Measurement of two-particle correlations in hadronic $e^{+}e^{-}$ collisions at Belle
High Energy Physics - Experiment
2020-08-11 v1
Abstract
The enhancement of charged-particle pairs with large pseudorapidity difference and small azimuthal angle difference, often referred to as the ``ridge signal'', is a phenomenon widely observed in high multiplicity proton-proton, proton-ion and deutron-ion collisions, which is not yet fully understood. In heavy-ion collisions, the hydrodynamic expansion of the Quark-Gluon Plasma is one of the possible explanations of the origin of the ridge signal. Measurements in the collision system, without the complexities introduced by hadron structure in the initial state, can serve as a complementary probe to examine the formation of a ridge signal. The first measurement of two-particle angular correlation functions in high multiplicity collisions at GeV is reported. The hadronic annihilation data collected by the Belle detector at KEKB are used in this study. Two-particle angular correlation functions are measured over the full azimuth and large pseudorapidity intervals which are defined by either the electron beam axis or the event thrust as a function of charged particle multiplicity. The measurement in the event thrust analysis, with mostly outgoing quark pairs determining the reference axis, is sensitive to the region of additional soft gluon emissions. No significant ridge signal is observed with either coordinates analyses. Near side jet correlations appear to be absent in the thrust axis analysis. The measurements are compared to predictions from various event generators and expected to provide new constraints to the phenomenological models in the low energy regime.
Keywords
Cite
@article{arxiv.2008.04187,
title = {Measurement of two-particle correlations in hadronic $e^{+}e^{-}$ collisions at Belle},
author = {Belle Collaboration and A. Abdesselam and I. Adachi and K. Adamczyk and J. K. Ahn and H. Aihara and S. Al Said and K. Arinstein and Y. Arita and D. M. Asner and H. Atmacan and V. Aulchenko and T. Aushev and R. Ayad and T. Aziz and V. Babu and S. Bahinipati and A. M. Bakich and Y. Ban and E. Barberio and M. Barrett and M. Bauer and P. Behera and C. Beleño and K. Belous and J. Bennett and M. Berger and F. Bernlochner and M. Bessner and D. Besson and V. Bhardwaj and B. Bhuyan and T. Bilka and J. Biswal and T. Bloomfield and A. Bobrov and A. Bondar and G. Bonvicini and A. Bozek and M. Bračko and N. Braun and F. Breibeck and T. E. Browder and M. Campajola and L. Cao and G. Caria and D. Červenkov and M. -C. Chang and P. Chang and Y. Chao and V. Chekelian and A. Chen and K. -F. Chen and Y. Chen and Y. -C. Chen and Y. -T. Chen and B. G. Cheon and K. Chilikin and H. E. Cho and K. Cho and S. -J. Cho and V. Chobanova and S. -K. Choi and Y. Choi and S. Choudhury and D. Cinabro and J. Crnkovic and S. Cunliffe and T. Czank and N. Dash and G. De Nardo and R. Dhamija and F. Di Capua and J. Dingfelder and Z. Doležal and T. V. Dong and D. Dossett and Z. Drásal and S. Dubey and S. Eidelman and D. Epifanov and M. Feindt and T. Ferber and A. Frey and O. Frost and B. G. Fulsom and R. Garg and V. Gaur and N. Gabyshev and A. Garmash and M. Gelb and J. Gemmler and D. Getzkow and F. Giordano and A. Giri and P. Goldenzweig and B. Golob and D. Greenwald and M. Grosse Perdekamp and J. Grygier and O. Grzymkowska and Y. Guan and E. Guido and H. Guo and J. Haba and C. Hadjivasiliou and P. Hamer and K. Hara and T. Hara and O. Hartbrich and J. Hasenbusch and K. Hayasaka and H. Hayashii and X. H. He and M. Heck and M. T. Hedges and D. Heffernan and M. Heider and A. Heller and M. Hernandez Villanueva and T. Higuchi and S. Hirose and K. Hoshina and W. -S. Hou and Y. B. Hsiung and C. -L. Hsu and K. Huang and M. Huschle and Y. Igarashi and T. Iijima and M. Imamura and K. Inami and G. Inguglia and A. Ishikawa and R. Itoh and M. Iwasaki and Y. Iwasaki and S. Iwata and W. W. Jacobs and I. Jaegle and E. -J. Jang and H. B. Jeon and S. Jia and Y. Jin and D. Joffe and M. Jones and C. W. Joo and K. K. Joo and T. Julius and J. Kahn and H. Kakuno and A. B. Kaliyar and J. H. Kang and K. H. Kang and P. Kapusta and G. Karyan and S. U. Kataoka and Y. Kato and H. Kawai and T. Kawasaki and T. Keck and H. Kichimi and C. Kiesling and B. H. Kim and C. H. Kim and D. Y. Kim and H. J. Kim and H. -J. Kim and J. B. Kim and K. -H. Kim and K. T. Kim and