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Andronov, E V; Antićić, T; Babkin, V; Baszczyk, M; Bhosale, S; Blondel, A; Brandin, A; Bravar, A; Brzychczyk, J; Buryakov, M; Busygina, O; Bzdak, A; Cherif, H; Cybowska, J; Davis, N; Deliyergiyev, M; Dmitriev, A; Dominik, W; Dumarchez, J; Engel, R; Fields, L; Golosov, O; Golovatyuk, V; Golubeva, M; Grebieszkow, K; Haesler, A; Ilieva, S; Ivashkin, A; Kadija, K; Kaptur, E; Kargin, N; Kashirin, E; Kireyeu, V A; Klochkov, V; Kolesnikov, V I; Kolev, D; Korzenev, A; Kovalenko, V N; Kowalski, S; Koziel, M; Krasnoperov, A; Kucewicz, W; Kuich, M; Kurepin, A; László, A; Lazareva, T V; Łojek, K; Łysakowski, B; Lyubushkin, V V; Malakhov, A I; Manić, D; Marchionni, A; Marcinek, A; Marton, K; Melkumov, G L; Merzlaya, A O; Messerly, B; Mrówczyński, S; Nagai, Y; Naskręt, M; Ozvenchuk, V; Pavin, M; Petukhov, O; Płaneta, R; Podlaski, P; Popov, B A; Prokhorova, D S; Pszczel, D; Puławski, S; Puzović, J; Ravonel, M; Renfordt, R; Richter-Wąs, E; Rumberger, B T; Rybicki, A; Sadovsky, A; Schmidt, K; Selyuzhenkov, I; Seyboth, P; Słodkowski, M; Staszel, P; Stefanek, G; Stepaniak, J; Strikhanov, M; Tefelska, A; Tefelski, D; Tereshchenko, V; Toia, A; Tsenov, R; Turko, L; Ulrich, R; Unger, M; Valiev, F F; Veberič, D; Vechernin, V V; Wickremasinghe, A; Wojtaszek-Szwarc, A; Zambelli, L; Zimmerman, E D; Zwaska, R
The European physical journal. C, Particles and fields, 03/2020, Volume: 80, Issue: 3Journal Article
Results on ϕ meson production in inelastic p+p collisions at CERN SPS energies are presented. They are derived from data collected by the NA61/SHINE fixed target experiment, by means of invariant mass spectra fits in the ϕ→K+K- decay channel. They include the first ever measured double differential spectra of ϕ mesons as a function of rapidity y and transverse momentum pT for proton beam momenta of 80GeV/c and 158GeV/c, as well as single differential spectra of y or pT for beam momentum of 40GeV/c. The corresponding total ϕ yields per inelastic p+p event are obtained. These results are compared with existing data on ϕ meson production in p+p collisions. The comparison shows consistency but superior accuracy of the present measurements. The emission of ϕ mesons in p+p reactions is confronted with that occurring in Pb+Pb collisions, and the experimental results are compared with model predictions. It appears that none of the considered models can properly describe all the experimental observations.
