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Measurement of two-particle correlations in hadronic $e^{+}e^{-}$ collisions at Belle

Publication ,  Journal Article
Collaboration, B; Abdesselam, A; Adachi, I; Adamczyk, K; Ahn, JK; Aihara, H; Said, SA; Arinstein, K; Arita, Y; Asner, DM; Atmacan, H; Ayad, R ...
August 10, 2020

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 $e^+e^-$ 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 $e^+e^-$ collisions at $\sqrt{s}=10.52$ GeV is reported. The hadronic $e^+e^-$ 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.

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Publication Date

August 10, 2020
 

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Collaboration, B., Abdesselam, A., Adachi, I., Adamczyk, K., Ahn, J. K., Aihara, H., … Zwahlen, N. (2020). Measurement of two-particle correlations in hadronic $e^{+}e^{-}$ collisions at Belle.
Collaboration, Belle, A. Abdesselam, I. Adachi, K. Adamczyk, J. K. Ahn, H. Aihara, S Al Said, et al. “Measurement of two-particle correlations in hadronic $e^{+}e^{-}$ collisions at Belle,” August 10, 2020.
Collaboration B, Abdesselam A, Adachi I, Adamczyk K, Ahn JK, Aihara H, et al. Measurement of two-particle correlations in hadronic $e^{+}e^{-}$ collisions at Belle. 2020 Aug 10;
Collaboration B, Abdesselam A, Adachi I, Adamczyk K, Ahn JK, Aihara H, Said SA, Arinstein K, Arita Y, Asner DM, Atmacan H, Aulchenko V, Aushev T, Ayad R, Aziz T, Babu V, Bahinipati S, Bakich AM, Ban Y, Barberio E, Barrett M, Bauer M, Behera P, Beleño C, Belous K, Bennett J, Berger M, Bernlochner F, Bessner M, Besson D, Bhardwaj V, Bhuyan B, Bilka T, Biswal J, Bloomfield T, Bobrov A, Bondar A, Bonvicini G, Bozek A, Bračko M, Braun N, Breibeck F, Browder TE, Campajola M, Cao L, Caria G, Červenkov D, Chang M-C, Chang P, Chao Y, Chekelian V, Chen A, Chen K-F, Chen Y, Chen Y-C, Chen Y-T, Cheon BG, Chilikin K, Cho HE, Cho K, Cho S-J, Chobanova V, Choi S-K, Choi Y, Choudhury S, Cinabro D, Crnkovic J, Cunliffe S, Czank T, Dash N, Nardo GD, Dhamija R, Capua FD, Dingfelder J, Doležal Z, Dong TV, Dossett D, Drásal Z, Dubey S, Eidelman S, Epifanov D, Feindt M, Ferber T, Frey A, Frost O, Fulsom BG, Garg R, Gaur V, Gabyshev N, Garmash A, Gelb M, Gemmler J, Getzkow D, Giordano F, Giri A, Goldenzweig P, Golob B, Greenwald D, Perdekamp MG, Grygier J, Grzymkowska O, Guan Y, Guido E, Guo H, Haba J, Hadjivasiliou C, Hamer P, Hara K, Hara T, Hartbrich O, Hasenbusch J, Hayasaka K, Hayashii H, He XH, Heck M, Hedges MT, Heffernan D, Heider M, Heller A, Villanueva MH, Higuchi T, Hirose S, Hoshina K, Hou W-S, Hsiung YB, Hsu C-L, Huang K, Huschle M, Igarashi Y, Iijima T, Imamura M, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Iwata S, Jacobs WW, Jaegle I, Jang E-J, Jeon HB, Jia S, Jin Y, Joffe D, Jones M, Joo CW, Joo KK, Julius T, Kahn J, Kakuno H, Kaliyar AB, Kang JH, Kang KH, Kapusta P, Karyan G, Kataoka SU, Kato Y, Kawai H, Kawasaki T, Keck T, Kichimi H, Kiesling C, Kim BH, Kim CH, Kim DY, Kim HJ, Kim H-J, Kim JB, Kim K-H, Kim KT, Kim SH, Kim SK, Kim YJ, Kim Y-K, Kimmel T, Kindo