S. H. Kim and S. K. Kim and Y. J. Kim and Y. -K. Kim and T. Kimmel and H. Kindo and K. Kinoshita and C. Kleinwort and J. Klucar and N. Kobayashi and P. Kodyš and Y. Koga and I. Komarov and T. Konno and S. Korpar and D. Kotchetkov and P. Križan and R. Kroeger and J. -F. Krohn and P. Krokovny and B. Kronenbitter and T. Kuhr and R. Kulasiri and R. Kumar and K. Kumara and T. Kumita and E. Kurihara and Y. Kuroki and A. Kuzmin and P. Kvasnička and Y. -J. Kwon and Y. -T. Lai and K. Lalwani and J. S. Lange and I. S. Lee and J. K. Lee and J. Y. Lee and S. C. Lee and Y. -J. Lee and M. Leitgab and R. Leitner and D. Levit and P. Lewis and C. H. Li and H. Li and J. Li and L. K. Li and Y. Li and Y. B. Li and L. Li Gioi and J. Libby and K. Lieret and A. Limosani and C. -W. Lin and Z. Liptak and C. Liu and Y. Liu and D. Liventsev and A. Loos and R. Louvot and M. Lubej and T. Luo and J. MacNaughton and M. Masuda and T. Matsuda and D. Matvienko and J. T. McNeil and M. Merola and F. Metzner and K. Miyabayashi and Y. Miyachi and H. Miyake and H. Miyata and Y. Miyazaki and R. Mizuk and G. B. Mohanty and S. Mohanty and H. K. Moon and T. J. Moon and T. Mori and T. Morii and H. -G. Moser and M. Mrvar and T. Müller and N. Muramatsu and R. Mussa and Y. Nagasaka and Y. Nakahama and I. Nakamura and K. R. Nakamura and E. Nakano and T. Nakano and M. Nakao and H. Nakayama and H. Nakazawa and T. Nanut and K. J. Nath and Z. Natkaniec and A. Natochii and L. Nayak and M. Nayak and C. Ng and C. Niebuhr and M. Niiyama and N. K. Nisar and S. Nishida and K. Nishimura and O. Nitoh and A. Ogawa and K. Ogawa and S. Ogawa and T. Ohshima and S. Okuno and S. L. Olsen and H. Ono and Y. Onuki and P. Oskin and W. Ostrowicz and C. Oswald and H. Ozaki and P. Pakhlov and G. Pakhlova and B. Pal and T. Pang and E. Panzenböck and S. Pardi and C. -S. Park and C. W. Park and H. Park and K. S. Park and S. -H. Park and S. Patra and S. Paul and T. K. Pedlar and T. Peng and L. Pesántez and R. Pestotnik and M. Peters and L. E. Piilonen and T. Podobnik and V. Popov and K. Prasanth and E. Prencipe and M. T. Prim and K. Prothmann and M. V. Purohit and A. Rabusov and J. Rauch and B. Reisert and P. K. Resmi and E. Ribežl and M. Ritter and M. Röhrken and J. Rorie and A. Rostomyan and N. Rout and M. Rozanska and G. Russo and D. Sahoo and Y. Sakai and M. Salehi and S. Sandilya and D. Santel and L. Santelj and T. Sanuki and J. Sasaki and N. Sasao and Y. Sato and V. Savinov and T. Schlüter and O. Schneider and G. Schnell and M. Schram and J. Schueler and C. Schwanda and A. J. Schwartz and B. Schwenker and R. Seidl and Y. Seino and D. Semmler and K. Senyo and O. Seon and I. S. Seong and M. E. Sevior and L. Shang and M. Shapkin and V. Shebalin and C. P. Shen and T. -A. Shibata and H. Shibuya and S. Shinomiya and J. -G. Shiu and B. Shwartz and A. Sibidanov and F. Simon and J. B. Singh and R. Sinha and K. Smith and A. Sokolov and Y. Soloviev and E. Solovieva and S. Stanič and M. Starič and M. Steder and Z. Stottler and J. F. Strube and J. Stypula and S. Sugihara and A. Sugiyama and M. Sumihama and K. Sumisawa and T. Sumiyoshi and W. Sutcliffe and K. Suzuki and K. Suzuki and S. Suzuki and S. Y. Suzuki and H. Takeichi and M. Takizawa and U. Tamponi and M. Tanaka and S. Tanaka and K. Tanida and N. Taniguchi and Y. Tao and G. N. Taylor and F. Tenchini and Y. Teramoto and A. Thampi and K. Trabelsi and T. Tsuboyama and M. Uchida and I. Ueda and S. Uehara and T. Uglov and Y. Unno and S. Uno and P. Urquijo and Y. Ushiroda and Y. Usov and S. E. Vahsen and C. Van Hulse and R. Van Tonder and P. Vanhoefer and G. Varner and K. E. Varvell and K. Vervink and A. Vinokurova and V. Vorobyev and A. Vossen and M. N. Wagner and E. Waheed and B. Wang and C. H. Wang and E. Wang and M. -Z. Wang and P. Wang and X. L. Wang and M. Watanabe and Y. Watanabe and S. Watanuki and R. Wedd and S. Wehle and E. Widmann and J. Wiechczynski and K. M. Williams and E. Won and X. Xu and B. D. Yabsley and S. Yamada and H. Yamamoto and Y. Yamashita and W. Yan and S. B. Yang and S. Yashchenko and H. Ye and J. Yelton and J. H. Yin and Y. Yook and C. Z. Yuan and Y. Yusa and C. C. Zhang and J. Zhang and L. M. Zhang and Z. P. Zhang and L. Zhao and V. Zhilich and V. Zhukova and V. Zhulanov and T. Zivko and A. Zupanc and N. Zwahlen},
journal= {arXiv preprint arXiv:2008.04187},
year = {2020}
}
Comments
13 pages, 5 figures. Conference paper for ICHEP 2020