Search for CP violation and measurement of branching fractions and decay asymmetry parameters for Λc+→Λh+ and Λc+→Σ0h+ (h=K,π)
We report a study of Λc+→Λh+ and Λc+→Σ0h+ (h=K,π) decays based on a data sample of 980fb-1 collected with the Belle detector at the KEKB energy-asymmetric e+e- collider. The first results of direct CP asymmetry in two-body singly Cabibbo-suppressed (SCS) decays of charmed baryons are measured, ACPdi...
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| Veröffentlicht in: | Science bulletin 2023-03, Vol.68 (6), p.583-592 |
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| creator | Kinoshita, K. Adachi, I. Aihara, H. Asner, D.M. Atmacan, H. Aushev, T. Bahinipati, S. Banerjee, Sw Bennett, J. Bhardwaj, V. Bhuyan, B. Bobrov, A. Bodrov, D. Borah, J. Bračko, M. Branchini, P. Budano, A. Chang, M.-C. Chekelian, V. Chen, A. Chilikin, K. Cho, H.E. Cho, S.-J. Choi, Y. Choudhury, S. Dash, N. De Pietro, G. Dhamija, R. Epifanov, D. Garmash, A. Goldenzweig, P. Gong, G. Graziani, E. Gu, T. Gudkova, K. Hadjivasiliou, C. Hayashii, H. Inami, K. Jacobs, W.W. Jang, E.-J. Ji, Q.P. Joo, K.K. Kim, C.H. Kodyš, P. Korpar, S. Kumar, R. Kumara, K. Kwon, Y.-J. Lee, S.C. Li, J. Li, S.X. Libby, J. Lieret, K. Masuda, M. Maurya, S.K. Merola, M. Metzner, F. Miyabayashi, K. Mussa, R. Nakao, M. Natochii, A. Nayak, L. Nayak, M. Niiyama, M. Ogawa, S. Ono, H. Pakhlova, G. Pardi, S. Paul, S. Pedlar, T.K. Pestotnik, R. Podobnik, T. Prencipe, E. Prim, M.T. Rostomyan, A. Sahoo, D. Sakai, Y. Sandilya, S. Schwanda, C. Seino, Y. Sharma, C. Shen, C.P. Singh, J.B. Sokolov, A. Solovieva, E. Starič, M. Sumiyoshi, T. Sutcliffe, W. Tamponi, U. Tenchini, F. Uchida, M. Vahsen, S.E. Vinokurova, A. Watanabe, M. Werbycka, O. Yabsley, B.D. Yelton, J. Yin, J.H. Yuan, C.Z. Zhilich, V. |
| description | We report a study of Λc+→Λh+ and Λc+→Σ0h+ (h=K,π) decays based on a data sample of 980fb-1 collected with the Belle detector at the KEKB energy-asymmetric e+e- collider. The first results of direct CP asymmetry in two-body singly Cabibbo-suppressed (SCS) decays of charmed baryons are measured, ACPdir(Λc+→ΛK+)=+0.021±0.026±0.001 and ACPdir(Λc+→Σ0K+)=+0.025±0.054±0.004. We also make the most precise measurement of the decay asymmetry parameters (α) for the four modes of interest and search for CP violation via the α-induced CP asymmetry (ACPα). We measure ACPα(Λc+→ΛK+)=-0.023±0.086±0.071 and ACPα(Λc+→Σ0K+)=+0.08±0.35±0.14, which are the first ACPα results for SCS decays of charmed baryons. We search for Λ-hyperon CP violation in Λc+→(Λ,Σ0)π+ and find ACPα(Λ→pπ-)=+0.013±0.007±0.011. This is the first time that hyperon CP violation has been measured via Cabibbo-favored charm decays. No evidence of baryon CP violation is found. We also obtain the most precise branching fractions for two SCS Λc+ decays, B(Λc+→ΛK+)=(6.57±0.17±0.11±0.35)×10-4 and B(Λc+→Σ0K+)=(3.58±0.19±0.06±0.19)×10-4. The first uncertainties are statistical and the second systematic, while the third uncertainties come from the uncertainties on the world average branching fractions of Λc+→(Λ,Σ0)π+. |
| doi_str_mv | 10.1016/j.scib.2023.02.017 |
| format | Article |
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The first results of direct CP asymmetry in two-body singly Cabibbo-suppressed (SCS) decays of charmed baryons are measured, ACPdir(Λc+→ΛK+)=+0.021±0.026±0.001 and ACPdir(Λc+→Σ0K+)=+0.025±0.054±0.004. We also make the most precise measurement of the decay asymmetry parameters (α) for the four modes of interest and search for CP violation via the α-induced CP asymmetry (ACPα). We measure ACPα(Λc+→ΛK+)=-0.023±0.086±0.071 and ACPα(Λc+→Σ0K+)=+0.08±0.35±0.14, which are the first ACPα results for SCS decays of charmed baryons. We search for Λ-hyperon CP violation in Λc+→(Λ,Σ0)π+ and find ACPα(Λ→pπ-)=+0.013±0.007±0.011. This is the first time that hyperon CP violation has been measured via Cabibbo-favored charm decays. No evidence of baryon CP violation is found. We also obtain the most precise branching fractions for two SCS Λc+ decays, B(Λc+→ΛK+)=(6.57±0.17±0.11±0.35)×10-4 and B(Λc+→Σ0K+)=(3.58±0.19±0.06±0.19)×10-4. The first uncertainties are statistical and the second systematic, while the third uncertainties come from the uncertainties on the world average branching fractions of Λc+→(Λ,Σ0)π+.