H, Kinoshita K, Kleinwort C, Klucar J, Kobayashi N, Kodyš P, Koga Y, Komarov I, Konno T, Korpar S, Kotchetkov D, Križan P, Kroeger R, Krohn J-F, Krokovny P, Kronenbitter B, Kuhr T, Kulasiri R, Kumar R, Kumara K, Kumita T, Kurihara E, Kuroki Y, Kuzmin A, Kvasnička P, Kwon Y-J, Lai Y-T, Lalwani K, Lange JS, Lee IS, Lee JK, Lee JY, Lee SC, Lee Y-J, Leitgab M, Leitner R, Levit D, Lewis P, Li CH, Li H, Li J, Li LK, Li Y, Li YB, Gioi LL, Libby J, Lieret K, Limosani A, Lin C-W, Liptak Z, Liu C, Liu Y, Liventsev D, Loos A, Louvot R, Lubej M, Luo T, MacNaughton J, Masuda M, Matsuda T, Matvienko D, McNeil JT, Merola M, Metzner F, Miyabayashi K, Miyachi Y, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Mohanty S, Moon HK, Moon TJ, Mori T, Morii T, Moser H-G, Mrvar M, Müller T, Muramatsu N, Mussa R, Nagasaka Y, Nakahama Y, Nakamura I, Nakamura KR, Nakano E, Nakano T, Nakao M, Nakayama H, Nakazawa H, Nanut T, Nath KJ, Natkaniec Z, Natochii A, Nayak L, Nayak M, Ng C, Niebuhr C, Niiyama M, Nisar NK, Nishida S, Nishimura K, Nitoh O, Ogawa A, Ogawa K, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ono H, Onuki Y, Oskin P, Ostrowicz W, Oswald C, Ozaki H, Pakhlov P, Pakhlova G, Pal B, Pang T, Panzenböck E, Pardi S, Park C-S, Park CW, Park H, Park KS, Park S-H, Patra S, Paul S, Pedlar TK, Peng T, Pesántez L, Pestotnik R, Peters M, Piilonen LE, Podobnik T, Popov V, Prasanth K, Prencipe E, Prim MT, Prothmann K, Purohit MV, Rabusov A, Rauch J, Reisert B, Resmi PK, Ribežl E, Ritter M, Röhrken M, Rorie J, Rostomyan A, Rout N, Rozanska M, Russo G, Sahoo D, Sakai Y, Salehi M, Sandilya S, Santel D, Santelj L, Sanuki T, Sasaki J, Sasao N, Sato Y, Savinov V, Schlüter T, Schneider O, Schnell G, Schram M, Schueler J, Schwanda C, Schwartz AJ, Schwenker B, Seidl R, Seino Y, Semmler D, Senyo K, Seon O, Seong IS, Sevior ME, Shang L, Shapkin M, Shebalin V, Shen CP, Shibata T-A, Shibuya H, Shinomiya S, Shiu J-G, Shwartz B, Sibidanov A, Simon F, Singh JB, Sinha R, Smith K, Sokolov A, Soloviev Y, Solovieva E, Stanič S, Starič M, Steder M, Stottler Z, Strube JF, Stypula J, Sugihara S, Sugiyama A, Sumihama M, Sumisawa K, Sumiyoshi T, Sutcliffe W, Suzuki K, Suzuki S, Suzuki SY, Takeichi H, Takizawa M, Tamponi U, Tanaka M, Tanaka S, Tanida K, Taniguchi N, Tao Y, Taylor GN, Tenchini F, Teramoto Y, Thampi A, Trabelsi K, Tsuboyama T, Uchida M, Ueda I, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Ushiroda Y, Usov Y, Vahsen SE, Hulse CV, Tonder RV, Vanhoefer P, Varner G, Varvell KE, Vervink K, Vinokurova A, Vorobyev V, Vossen A, Wagner MN, Waheed E, Wang B, Wang CH, Wang E, Wang M-Z, Wang P, Wang XL, Watanabe M, Watanabe Y, Watanuki S, Wedd R, Wehle S, Widmann E, Wiechczynski J, Williams KM, Won E, Xu X, Yabsley BD, Yamada S, Yamamoto H, Yamashita Y, Yan W, Yang SB, Yashchenko S, Ye H, Yelton J, Yin JH, Yook Y, Yuan CZ, Yusa Y, Zhang CC, Zhang J, Zhang LM, Zhang ZP, Zhao L, Zhilich V, Zhukova V, Zhulanov V, Zivko T, Zupanc A, Zwahlen N. Measurement of two-particle correlations in hadronic $e^{+}e^{-}$ collisions at Belle. 2020 Aug 10;

Publication Date

August 10, 2020