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Determination of the Λ c + spin via the reaction e + e − → Λ c Λ ¯ c
We report on a comparison of two possible Λ+c spin hypotheses, J = 1/2 and 3/2, via the process e+e− → Λ+ c¯Λ−c , using the angular distributions of Λ+c decays into pK0S , Λπ+, Σ0π+, and Σ+π0. The data were recorded at √ s = 4.6 GeV with the BESIII detector and correspond to an integrated luminosity...
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| Published in: | Physical review. D 2021-05, Vol.103 (9), p.1, Article L091101 |
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| creator | Ablikim, M. Achasov, M. N. Adlarson, P. Ahmed, S. Albrecht, M. Aliberti, R. Amoroso, A. An, M. R. An, Q. Bai, X. H. Bai, Y. Bakina, O. Ferroli, R. Baldini Balossino, I. Ban, Y. Begzsuren, K. Berger, N. Bertani, M. Bettoni, D. Bianchi, F. Bloms, J. Bortone, A. Boyko, I. Briere, R. A. Cai, H. Cai, X. Calcaterra, A. Cao, G. F. Cao, N. Cetin, S. A. Chang, J. F. Chang, W. L. Chelkov, G. Chen, D. Y. Chen, G. Chen, H. S. Chen, M. L. Chen, S. J. Chen, X. R. Chen, Y. B. Chen, Z. J. Cheng, W. S. Cibinetto, G. Cossio, F. Cui, X. F. Dai, H. L. Dai, X. C. Dbeyssi, A. de Boer, R. E. Dedovich, D. Deng, Z. Y. Denig, A. Denysenko, I. Destefanis, M. De Mori, F. Ding, Y. Dong, C. Dong, J. Dong, L. Y. Dong, M. Y. Dong, X. Du, S. X. Fan, Y. L. Fang, J. Fang, S. S. Fang, Y. Farinelli, R. Fava, L. Feldbauer, F. Felici, G. Feng, C. Q. Feng, J. H. Fritsch, M. Fu, C. D. Gao, Y. Gao, Y. G. Garzia, I. Ge, P. T. Geng, C. Gersabeck, E. M. Gilman, A. Goetzen, K. Gong, L. Gong, W. X. Gradl, W. Greco, M. Gu, L. M. Gu, M. H. Gu, S. Gu, Y. T. Guan, C. Y. Guo, A. Q. Guo, L. B. Guo, R. P. Guo, Y. P. Guskov, A. Han, T. T. Han, W. Y. Hao, X. Q. Harris, F. A. |
| description | We report on a comparison of two possible Λ+c spin hypotheses, J = 1/2 and 3/2, via the process e+e− → Λ+ c¯Λ−c , using the angular distributions of Λ+c decays into pK0S , Λπ+, Σ0π+, and Σ+π0. The data were recorded at √ s = 4.6 GeV with the BESIII detector and correspond to an integrated luminosity of 587 pb−1. The Λ+c spin is determined to be J = 1/2, with this value favored over the 3/2 hypothesis with a significance corresponding to more than 6 Gaussian standard deviations. |
| doi_str_mv | 10.1103/PhysRevD.103.L091101 |
| format | article |
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N. ; Adlarson, P. ; Ahmed, S. ; Albrecht, M. ; Aliberti, R. ; Amoroso, A. ; An, M. R. ; An, Q. ; Bai, X. H. ; Bai, Y. ; Bakina, O. ; Ferroli, R. Baldini ; Balossino, I. ; Ban, Y. ; Begzsuren, K. ; Berger, N. ; Bertani, M. ; Bettoni, D. ; Bianchi, F. ; Bloms, J. ; Bortone, A. ; Boyko, I. ; Briere, R. A. ; Cai, H. ; Cai, X. ; Calcaterra, A. ; Cao, G. F. ; Cao, N. ; Cetin, S. A. ; Chang, J. F. ; Chang, W. L. ; Chelkov, G. ; Chen, D. Y. ; Chen, G. ; Chen, H. S. ; Chen, M. L. ; Chen, S. J. ; Chen, X. R. ; Chen, Y. B. ; Chen, Z. J. ; Cheng, W. S. ; Cibinetto, G. ; Cossio, F. ; Cui, X. F. ; Dai, H. L. ; Dai, X. C. ; Dbeyssi, A. ; de