Observation of Transverse $\Lambda/\bar{\Lambda}$ Hyperon Polarization in $e^+e^-$ Annihilation at Belle
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...
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| Veröffentlicht in: | Physical review letters 2019, Vol.122 (4) |
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| creator | 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. |
| description | 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. |
| doi_str_mv | 10.1103/PhysRevLett.122.042001 |
| format | Article |
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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.</description><identifier>ISSN: 0031-9007</identifier><identifier>EISSN: 1079-7114</identifier><identifier>DOI: 10.1103/PhysRevLett.122.042001</identifier><language>eng</language><publisher>American Physical Society</publisher><subject>High Energy Physics - Experiment ; Physics</subject><ispartof>Physical review letters, 2019, Vol.122 (4)</ispartof><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><orcidid>0000-0001-5790-3129 ; 0000-0001-5790-3129</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,4010,27900,27901,27902</link.rule.ids><backlink>$$Uhttps://hal.science/hal-01863145$$DView record in 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G.</creatorcontrib><creatorcontrib>Ishikawa, A.</creatorcontrib><creatorcontrib>Itoh, R.</creatorcontrib><creatorcontrib>Iwasaki, M.</creatorcontrib><creatorcontrib>Iwasaki, Y.</creatorcontrib><creatorcontrib>Jacobs, W.W.</creatorcontrib><creatorcontrib>Jaegle, I.</creatorcontrib><creatorcontrib>Jeon, H.B.</creatorcontrib><creatorcontrib>Jia, S.</creatorcontrib><creatorcontrib>Jin, Y.</creatorcontrib><creatorcontrib>Joffe, D.</creatorcontrib><creatorcontrib>Joo, K.K.</creatorcontrib><creatorcontrib>Julius, T.</creatorcontrib><creatorcontrib>Kang, K.H.</creatorcontrib><creatorcontrib>Kawasaki, T.</creatorcontrib><creatorcontrib>Kiesling, C.</creatorcontrib><creatorcontrib>Kim, D.Y.</creatorcontrib><creatorcontrib>Kim, H.J.</creatorcontrib><creatorcontrib>Kim, J.B.</creatorcontrib><creatorcontrib>Kim, K.T.</creatorcontrib><creatorcontrib>Kim, S.H.</creatorcontrib><creatorcontrib>Kinoshita, K.</creatorcontrib><creatorcontrib>Kodyš, P.</creatorcontrib><creatorcontrib>Korpar, 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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.</description><subject>High Energy Physics - Experiment</subject><subject>Physics</subject><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNqVi81qwkAUhQdRMP68QplFNqUk3pukRpe2tGQRUMSlGG7olUwZJzITAmnpu9diXqCrwznfd4R4QAgRIV7sqs7tuc25aUKMohCSCAAHwkNI10GKmAyFBxBjsAZIx2Li3CfcjGi58kS1LR3blhpVG1mf5cGScS1bx9I_5nQpP2hxLMl-9-XHl1l3ZXuzd7Umq77uV2Wkz6cnPgW-3BijKqXvgBr5wlrzTIzOpB3P-5yKx_e3w2sWVKSLq1UXsl1RkyqyTV78bYCrZYzJc4vxf9xf0ZlT4g</recordid><startdate>2019</startdate><enddate>2019</enddate><creator>Guan, Y.</creator><creator>Vossen, A.</creator><creator>Adachi, I.</creator><creator>Adamczyk, K.</creator><creator>Ahn, J.K.</creator><creator>Aihara, H.</creator><creator>Al Said, S.</creator><creator>Asner, D.M.</creator><creator>Atmacan, H.</creator><creator>Aulchenko, 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R.</creatorcontrib><creatorcontrib>Kuzmin, A.</creatorcontrib><creatorcontrib>Kwon, Y.-J.</creatorcontrib><creatorcontrib>Lange, J.S.</creatorcontrib><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Physical review letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Guan, Y.</au><au>Vossen, A.