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Observation of Transverse Λ / Λ Hyperon Polarization in e+e- Annihilation at BelleObservation of Transverse Lambda/(Lambda)over-bar Hyperon Polarization in e(+)e(-) Annihilation at Belle
- Other Titles
- Observation of Transverse Lambda/(Lambda)over-bar Hyperon Polarization in e(+)e(-) Annihilation at Belle
- Authors
- Guan, Y.; Vossen, A.; Adachi, I.; Adamczyk, K.; Ahn, J.K.; Aihara, H.; Al Said, S.; Asner, D.M.; Atmacan, H.; Aulchenko, V.; Aushev, T.; Ayad, R.; Babu, V.; Badhrees, I.; Bakich, A.M.; Bansal, V.; Behera, P.; Beleño, C.; Berger, M.; Bhardwaj, V.; Bhuyan, B.; Bilka, T.; Biswal, J.; Bobrov, A.; Bonvicini, G.; Bozek, A.; Bračko, M.; Browder, T.E.; Cao, L.; Červenkov, D.; Chang, P.; Chekelian, V.; Chen, A.; Cheon, B.G.; Chilikin, K.; Cho, K.; Choi, S.-K.; Choi, Y.; Cinabro, D.; Cunliffe, S.; Dash, N.; Di Carlo, S.; Dingfelder, J.; DoleŽal, Z.; Dong, T.V.; Drásal, Z.; Eidelman, S.; Epifanov, D.; Fast, J.E.; Ferber, T.; Fulsom, B.G.; Garg, R.; Gaur, V.; Gabyshev, N.; Garmash, A.; Gelb, M.; Giri, A.; Goldenzweig, P.; Golob, B.; Guido, E.; Haba, J.; Hayasaka, K.; Hayashii, H.; Hirose, S.; Hou, W.-S.; Iijima, T.; Inami, K.; Inguglia, G.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Jacobs, W.W.; Jaegle, I.; Jeon, H.B.; Jia, S.; Jin, Y.; Joffe, D.; Joo, K.K.; Julius, T.; Kang, K.H.; Kawasaki, T.; Kiesling, C.; Kim, D.Y.; Kim, H.J.; Kim, J.B.; Kim, K.T.; Kim, S.H.; Kinoshita, K.; Kodyš, P.; Korpar, S.; Kotchetkov, D.; KriŽan, P.; Kroeger, R.; Krokovny, P.; Kuhr, T.; Kulasiri, R.; Kuzmin, A.; Kwon, Y.-J.; Lange, J.S.; Lee, I.S.; Lee, S.C.; Li, L.K.; Li, Y.B.; Li Gioi, L.; Libby, J.; Liventsev, D.; Lubej, M.; Luo, T.; Masuda, M.; Matsuda, T.; Matvienko, D.; Merola, M.; Miyata, H.; Mizuk, R.; Mohanty, G.B.; Moon, H.K.; Mori, T.; Mussa, R.; Nakao, M.; Nanut, T.; Nath, K.J.; Natkaniec, Z.; Nayak, M.; Niiyama, M.; Nisar, N.K.; Nishida, S.; Ogawa, S.; Okuno, S.; Ono, H.; Pakhlov, P.; Pakhlova, G.; Pal, B.; Pardi, S.; Park, H.; Paul, S.; Pedlar, T.K.; Pestotnik, R.; Piilonen, L.E.; Popov, V.; Prencipe, E.; Rabusov, A.; Rostomyan, A.; Russo, G.; Sahoo, D.; Sakai, Y.; Salehi, M.; Sandilya, S.; Santelj, L.; Sanuki, T.; Savinov, V.; Schneider, O.; Schnell, G.; Schwanda, C.; Seidl, R.; Seino, Y.; Senyo, K.; Seon, O.; Sevior, M.E.; Shebalin, V.; Shen, C.P.; Shibata, T.-A.; Shiu, J.-G.; Simon, F.; Sokolov, A.; Solovieva, E.; Starič, M.; Strube, J.F.; Sumihama, M.; Sumiyoshi, T.; Sutcliffe, W.; Suzuki, K.; Takizawa, M.; Tamponi, U.; Tanida, K.; Tenchini, F.; Uchida, M.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Usov, Y.; Vahsen, S.E.; Van Hulse, C.; Van Tonder, R.; Varner, G.; Vinokurova, A.; Vorobyev, V.; Waheed, E.; Wang, B.; Wang, C.H.; Wang, M.-Z.; Wang, P.; Wang, X.L.; Watanuki, S.; Widmann, E.; Won, E.; Ye, H.; Yelton, J.; Yin, J.H.; Yuan, C.Z.; Yusa, Y.; Zhang, Z.P.; Zhilich, V.; Zhukova, V.; Zhulanov, V.; Zupanc, A.
- Issue Date
- Jan-2019
- Publisher
- American Physical Society
- Citation
- Physical Review Letters, v.122, no.4
- Journal Title
- Physical Review Letters
- Volume
- 122
- Number
- 4
- ISSN
- 0031-9007
- Abstract
- We report the first observation of the spontaneous polarization of Λ and Λ hyperons transverse to the production plane in e+e- annihilation, which is attributed to the effect arising from a polarizing fragmentation function. For inclusive Λ/Λ production, we also report results with subtracted feed-down contributions from Σ0 and charm. This measurement uses a dataset of 800.4 fb-1 collected by the Belle experiment at or near a center-of-mass energy of 10.58 GeV. We observe a significant polarization that rises with the fractional energy carried by the Λ/Λ hyperon. © 2019 authors.
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Related Researcher
- Kim, D. Y.
- College of Natural Sciences (Department of Physics)