Boer, R. E. ; Dedovich, D. ; Deng, Z. Y. ; Denig, A. ; Denysenko, I. ; Destefanis, M. ; De Mori, F. ; Ding, Y. ; Dong, C. ; Dong, J. ; Dong, L. Y. ; Dong, M. Y. ; Dong, X. ; Du, S. X. ; Fan, Y. L. ; Fang, J. ; Fang, S. S. ; Fang, Y. ; Farinelli, R. ; Fava, L. ; Feldbauer, F. ; Felici, G. ; Feng, C. Q. ; Feng, J. H. ; Fritsch, M. ; Fu, C. D. ; Gao, Y. ; Gao, Y. G. ; Garzia, I. ; Ge, P. T. ; Geng, C. ; Gersabeck, E. M. ; Gilman, A. ; Goetzen, K. ; Gong, L. ; Gong, W. X. ; Gradl, W. ; Greco, M. ; Gu, L. M. ; Gu, M. H. ; Gu, S. ; Gu, Y. T. ; Guan, C. Y. ; Guo, A. Q. ; Guo, L. B. ; Guo, R. P. ; Guo, Y. P. ; Guskov, A. ; Han, T. T. ; Han, W. Y. ; Hao, X. Q. ; Harris, F. A.</creator><creatorcontrib>Ablikim, M. ; Achasov, M. N. ; Adlarson, P. ; Ahmed, S. ; Albrecht, M. ; Aliberti, R. ; Amoroso, A. ; An, M. R. ; An, Q. ; Bai, X. H. ; Bai, Y. ; Bakina, O. ; Ferroli, R. Baldini ; Balossino, I. ; Ban, Y. ; Begzsuren, K. ; Berger, N. ; Bertani, M. ; Bettoni, D. ; Bianchi, F. ; Bloms, J. ; Bortone, A. ; Boyko, I. ; Briere, R. A. ; Cai, H. ; Cai, X. ; Calcaterra, A. ; Cao, G. F. ; Cao, N. ; Cetin, S. A. ; Chang, J. F. ; Chang, W. L. ; Chelkov, G. ; Chen, D. Y. ; Chen, G. ; Chen, H. S. ; Chen, M. L. ; Chen, S. J. ; Chen, X. R. ; Chen, Y. B. ; Chen, Z. J. ; Cheng, W. S. ; Cibinetto, G. ; Cossio, F. ; Cui, X. F. ; Dai, H. L. ; Dai, X. C. ; Dbeyssi, A. ; de Boer, R. E. ; Dedovich, D. ; Deng, Z. Y. ; Denig, A. ; Denysenko, I. ; Destefanis, M. ; De Mori, F. ; Ding, Y. ; Dong, C. ; Dong, J. ; Dong, L. Y. ; Dong, M. Y. ; Dong, X. ; Du, S. X. ; Fan, Y. L. ; Fang, J. ; Fang, S. S. ; Fang, Y. ; Farinelli, R. ; Fava, L. ; Feldbauer, F. ; Felici, G. ; Feng, C. Q. ; Feng, J. H. ; Fritsch, M. ; Fu, C. D. ; Gao, Y. ; Gao, Y. G. ; Garzia, I. ; Ge, P. T. ; Geng, C. ; Gersabeck, E. M. ; Gilman, A. ; Goetzen, K. ; Gong, L. ; Gong, W. X. ; Gradl, W. ; Greco, M. ; Gu, L. M. ; Gu, M. H. ; Gu, S. ; Gu, Y. T. ; Guan, C. Y. ; Guo, A. Q. ; Guo, L. B. ; Guo, R. P. ; Guo, Y. P. ; Guskov, A. ; Han, T. T. ; Han, W. Y. ; Hao, X. Q. ; Harris, F. A. ; BESIII Collaboration ; Univ. of Minnesota, Minneapolis, MN (United States) ; Indiana Univ., Bloomington, IN (United States)</creatorcontrib><description>We report on a comparison of two possible Λ+c spin hypotheses, J = 1/2 and 3/2, via the process e+e− → Λ+ c¯Λ−c , using the angular distributions of Λ+c decays into pK0S , Λπ+, Σ0π+, and Σ+π0. The data were recorded at √ s = 4.6 GeV with the BESIII detector and correspond to an integrated luminosity of 587 pb−1. The Λ+c spin is determined to be J = 1/2, with this value favored over the 3/2 hypothesis with a significance corresponding to more than 6 Gaussian standard deviations.