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.Beleno, C.Berger, M.Bhardwaj, V.Bhuyan, B.Bilka, T.Biswal, J.Bobrov, A.Bonvicini, G.Bozek, A.Bracko, M.Browder, T. E.Cao, L.Cervenkov, 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.Dolezal, Z.Dong, T. V.Drasal, 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.Kodys, P.Korpar, S.Kotchetkov, D.Krizan, 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.Staric, 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.2019-06-182019-06-182019-06-182019-01-2910.1103/PhysRevLett.122.042001https://infoscience.epfl.ch/handle/20.500.14299/158188WOS:000457061400004We report the first observation of the spontaneous polarization of Lambda and (Lambda) over bar hyperons transverse to the production plane in e(+)e(-) annihilation, which is attributed to the effect arising from a polarizing fragmentation function. For inclusive Lambda/(Lambda) over bar production, we also report results with subtracted feed-down contributions from Sigma(0) 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 Lambda/(Lambda) over bar hyperon.Physics, MultidisciplinaryPhysicsfinal-state interactionsspin asymmetrieslambdagaugetext::journal::journal article::research article