$$K^{*}(892)^0$$ meson production in inelastic p+p interactions at 40 and 80 $$\text{ GeV }\!/\!c$$ beam momenta measured by NA61/SHINE at the CERN SPS
Authors: Acharya A. , Adhikary H. , Allison K. K. , Amin N. , Andronov E. V. , Antićić T. , Arsene I. -C. , Baszczyk M. , Battagia D. , Bhosale S. , Blondel A. , Bogomilov M. , Bondar Y. , Bostan N. , Brandin A. , Bravar A. , Bryliński W. , Brzychczyk J. , Buryakov M. , Ćirković M. , Csanad M. , Cybowska J. , Czopowicz T. , Damyanova A. , Davis N. , Dmitriev A. , Dominik W. , Dorosz P. , Dumarchez J. , Engel R. , Feofilov G. A. , Fields L. , Fodor Z. , Friend M. , Garibov A. , Gaździcki M. , Golosov O. , Golovatyuk V. , Golubeva M. , Grebieszkow K. , Guber F. , Haesler A. , Igolkin S. N. , Ilieva S. , Ivashkin A. , Izvestnyy A. , Johnson S. R. , Kadija K. , Kargin N. , Karpushkin N. , Kashirin E. , Kiełbowicz M. , Kireyeu V. A. , Kolesnikov R. , Kolev D. , Korzenev A. , Koshio J. , Kovalenko V. N. , Kowalski S. , Kozłowski B. , Krasnoperov A. , Kucewicz W. , Kuich M. , Kurepin A. , László A. , Lewicki M. , Łojek K. , Lykasov G. , Lyubushkin V. V. , Maćkowiak-Pawłowska M. , Majka Z. , Makhnev A. , Maksiak B. , Malakhov A. I. , Marcinek A. , Marino A. D. , Marton K. , Mathes H. -J. , Matulewicz T. , Matveev V. , Matyja A. , Melkumov G. L. , Merzlaya A. , Merzlaya A. O. , Messerly B. , Mik Ł. , Morozov S. , Nagai Y. , Nakadaira T. , Naskręt M. , Ozvenchuk V. , Panova O. , Paolone V. , Petukhov O. , Pidhurskyi I. , Płaneta R. , Podlaski P. , Popov B. A. , Porfy B. , Posiadała-Zezula M. , Prokhorova D. S. , Pszczel D. , Puławski S. , Puzović J. , Ravonel M. , Renfordt R. , Röhrich D. , Rondio E. , Roth M. , Rumberger B. T. , Rumyantsev M. , Rustamov A. , Rybczynski M. , Rybicki A. , Sadhu S. , Sakashita K. , Schmidt K. , Selyuzhenkov I. , Seryakov A. Yu. , Seyboth P. , Słodkowski M. , Staszel P. , Stefanek G. , Stepaniak J. , Strikhanov M. , Ströbele H. , Šuša T. , Taranenko A. , Tefelska A. , Tefelski D. , Tereshchenko V. , Toia A. , Tsenov R. , Turko L. , Tveter T. S. , Unger M. , Valiev F. F. , Veberič D. , Vechernin V. V. , Volkov V. , Wickremasinghe A. , Wójcik K. , Wyszyński O. , Zaitsev A. , Zimmerman E. D. , Zviagina A. , Zwaska R. ,   NA61/SHINE Collaboration
Published: April 2022

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.