</description><identifier>ISSN: 2470-0010</identifier><identifier>ISSN: 2470-0029</identifier><identifier>EISSN: 2470-0029</identifier><identifier>DOI: 10.1103/PhysRevD.103.L091101</identifier><language>eng</language><publisher>College Park: American Physical Society</publisher><subject>Astronomy & Astrophysics ; Hypotheses ; Luminosity ; Particle properties ; Physics ; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ; Spin ; Strong interaction</subject><ispartof>Physical review. 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H.</creatorcontrib><creatorcontrib>Gu, S.</creatorcontrib><creatorcontrib>Gu, Y. T.</creatorcontrib><creatorcontrib>Guan, C. Y.</creatorcontrib><creatorcontrib>Guo, A. Q.</creatorcontrib><creatorcontrib>Guo, L. B.</creatorcontrib><creatorcontrib>Guo, R. P.</creatorcontrib><creatorcontrib>Guo, Y. P.</creatorcontrib><creatorcontrib>Guskov, A.</creatorcontrib><creatorcontrib>Han, T. T.</creatorcontrib><creatorcontrib>Han, W. Y.</creatorcontrib><creatorcontrib>Hao, X. Q.</creatorcontrib><creatorcontrib>Harris, F. A.</creatorcontrib><creatorcontrib>BESIII Collaboration</creatorcontrib><creatorcontrib>Univ. of Minnesota, Minneapolis, MN (United States)</creatorcontrib><creatorcontrib>Indiana Univ., Bloomington, IN (United States)</creatorcontrib><title>Determination of the Λ c + spin via the reaction e + e − → Λ c Λ ¯ c</title><title>Physical review. D</title><description>We report on a comparison of two possible Λ+c spin hypotheses, J = 1/2 and 3/2, via the process e+e− → Λ+ c¯Λ−c , using the angular distributions of Λ+c decays into pK0S , Λπ+, Σ0π+, and Σ+π0. The data were recorded at √ s = 4.6 GeV with the BESIII detector and correspond to an integrated luminosity of 587 pb−1. The Λ+c spin is determined to be J = 1/2, with this value favored over the 3/2 hypothesis with a significance corresponding to more than 6 Gaussian standard deviations.</description><subject>Astronomy & Astrophysics</subject><subject>Hypotheses</subject><subject>Luminosity</subject><subject>Particle properties</subject><subject>Physics</subject><subject>PHYSICS OF ELEMENTARY PARTICLES AND FIELDS</subject><subject>Spin</subject><subject>Strong interaction</subject><issn>2470-0010</issn><issn>2470-0029</issn><issn>2470-0029</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNo9kU1OAjEYhidGEwlyAxeNLhVsZ0p_lgT8SybRGHXbzHRaKZEptjMYLmBcs_UQ3sEDeAhOYmGQzff75P3y5Y2iYwR7CMHk4n688A9qPuqFppdCHoZoL2rFmMIuhDHf39UIHkYd7ycwlARyilArSkeqUm5qyqwytgRWg2qswO8XkOAM-Jkpwdxkm5lTmdwwKmwUWH0uwepj2aAh_HwDeRQd6OzVq842t6Onq8vH4U03vbu-HQ7SrkSM8S6GmseUUZj3dUwQRpzkBdRYFyjLCilzSrEmlPKAIM440QTnWBUFZTFJEpy0o_NG17-rWZ2LmTPTzC2EzYwYmeeBsO5F1LXAmDDOA37S4NZXRnhpKiXH0palkpVADHOSxAE6baCZs2-18pWY2NqV4Q0R95M-Y_2YrqVwQ0lnvXdK724jKNZ2iH87xLrZ2pH8AZo7frg</recordid><startdate>20210501</startdate><enddate>20210501</enddate><creator>Ablikim, M.</creator><creator>Achasov, M. 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S.</creator><creator>Fang, Y.</creator><creator>Farinelli, R.</creator><creator>Fava, L.</creator><creator>Feldbauer, F.</creator><creator>Felici, G.</creator><creator>Feng, C. Q.</creator><creator>Feng, J. H.