Journal of High Energy Physics (Mar 2023)

Two-particle angular correlations in e + e − collisions to hadronic final states in two reference coordinates at Belle

  • The Belle collaboration,
  • Y.-C. Chen,
  • Y.-J. Lee,
  • P. Chang,
  • I. Adachi,
  • H. Aihara,
  • S. Al Said,
  • D. M. Asner,
  • H. Atmacan,
  • V. Aulchenko,
  • T. Aushev,
  • R. Ayad,
  • V. Babu,
  • P. Behera,
  • K. Belous,
  • J. Bennett,
  • M. Bessner,
  • V. Bhardwaj,
  • B. Bhuyan,
  • T. Bilka,
  • D. Bodrov,
  • G. Bonvicini,
  • J. Borah,
  • A. Bozek,
  • M. Bračko,
  • P. Branchini,
  • A. Budano,
  • M. Campajola,
  • D. Červenkov,
  • M.-C. Chang,
  • V. Chekelian,
  • B. G. Cheon,
  • K. Chilikin,
  • H. E. Cho,
  • K. Cho,
  • S.-J. Cho,
  • S.-K. Choi,
  • Y. Choi,
  • S. Choudhury,
  • D. Cinabro,
  • S. Das,
  • G. De Pietro,
  • R. Dhamija,
  • F. Di Capua,
  • J. Dingfelder,
  • Z. Doležal,
  • T. V. Dong,
  • D. Epifanov,
  • T. Ferber,
  • D. Ferlewicz,
  • B. G. Fulsom,
  • R. Garg,
  • V. Gaur,
  • N. Gabyshev,
  • A. Garmash,
  • A. Giri,
  • P. Goldenzweig,
  • E. Graziani,
  • T. Gu,
  • C. Hadjivasiliou,
  • K. Hayasaka,
  • H. Hayashii,
  • M. T. Hedges,
  • D. Herrmann,
  • W.-S. Hou,
  • C.-L. Hsu,
  • K. Inami,
  • N. Ipsita,
  • A. Ishikawa,
  • R. Itoh,
  • M. Iwasaki,
  • W. W. Jacobs,
  • E.-J. Jang,
  • S. Jia,
  • Y. Jin,
  • K. K. Joo,
  • K. H. Kang,
  • G. Karyan,
  • T. Kawasaki,
  • C. Kiesling,
  • C. H. Kim,
  • D. Y. Kim,
  • K.-H. Kim,
  • Y.-K. Kim,
  • P. Kodyš,
  • A. Korobov,
  • S. Korpar,
  • E. Kovalenko,
  • P. Križan,
  • P. Krokovny,
  • M. Kumar,
  • R. Kumar,
  • K. Kumara,
  • Y.-J. Kwon,
  • T. Lam,
  • J. S. Lange,
  • S. C. Lee,
  • J. Li,
  • L. K. Li,
  • Y. Li,
  • Y. B. Li,
  • L. Li Gioi,
  • J. Libby,
  • C.-W. Lin,
  • K. Lieret,
  • D. Liventsev,
  • M. Masuda,
  • T. Matsuda,
  • S. K. Maurya,
  • F. Meier,
  • M. Merola,
  • K. Miyabayashi,
  • R. Mizuk,
  • G. B. Mohanty,
  • M. Mrvar,
  • R. Mussa,
  • M. Nakao,
  • Z. Natkaniec,
  • A. Natochii,
  • M. Nayak,
  • N. K. Nisar,
  • S. Nishida,
  • S. Ogawa,
  • H. Ono,
  • Y. Onuki,
  • P. Oskin,
  • G. Pakhlova,
  • S. Pardi,
  • H. Park,
  • S.-H. Park,
  • S. Patra,
  • S. Paul,
  • T. K. Pedlar,
  • R. Pestotnik,
  • L. E. Piilonen,
  • T. Podobnik,
  • E. Prencipe,
  • M. T. Prim,
  • N. Rout,
  • G. Russo,
  • S. Sandilya,
  • A. Sangal,
  • L. Santelj,
  • V. Savinov,
  • G. Schnell,
  • C. Schwanda,
  • R. Seidl,
  • Y. Seino,
  • K. Senyo,
  • M. E. Sevior,
  • M. Shapkin,
  • C. Sharma,
  • C. P. Shen,
  • J.-G. Shiu,
  • E. Solovieva,
  • M. Starič,
  • Z. S. Stottler,
  • J. F. Strube,
  • M. Sumihama,
  • T. Sumiyoshi,
  • M. Takizawa,
  • U. Tamponi,
  • K. Tanida,
  • F. Tenchini,
  • K. Trabelsi,
  • M. Uchida,
  • T. Uglov,
  • Y. Unno,
  • K. Uno,
  • S. Uno,
  • P. Urquijo,
  • R. van Tonder,
  • G. Varner,
  • A. Vinokurova,
  • A. Vossen,
  • E. Waheed,
  • E. Wang,
  • M.-Z. Wang,
  • X. L. Wang,
  • M. Watanabe,
  • S. Watanuki,
  • E. Won,
  • W. Yan,
  • S. B. Yang,
  • J. H. Yin,
  • C. Z. Yuan,
  • Y. Yusa,
  • Y. Zhai,
  • Z. P. Zhang,
  • V. Zhilich,
  • V. Zhukova

DOI
https://doi.org/10.1007/JHEP03(2023)171
Journal volume & issue
Vol. 2023, no. 3
pp. 1 – 33

Abstract

Read online

Abstract We present the analysis of two-particle angular correlations using coordinate systems defined with the conventional beam axis and the event thrust axis. We propose the latter as a good representation for the correlation structure interpretation in the e + e − collision system. The e + e − collisions to hadronic final states at center-of-mass energies of s $$ \sqrt{s} $$ = 10.52 GeV and 10.58 GeV are recorded by the Belle detector at KEKB. In this paper, results on the first dataset are supplementary to the previous Belle publication [1]. At the same time, the latter is the first two-particle correlation measurement at collision energy on the Υ(4S) resonance and is sensitive to its decay products. Measurements are reported as a function of the charged-particle multiplicity. Finally, a qualitative understanding of the correlation structure is discussed using a combination of Monte Carlo simulations and experimental data.

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