Measurements of $${\Xi \left( 1530\right) ^{0}} $$ and $${\overline{\Xi }\left( 1530\right) ^{0}} $$ production in proton–proton interactions at $$\sqrt{s_{NN}}$$ = 17.3 $$\text{ GeV }$$ in the NA61/SHINE experiment
Authors: Acharya A. , Adhikary H. , Allison K. K. , Amin N. , Andronov E. V. , Antićić T. , Babkin V. , Balkova Y. , Baszczyk M. , Bhosale S. , Blondel A. , Bogomilov M. , Brandin A. , Bravar A. , Bryliński W. , Brzychczyk J. , Buryakov M. , Busygina O. , Bzdak A. , Cherif H. , Ćirković M. , Csanad M. , Cybowska J. , Czopowicz T. , Damyanova A. , Davis N. , Deliyergiyev M. , Deveaux M. , Dmitriev A. , Dominik W. , Dorosz P. , Dumarchez J. , Engel R. , Feofilov G. A. , Fields L. , Fodor Z. , Garibov A. , Gaździcki M. , Golosov O. , Golovatyuk V. , Golubeva M. , Grebieszkow K. , Guber F. , Haesler A. , Igolkin S. N. , Ilieva S. , Ivashkin A. , Johnson S. R. , Kadija K. , Kargin N. , Kashirin E. , Kiełbowicz M. , Kireyeu V. A. , Klochkov V. , Kolesnikov V. I. , Kolev D. , Korzenev A. , Kovalenko V. N. , Kowalski S. , Kozłowski B. , Krasnoperov A. , Kucewicz W. , Kuich M. , Kurepin A. , Larsen D. , László A. , Lazareva T. V. , Lewicki M. , Łojek K. , Lyubushkin V. V. , Maćkowiak-Pawłowska M. , Majka Z. , Maksiak B. , Malakhov A. I. , Marcinek A. , Marino A. D. , Marton K. , Mathes H.-J. , Matulewicz T. , Matveev V. , Melkumov G. L. , Merzlaya A. O. , Messerly B. , Mik Ł. , Morozov S. , Nagai Y. , Naskręt M. , Ozvenchuk V. , 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. , Sadovsky A. , 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. , Ulrich R. , Unger M. , Urbaniak M. , Uzhva D. , Valiev F. F. , Veberič D. , Vechernin V. V. , Wickremasinghe A. , Wójcik K. , Wyszyński O. , Zaitsev A. , Zimmerman E. D. , Zwaska R. ,   NA61/SHINE Collaboration
Published: October 2021

Double-differential yields of $${\Xi \left( 1530\right) ^{0}} $$

Ξ

1530

0

and $${\overline{\Xi }\left( 1530\right) ^{0}} $$

Ξ
¯

1530

0

resonances produced in p+p interactions were measured at a laboratory beam momentum of 158 $$\text{ GeV }\!/\!c$$

GeV

/

c

. This measurement is the first of its kind in p+p interactions below LHC energies. It was performed at the CERN SPS by the NA61/SHINE collaboration. Double-differential distributions in rapidity and transverse momentum were obtained from a sample of $$26\times 10^6$$

26
×

10
6

inelastic events. The spectra are extrapolated to full phase space resulting in mean multiplicity of $${\Xi \left( 1530\right) ^{0}} $$

Ξ

1530

0

($$6.73 \pm 0.25\pm 0.67)\times 10^{-4}$$

6.73
±
0.25
±
0.67
)
×

10

-
4

and $${\overline{\Xi }\left( 1530\right) ^{0}} $$

Ξ
¯

1530

0

($$2.71 \pm 0.18\pm 0.18)\times 10^{-4}$$

2.71
±
0.18
±
0.18
)
×

10

-
4

. The rapidity and transverse momentum spectra and mean multiplicities were compared to predictions of string-hadronic and statistical model calculations.