</creator><creator>Fritsch, M.</creator><creator>Fu, C. D.</creator><creator>Gao, Y.</creator><creator>Gao, Y. G.</creator><creator>Garzia, I.</creator><creator>Ge, P. T.</creator><creator>Geng, C.</creator><creator>Gersabeck, E. M.</creator><creator>Gilman, A.</creator><creator>Goetzen, K.</creator><creator>Gong, L.</creator><creator>Gong, W. X.</creator><creator>Gradl, W.</creator><creator>Greco, M.</creator><creator>Gu, L. M.</creator><creator>Gu, M. H.</creator><creator>Gu, S.</creator><creator>Gu, Y. T.</creator><creator>Guan, C. Y.</creator><creator>Guo, A. Q.</creator><creator>Guo, L. B.</creator><creator>Guo, R. P.</creator><creator>Guo, Y. P.</creator><creator>Guskov, A.</creator><creator>Han, T. T.</creator><creator>Han, W. Y.</creator><creator>Hao, X. Q.</creator><creator>Harris, F. A.</creator><general>American Physical Society</general><general>American Physical Society (APS)</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>OIOZB</scope><scope>OTOTI</scope><scope>ACNBI</scope><scope>ADTPV</scope><scope>AOWAS</scope><scope>D8T</scope><scope>DF2</scope><scope>ZZAVC</scope><orcidid>https://orcid.org/0000000295774855</orcidid></search><sort><creationdate>20210501</creationdate><title>Determination of the Λ c + spin via the reaction e + e − → Λ c Λ ¯ c</title><author>Ablikim, M. ; Achasov, M. N. ; Adlarson, P. ; Ahmed, S. ; Albrecht, M. ; Aliberti, R. ; Amoroso, A. ; An, M. R. ; An, Q. ; Bai, X. H. ; Bai, Y. ; Bakina, O. ; Ferroli, R. Baldini ; Balossino, I. ; Ban, Y. ; Begzsuren, K. ; Berger, N. ; Bertani, M. ; Bettoni, D. ; Bianchi, F. ; Bloms, J. ; Bortone, A. ; Boyko, I. ; Briere, R. A. ; Cai, H. ; Cai, X. ; Calcaterra, A. ; Cao, G. F. ; Cao, N. ; Cetin, S. A. ; Chang, J. F. ; Chang, W. L. ; Chelkov, G. ; Chen, D. Y. ; Chen, G. ; Chen, H. S. ; Chen, M. L. ; Chen, S. J. ; Chen, X. R. ; Chen, Y. B. ; Chen, Z. J. ; Cheng, W. S. ; Cibinetto, G. ; Cossio, F. ; Cui, X. F. ; Dai, H. L. ; Dai, X. C. ; Dbeyssi, A. ; de Boer, R. E. ; Dedovich, D. ; Deng, Z. Y. ; Denig, A. ; Denysenko, I. ; Destefanis, M. ; De Mori, F. ; Ding, Y. ; Dong, C. ; Dong, J. ; Dong, L. Y. ; Dong, M. Y. ; Dong, X. ; Du, S. X. ; Fan, Y. L. ; Fang, J. ; Fang, S. S. ; Fang, Y. ; Farinelli, R. ; Fava, L. ; Feldbauer, F. ; Felici, G. ; Feng, C. Q. ; Feng, J. H. ; Fritsch, M. ; Fu, C. D. ; Gao, Y. ; Gao, Y. G. ; Garzia, I. ; Ge, P. T. ; Geng, C. ; Gersabeck, E. M. ; Gilman, A. ; Goetzen, K. ; Gong, L. ; Gong, W. X. ; Gradl, W. ; Greco, M. ; Gu, L. M. ; Gu, M. H. ; Gu, S. ; Gu, Y. T. ; Guan, C. Y. ; Guo, A. Q. ; Guo, L. B. ; Guo, R. P. ; Guo, Y. P. ; Guskov, A. ; Han, T. T. ; Han, W. Y. ; Hao, X. Q. ; Harris, F. A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c1889-40f927870b5f2614196bd0f4fd1aadccb774f677987019896f64b4edd78263343</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Astronomy & Astrophysics</topic><topic>Hypotheses</topic><topic>Luminosity</topic><topic>Particle properties</topic><topic>Physics</topic><topic>PHYSICS OF ELEMENTARY PARTICLES AND FIELDS</topic><topic>Spin</topic><topic>Strong interaction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ablikim, M.