 80  $$\text{ GeV }\!/\!c$$ GeV / c ( $$\sqrt{s_{NN}}=8.8$$ s NN = 8.8 and 12.3  $$\text{ GeV }$$ GeV ) are presented. The data...

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Published in:The European physical journal. C, Particles and fields Particles and fields, 2022-04, Vol.82 (4), Article 322
Main Authors: Acharya, A., Adhikary, H., Allison, K. K., Amin, N., Andronov, E. V., Antićić, T., Arsene, I. -C., Battagia, D., Bhosale, S., Bogomilov, M., Brandin, A., Bravar, A., Bryliński, W., Buryakov, M., Ćirković, M., Csanad, M., Cybowska, J., Czopowicz, T., Dmitriev, A., Dumarchez, J., Engel, R., Feofilov, G. A., Fields, L., Fodor, Z., Friend, M., Golosov, O., Golubeva, M., Ilieva, S., Ivashkin, A., Izvestnyy, A., Kargin, N., Kashirin, E., Kiełbowicz, M., Kireyeu, V. A., Kolesnikov, R., Kolev, D., Kovalenko, V. N., Kozłowski, B., Krasnoperov, A., Kuich, M., Kurepin, A., Lewicki, M., Lykasov, G., Lyubushkin, V. V., Maćkowiak-Pawłowska, M., Majka, Z., Makhnev, A., Malakhov, A. I., Marcinek, A., Marino, A. D., Mathes, H. -J., Matveev, V., Matyja, A., Melkumov, G. L., Merzlaya, A. O., Messerly, B., Morozov, S., Nagai, Y., Nakadaira, T., Naskręt, M., Ozvenchuk, V., Paolone, V., Petukhov, O., Płaneta, R., Popov, B. A., Prokhorova, D. S., Pszczel, D., Puławski, S., Puzović, J., Ravonel, M., Renfordt, R., Röhrich, D., Rondio, E., Rumyantsev, M., Rybicki, A., Sadhu, S., Sakashita, K., Schmidt, K., Seryakov, A. Yu, Słodkowski, M., Staszel, P., Stefanek, G., Stepaniak, J., Strikhanov, M., Ströbele, H., Šuša, T., Taranenko, A., Tefelska, A., Tefelski, D., Tereshchenko, V., Toia, A., Turko, L., Tveter, T. S., Unger, M., Volkov, V., Wójcik, K., Zaitsev, A., Zimmerman, E. D., Zviagina, A., Zwaska, R.
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Summary:Abstract Measurements of $$K^{*}(892)^0$$ K ∗ ( 892 ) 0 resonance production via its $$K^{+}\pi ^{-}$$ K + π - decay mode in inelastic p+p collisions at beam momenta 40 and 80  $$\text{ GeV }\!/\!c$$ GeV / c ( $$\sqrt{s_{NN}}=8.8$$ s NN = 8.8 and 12.3  $$\text{ GeV }$$ GeV ) are presented. The data were recorded by the NA61/SHINE hadron spectrometer at the CERN Super Proton Synchrotron. The template method was used to extract the $$K^{*}(892)^0$$ K ∗ ( 892 ) 0 signal. Transverse momentum and rapidity spectra were obtained. The mean multiplicities of $$K^{*}(892)^0$$ K ∗ ( 892 ) 0 mesons were found to be $$(35.1 \pm 1.3 \mathrm {(stat)} \pm 3.6 \mathrm {(sys))} \cdot 10^{-3}$$ ( 35.1 ± 1.3 ( stat ) ± 3.6 ( sys ) ) · 10 - 3 at 40  $$\text{ GeV }\!/\!c$$ GeV / c and $$(58.3 \pm 1.9 \mathrm {(stat)} \pm 4.9 \mathrm {(sys))} \cdot 10^{-3}$$ ( 58.3 ± 1.9 ( stat ) ± 4.9 ( sys ) ) · 10 - 3 at 80  $$\text{ GeV }\!/\!c$$ GeV / c . The NA61/SHINE results are compared with the Epos1.99 and Hadron Resonance Gas models as well as with world data. The transverse mass spectra of $$K^{*}(892)^0$$ K ∗ ( 892 ) 0 mesons and other particles previously reported by NA61/SHINE were fitted within the Blast-Wave model. The transverse flow velocities are close to 0.1–0.2 of the speed of light and are significantly smaller than the ones determined in heavy nucleus-nucleus interactions at the same beam momenta.
ISSN:1434-6052
1434-6044
1434-6052
DOI:10.1140/epjc/s10052-022-10281-5