European Physical Journal C: Particles and Fields (Mar 2020)

Measurement of $$\phi $$ ϕ meson production in $$p + p$$ p+p interactions at 40, 80 and $$158 \, \hbox {GeV}/c$$ 158GeV/c with the NA61/SHINE spectrometer at the CERN SPS

  • A. Aduszkiewicz,
  • 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,
  • E. Kaptur,
  • N. Kargin,
  • E. Kashirin,
  • M. Kiełbowicz,
  • V. A. Kireyeu,
  • V. Klochkov,
  • V. I. Kolesnikov,
  • D. Kolev,
  • A. Korzenev,
  • V. N. Kovalenko,
  • K. Kowalik,
  • S. Kowalski,
  • M. Koziel,
  • A. Krasnoperov,
  • W. Kucewicz,
  • M. Kuich,
  • A. Kurepin,
  • D. Larsen,
  • A. László,
  • T. V. Lazareva,
  • M. Lewicki,
  • K. Łojek,
  • B. Łysakowski,
  • V. V. Lyubushkin,
  • M. Maćkowiak-Pawłowska,
  • Z. Majka,
  • B. Maksiak,
  • A. I. Malakhov,
  • D. Manić,
  • A. Marchionni,
  • 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,
  • M. Pavin,
  • O. Petukhov,
  • R. Płaneta,
  • P. Podlaski,
  • B. A. Popov,
  • B. Porfy,
  • M. Posiadała-Zezula,
  • D. S. Prokhorova,
  • D. Pszczel,
  • S. Puławski,
  • J. Puzović,
  • M. Ravonel,
  • R. Renfordt,
  • E. Richter-Wąs,
  • D. Röhrich,
  • E. Rondio,
  • M. Roth,
  • B. T. Rumberger,
  • M. Rumyantsev,
  • A. Rustamov,
  • M. Rybczynski,
  • A. Rybicki,
  • A. Sadovsky,
  • K. Schmidt,
  • I. Selyuzhenkov,
  • A. Yu. Seryakov,
  • P. Seyboth,
  • M. Słodkowski,
  • P. Staszel,
  • G. Stefanek,
  • J. Stepaniak,
  • M. Strikhanov,
  • H. Ströbele,
  • T. Šuša,
  • A. Taranenko,
  • A. Tefelska,
  • D. Tefelski,
  • V. Tereshchenko,
  • A. Toia,
  • R. Tsenov,
  • L. Turko,
  • R. Ulrich,
  • M. Unger,
  • F. F. Valiev,
  • D. Veberič,
  • V. V. Vechernin,
  • A. Wickremasinghe,
  • Z. Włodarczyk,
  • A. Wojtaszek-Szwarc,
  • O. Wyszyński,
  • L. Zambelli,
  • E. D. Zimmerman,
  • R. Zwaska

DOI
https://doi.org/10.1140/epjc/s10052-020-7675-6
Journal volume & issue
Vol. 80, no. 3
pp. 1 – 18

Abstract

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Abstract Results on $$\phi $$ ϕ meson production in inelastic $$p + p$$ 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 $$\phi \rightarrow K^+ K^- $$ ϕ→K+K- decay channel. They include the first ever measured double differential spectra of $$\phi $$ ϕ mesons as a function of rapidity $$y$$ y and transverse momentum $$p_{\text {T}}$$ pT for proton beam momenta of $$80 \, \hbox {GeV}/c$$ 80GeV/c and $$158 \, \hbox {GeV}/c$$ 158GeV/c , as well as single differential spectra of $$y$$ y or $$p_{\text {T}}$$ pT for beam momentum of $$40 \, \hbox {GeV}/c$$ 40GeV/c . The corresponding total $$\phi $$ ϕ yields per inelastic $$p + p$$ p+p event are obtained. These results are compared with existing data on $$\phi $$ ϕ meson production in $$p + p$$ p+p collisions. The comparison shows consistency but superior accuracy of the present measurements. The emission of $$\phi $$ ϕ mesons in $$p + p$$ p+p reactions is confronted with that occurring in $$\mathrm{Pb} + \mathrm{Pb}$$ 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.