</creatorcontrib><creatorcontrib>Achasov, M. N.</creatorcontrib><creatorcontrib>Adlarson, P.</creatorcontrib><creatorcontrib>Ahmed, S.</creatorcontrib><creatorcontrib>Albrecht, M.</creatorcontrib><creatorcontrib>Aliberti, R.</creatorcontrib><creatorcontrib>Amoroso, A.</creatorcontrib><creatorcontrib>An, M. R.</creatorcontrib><creatorcontrib>An, Q.</creatorcontrib><creatorcontrib>Bai, X. H.</creatorcontrib><creatorcontrib>Bai, Y.</creatorcontrib><creatorcontrib>Bakina, O.</creatorcontrib><creatorcontrib>Ferroli, R. Baldini</creatorcontrib><creatorcontrib>Balossino, I.</creatorcontrib><creatorcontrib>Ban, Y.</creatorcontrib><creatorcontrib>Begzsuren, K.</creatorcontrib><creatorcontrib>Berger, N.</creatorcontrib><creatorcontrib>Bertani, M.</creatorcontrib><creatorcontrib>Bettoni, D.</creatorcontrib><creatorcontrib>Bianchi, F.</creatorcontrib><creatorcontrib>Bloms, J.</creatorcontrib><creatorcontrib>Bortone, A.</creatorcontrib><creatorcontrib>Boyko, I.</creatorcontrib><creatorcontrib>Briere, R. A.</creatorcontrib><creatorcontrib>Cai, H.</creatorcontrib><creatorcontrib>Cai, X.</creatorcontrib><creatorcontrib>Calcaterra, A.</creatorcontrib><creatorcontrib>Cao, G. F.</creatorcontrib><creatorcontrib>Cao, N.</creatorcontrib><creatorcontrib>Cetin, S. A.</creatorcontrib><creatorcontrib>Chang, J. F.</creatorcontrib><creatorcontrib>Chang, W. L.</creatorcontrib><creatorcontrib>Chelkov, G.</creatorcontrib><creatorcontrib>Chen, D. Y.</creatorcontrib><creatorcontrib>Chen, G.</creatorcontrib><creatorcontrib>Chen, H. S.</creatorcontrib><creatorcontrib>Chen, M. L.</creatorcontrib><creatorcontrib>Chen, S. J.</creatorcontrib><creatorcontrib>Chen, X. R.</creatorcontrib><creatorcontrib>Chen, Y. B.</creatorcontrib><creatorcontrib>Chen, Z. J.</creatorcontrib><creatorcontrib>Cheng, W. S.</creatorcontrib><creatorcontrib>Cibinetto, G.</creatorcontrib><creatorcontrib>Cossio, F.</creatorcontrib><creatorcontrib>Cui, X. F.</creatorcontrib><creatorcontrib>Dai, H. L.</creatorcontrib><creatorcontrib>Dai, X. C.</creatorcontrib><creatorcontrib>Dbeyssi, A.</creatorcontrib><creatorcontrib>de Boer, R. E.</creatorcontrib><creatorcontrib>Dedovich, D.</creatorcontrib><creatorcontrib>Deng, Z. Y.</creatorcontrib><creatorcontrib>Denig, A.</creatorcontrib><creatorcontrib>Denysenko, I.</creatorcontrib><creatorcontrib>Destefanis, M.</creatorcontrib><creatorcontrib>De Mori, F.</creatorcontrib><creatorcontrib>Ding, Y.</creatorcontrib><creatorcontrib>Dong, C.</creatorcontrib><creatorcontrib>Dong, J.</creatorcontrib><creatorcontrib>Dong, L. Y.</creatorcontrib><creatorcontrib>Dong, M. Y.</creatorcontrib><creatorcontrib>Dong, X.</creatorcontrib><creatorcontrib>Du, S. X.</creatorcontrib><creatorcontrib>Fan, Y. L.</creatorcontrib><creatorcontrib>Fang, J.</creatorcontrib><creatorcontrib>Fang, S. S.