</au><au>Adachi, I.</au><au>Adamczyk, K.</au><au>Ahn, J.K.</au><au>Aihara, H.</au><au>Al Said, S.</au><au>Asner, D.M.</au><au>Atmacan, H.</au><au>Aulchenko, V.</au><au>Aushev, T.</au><au>Ayad, R.</au><au>Babu, V.</au><au>Badhrees, I.</au><au>Bakich, A.M.</au><au>Bansal, V.</au><au>Behera, P.</au><au>Beleño, C.</au><au>Berger, M.</au><au>Bhardwaj, V.</au><au>Bhuyan, B.</au><au>Bilka, T.</au><au>Biswal, J.</au><au>Bobrov, A.</au><au>Bonvicini, G.</au><au>Bozek, A.</au><au>Bračko, M.</au><au>Browder, T.E.</au><au>Cao, L.</au><au>Červenkov, D.</au><au>Chang, P.</au><au>Chekelian, V.</au><au>Chen, A.</au><au>Cheon, B.G.</au><au>Chilikin, K.</au><au>Cho, K.</au><au>Choi, S.-K.</au><au>Choi, Y.</au><au>Cinabro, D.</au><au>Cunliffe, S.</au><au>Dash, N.</au><au>Di Carlo, S.</au><au>Dingfelder, J.</au><au>Doležal, Z.</au><au>Dong, T.V.</au><au>Drásal, Z.</au><au>Eidelman, S.</au><au>Epifanov, D.</au><au>Fast, J.E.</au><au>Ferber, T.</au><au>Fulsom, B.G.</au><au>Garg, R.</au><au>Gaur, V.</au><au>Gabyshev, N.</au><au>Garmash, A.</au><au>Gelb, M.</au><au>Giri, A.</au><au>Goldenzweig, P.</au><au>Golob, B.</au><au>Guido, E.</au><au>Haba, J.</au><au>Hayasaka, K.</au><au>Hayashii, H.</au><au>Hirose, S.</au><au>Hou, W.-S.</au><au>Iijima, T.</au><au>Inami, K.</au><au>Inguglia, G.</au><au>Ishikawa, A.</au><au>Itoh, R.</au><au>Iwasaki, M.</au><au>Iwasaki, Y.</au><au>Jacobs, W.W.</au><au>Jaegle, I.</au><au>Jeon, H.B.</au><au>Jia, S.</au><au>Jin, Y.</au><au>Joffe, D.</au><au>Joo, K.K.</au><au>Julius, T.</au><au>Kang, K.H.</au><au>Kawasaki, T.</au><au>Kiesling, C.</au><au>Kim, D.Y.</au><au>Kim, H.J.</au><au>Kim, J.B.</au><au>Kim, K.T.</au><au>Kim, S.H.</au><au>Kinoshita, K.</au><au>Kodyš, P.</au><au>Korpar, S.</au><au>Kotchetkov, D.</au><au>Križan, P.</au><au>Kroeger, R.</au><au>Krokovny, P.</au><au>Kuhr, T.</au><au>Kulasiri, R.</au><au>Kuzmin, A.</au><au>Kwon, Y.-J.</au><au>Lange, J.S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Observation of Transverse $\Lambda/\bar{\Lambda}$ Hyperon Polarization in $e^+e^-$ Annihilation at Belle</atitle><jtitle>Physical review letters</jtitle><date>2019</date><risdate>2019</risdate><volume>122</volume><issue>4</issue><issn>0031-9007</issn><eissn>1079-7114</eissn><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.</abstract><pub>American Physical Society</pub><doi>10.1103/PhysRevLett.122.042001</doi><orcidid>https://orcid.org/0000-0001-5790-3129</orcidid><orcidid>https://orcid.org/0000-0001-5790-3129</orcidid></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0031-9007 |
| ispartof | Physical review letters, 2019, Vol.122 (4) |
| issn | 0031-9007 1079-7114 |
| language | eng |
| recordid | cdi_hal_primary_oai_HAL_hal_01863145v1 |
| source | American Physical Society Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | High Energy Physics - Experiment Physics |
| title | Observation of Transverse $\Lambda/\bar{\Lambda}$ Hyperon Polarization in $e^+e^-$ Annihilation at Belle |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-11T06%3A39%3A57IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-hal&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Observation%20of%20Transverse%20$%5CLambda/%5Cbar%7B%5CLambda%7D$%20Hyperon%20Polarization%20in%20$e%5E+e%5E-$%20Annihilation%20at%20Belle&rft.jtitle=Physical%20review%20letters&rft.au=Guan,%20Y.&rft.date=2019&rft.volume=122&rft.issue=4&rft.issn=0031-9007&rft.eissn=1079-7114&rft_id=info:doi/10.1103/PhysRevLett.122.042001&rft_dat=%3Chal%3Eoai_HAL_hal_01863145v1%3C/hal%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |