https://doi.org/10.1140/epjc/s10052-022-10281-5
Regular Article - Experimental Physics
meson production in inelastic p+p interactions at 40 and 80 
beam momenta measured by NA61/SHINE at the CERN SPS
1
National Nuclear Research Center, Baku, Azerbaijan
2
Faculty of Physics, University of Sofia, Sofia, Bulgaria
3
Ruđer Bošković Institute, Zagreb, Croatia
4
LPNHE, University of Paris VI and VII, Paris, France
5
Karlsruhe Institute of Technology, Karlsruhe, Germany
6
University of Frankfurt, Frankfurt, Germany
7
Wigner Research Centre for Physics of the Hungarian Academy of Sciences, Budapest, Hungary
8
Eötvös Loránd University, Budapest, Hungary
9
Institute for Particle and Nuclear Studies, Tsukuba, Japan
10
Okayama University, Okayama, Japan
11
University of Bergen, Bergen, Norway
12
University of Oslo, Oslo, Norway
13
Jan Kochanowski University in Kielce, Kielce, Poland
14
Institute of Nuclear Physics, Polish Academy of Sciences, Kraków, Poland
15
National Centre for Nuclear Research, Warsaw, Poland
16
Jagiellonian University, Kraków, Poland
17
AGH-University of Science and Technology, Kraków, Poland
18
University of Silesia, Katowice, Poland
19
University of Warsaw, Warsaw, Poland
20
University of Wrocław, Wrocław, Poland
21
Warsaw University of Technology, Warsaw, Poland
22
Institute for Nuclear Research, Moscow, Russia
23
Joint Institute for Nuclear Research, Dubna, Russia
24
National Research Nuclear University (Moscow Engineering Physics Institute), Moscow, Russia
25
St. Petersburg State University, St. Petersburg, Russia
26
University of Belgrade, Belgrade, Serbia
27
University of Geneva, Geneva, Switzerland
28
Fermilab, Batavia, USA
29
University of Notre Dame, Notre Dame, USA
30
University of Colorado, Boulder, USA
31
University of Pittsburgh, Pittsburgh, USA
Received:
22
December
2021
Accepted:
29
March
2022
Published online:
13
April
2022
Measurements of resonance production via its 
decay mode in inelastic p+p collisions at beam momenta 40 and 80 (
and 12.3 
) 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 signal. Transverse momentum and rapidity spectra were obtained. The mean multiplicities of mesons were found to be 
at 40 and 
at 80 . 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 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.
© The Author(s) 2022
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