</creatorcontrib><creatorcontrib>Fang, Y.</creatorcontrib><creatorcontrib>Farinelli, R.</creatorcontrib><creatorcontrib>Fava, L.</creatorcontrib><creatorcontrib>Feldbauer, F.</creatorcontrib><creatorcontrib>Felici, G.</creatorcontrib><creatorcontrib>Feng, C. Q.</creatorcontrib><creatorcontrib>Feng, J. H.</creatorcontrib><creatorcontrib>Fritsch, M.</creatorcontrib><creatorcontrib>Fu, C. D.</creatorcontrib><creatorcontrib>Gao, Y.</creatorcontrib><creatorcontrib>Gao, Y. G.</creatorcontrib><creatorcontrib>Garzia, I.</creatorcontrib><creatorcontrib>Ge, P. T.</creatorcontrib><creatorcontrib>Geng, C.</creatorcontrib><creatorcontrib>Gersabeck, E. M.</creatorcontrib><creatorcontrib>Gilman, A.</creatorcontrib><creatorcontrib>Goetzen, K.</creatorcontrib><creatorcontrib>Gong, L.</creatorcontrib><creatorcontrib>Gong, W. X.</creatorcontrib><creatorcontrib>Gradl, W.</creatorcontrib><creatorcontrib>Greco, M.</creatorcontrib><creatorcontrib>Gu, L. M.</creatorcontrib><creatorcontrib>Gu, M. H.</creatorcontrib><creatorcontrib>Gu, S.</creatorcontrib><creatorcontrib>Gu, Y. T.</creatorcontrib><creatorcontrib>Guan, C. Y.</creatorcontrib><creatorcontrib>Guo, A. Q.</creatorcontrib><creatorcontrib>Guo, L. B.</creatorcontrib><creatorcontrib>Guo, R. P.</creatorcontrib><creatorcontrib>Guo, Y. P.</creatorcontrib><creatorcontrib>Guskov, A.</creatorcontrib><creatorcontrib>Han, T. T.</creatorcontrib><creatorcontrib>Han, W. Y.</creatorcontrib><creatorcontrib>Hao, X. Q.</creatorcontrib><creatorcontrib>Harris, F. A.</creatorcontrib><creatorcontrib>BESIII Collaboration</creatorcontrib><creatorcontrib>Univ. of Minnesota, Minneapolis, MN (United States)</creatorcontrib><creatorcontrib>Indiana Univ., Bloomington, IN (United States)</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><collection>SWEPUB Uppsala universitet full text</collection><collection>SwePub</collection><collection>SwePub Articles</collection><collection>SWEPUB Freely available online</collection><collection>SWEPUB Uppsala universitet</collection><collection>SwePub Articles full text</collection><jtitle>Physical review. D</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ablikim, M.</au><au>Achasov, M. N.</au><au>Adlarson, P.</au><au>Ahmed, S.</au><au>Albrecht, M.</au><au>Aliberti, R.</au><au>Amoroso, A.</au><au>An, M. R.</au><au>An, Q.</au><au>Bai, X. H.</au><au>Bai, Y.</au><au>Bakina, O.</au><au>Ferroli, R. Baldini</au><au>Balossino, I.</au><au>Ban, Y.</au><au>Begzsuren, K.</au><au>Berger, N.</au><au>Bertani, M.</au><au>Bettoni, D.</au><au>Bianchi, F.</au><au>Bloms, J.</au><au>Bortone, A.</au><au>Boyko, I.</au><au>Briere, R. A.</au><au>Cai, H.</au><au>Cai, X.</au><au>Calcaterra, A.</au><au>Cao, G. F.</au><au>Cao, N.</au><au>Cetin, S. A.</au><au>Chang, J. F.</au><au>Chang, W. L.</au><au>Chelkov, G.</au><au>Chen, D. Y.</au><au>Chen, G.</au><au>Chen, H. S.</au><au>Chen, M. L.</au><au>Chen, S. J.</au><au>Chen, X. R.</au><au>Chen, Y. B.</au><au>Chen, Z. J.</au><au>Cheng, W. S.</au><au>Cibinetto, G.</au><au>Cossio, F.</au><au>Cui, X. F.</au><au>Dai, H. L.</au><au>Dai, X. C.</au><au>Dbeyssi, A.</au><au>de Boer, R. E.</au><au>Dedovich, D.</au><au>Deng, Z. Y.</au><au>Denig, A.</au><au>Denysenko, I.</au><au>Destefanis, M.</au><au>De Mori, F.</au><au>Ding, Y.</au><au>Dong, C.</au><au>Dong, J.</au><au>Dong, L. Y.</au><au>Dong, M. Y.</au><au>Dong, X.</au><au>Du, S. X.</au><au>Fan, Y. L.</au><au>Fang, J.</au><au>Fang, S. S.</au><au>Fang, Y.</au><au>Farinelli, R.</au><au>Fava, L.</au><au>Feldbauer, F.</au><au>Felici, G.</au><au>Feng, C. Q.</au><au>Feng, J. H.</au><au>Fritsch, M.</au><au>Fu, C. D.</au><au>Gao, Y.</au><au>Gao, Y. G.</au><au>Garzia, I.</au><au>Ge, P. T.</au><au>Geng, C.</au><au>Gersabeck, E. M.</au><au>Gilman, A.</au><au>Goetzen, K.</au><au>Gong, L.</au><au>Gong, W. X.</au><au>Gradl, W.</au><au>Greco, M.</au><au>Gu, L. M.</au><au>Gu, M. H.</au><au>Gu, S.</au><au>Gu, Y. T.</au><au>Guan, C. Y.</au><au>Guo, A. Q.</au><au>Guo, L. B.</au><au>Guo, R. P.</au><au>Guo, Y. P.</au><au>Guskov, A.</au><au>Han, T. T.</au><au>Han, W. Y.</au><au>Hao, X. Q.</au><au>Harris, F. A.</au><aucorp>BESIII Collaboration</aucorp><aucorp>Univ. of Minnesota, Minneapolis, MN (United States)</aucorp><aucorp>Indiana Univ., Bloomington, IN (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Determination of the Λ c + spin via the reaction e + e − → Λ c Λ ¯ c</atitle><jtitle>Physical review. D</jtitle><date>2021-05-01</date><risdate>2021</risdate><volume>103</volume><issue>9</issue><spage>1</spage><pages>1-</pages><artnum>L091101</artnum><issn>2470-0010</issn><issn>2470-0029</issn><eissn>2470-0029</eissn><abstract>We report on a comparison of two possible Λ+c spin hypotheses, J = 1/2 and 3/2, via the process e+e− → Λ+ c¯Λ−c , using the angular distributions of Λ+c decays into pK0S , Λπ+, Σ0π+, and Σ+π0. The data were recorded at √ s = 4.6 GeV with the BESIII detector and correspond to an integrated luminosity of 587 pb−1. The Λ+c spin is determined to be J = 1/2, with this value favored over the 3/2 hypothesis with a significance corresponding to more than 6 Gaussian standard deviations.</abstract><cop>College Park</cop><pub>American Physical Society</pub><doi>10.1103/PhysRevD.103.L091101</doi><orcidid>https://orcid.org/0000000295774855</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 2470-0010 |
| ispartof | Physical review. D, 2021-05, Vol.103 (9), p.1, Article L091101 |
| issn | 2470-0010 2470-0029 2470-0029 |
| language | eng |
| recordid | cdi_swepub_primary_oai_DiVA_org_uu_446899 |
| source | American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list) |
| subjects | Astronomy & Astrophysics Hypotheses Luminosity Particle properties Physics PHYSICS OF ELEMENTARY PARTICLES AND FIELDS Spin Strong interaction |
| title | Determination of the Λ c + spin via the reaction e + e − → Λ c Λ ¯ c |
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