</description><identifier>ISSN: 2095-9273</identifier><identifier>EISSN: 2095-9281</identifier><identifier>DOI: 10.1016/j.scib.2023.02.017</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>[formula omitted] asymmetry ; [formula omitted] violation ; Branching fraction ; Charmed baryon ; Decay asymmetry parameter ; Singly Cabibbo-suppressed decay</subject><ispartof>Science bulletin, 2023-03, Vol.68 (6), p.583-592</ispartof><rights>2023 Science China Press</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><orcidid>0000-0002-0856-1131 ; 0000-0002-2572-4692 ; 0000-0002-7082-8108 ; 0000-0003-2172-3534 ; 0000-0003-3469-9377 ; 0000-0003-2435-501X ; 0000-0001-9839-7373 ; 0000-0002-9420-0091 ; 0000-0002-1407-7450 ; 0000-0002-9835-1006 ; 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L.</creatorcontrib><creatorcontrib>Nayak, M.</creatorcontrib><creatorcontrib>Niiyama, M.</creatorcontrib><creatorcontrib>Ogawa, S.</creatorcontrib><creatorcontrib>Ono, H.</creatorcontrib><creatorcontrib>Pakhlova, G.</creatorcontrib><creatorcontrib>Pardi, S.</creatorcontrib><creatorcontrib>Paul, S.</creatorcontrib><creatorcontrib>Pedlar, T.K.</creatorcontrib><creatorcontrib>Pestotnik, R.</creatorcontrib><creatorcontrib>Podobnik, T.</creatorcontrib><creatorcontrib>Prencipe, E.</creatorcontrib><creatorcontrib>Prim, M.T.</creatorcontrib><creatorcontrib>Rostomyan, A.</creatorcontrib><creatorcontrib>Sahoo, D.</creatorcontrib><creatorcontrib>Sakai, Y.</creatorcontrib><creatorcontrib>Sandilya, S.</creatorcontrib><creatorcontrib>Schwanda, C.</creatorcontrib><creatorcontrib>Seino, Y.</creatorcontrib><creatorcontrib>Sharma, C.</creatorcontrib><creatorcontrib>Shen, C.P.</creatorcontrib><creatorcontrib>Singh, J.B.</creatorcontrib><creatorcontrib>Sokolov, A.</creatorcontrib><creatorcontrib>Solovieva, E.</creatorcontrib><creatorcontrib>Starič, M.</creatorcontrib><creatorcontrib>Sumiyoshi, T.</creatorcontrib><creatorcontrib>Sutcliffe, W.</creatorcontrib><creatorcontrib>Tamponi, U.</creatorcontrib><creatorcontrib>Tenchini, F.</creatorcontrib><creatorcontrib>Uchida, M.</creatorcontrib><creatorcontrib>Vahsen, S.E.</creatorcontrib><creatorcontrib>Vinokurova, A.</creatorcontrib><creatorcontrib>Watanabe, M.</creatorcontrib><creatorcontrib>Werbycka, O.</creatorcontrib><creatorcontrib>Yabsley, B.D.</creatorcontrib><creatorcontrib>Yelton, J.</creatorcontrib><creatorcontrib>Yin, J.H.</creatorcontrib><creatorcontrib>Yuan, C.Z.</creatorcontrib><creatorcontrib>Zhilich, V.</creatorcontrib><creatorcontrib>The Belle Collaboration</creatorcontrib><title>Search for CP violation and measurement of branching fractions and decay asymmetry parameters for Λc+→Λh+ and Λc+→Σ0h+ (h=K,π)</title><title>Science bulletin</title><description>We report a study of Λc+→Λh+ and Λc+→Σ0h+ (h=K,π) decays based on a data sample of 980fb-1 collected with the Belle detector at the KEKB energy-asymmetric e+e- collider. The first results of direct CP asymmetry in two-body singly Cabibbo-suppressed (SCS) decays of charmed baryons are measured, ACPdir(Λc+→ΛK+)=+0.021±0.026±0.001 and ACPdir(Λc+→Σ0K+)=+0.025±0.054±0.004. We also make the most precise measurement of the decay asymmetry parameters (α) for the four modes of interest and search for CP violation via the α-induced CP asymmetry (ACPα). We measure ACPα(Λc+→ΛK+)=-0.023±0.086±0.071 and ACPα(Λc+→Σ0K+)=+0.08±0.35±0.14, which are the first ACPα results for SCS decays of charmed baryons. We search for Λ-hyperon CP violation in Λc+→(Λ,Σ0)π+ and find ACPα(Λ→pπ-)=+0.013±0.007±0.011. This is the first time that hyperon CP violation has been measured via Cabibbo-favored charm decays. No evidence of baryon CP violation is found. We also obtain the most precise branching fractions for two SCS Λc+ decays, B(Λc+→ΛK+)=(6.57±0.17±0.11±0.35)×10-4 and B(Λc+→Σ0K+)=(3.58±0.19±0.06±0.19)×10-4. The first uncertainties are statistical and the second systematic, while the third uncertainties come from the uncertainties on the world average branching fractions of Λc+→(Λ,Σ0)π+.</description><subject>[formula omitted] asymmetry</subject><subject>[formula omitted] violation</subject><subject>Branching fraction</subject><subject>Charmed baryon</subject><subject>Decay asymmetry parameter</subject><subject>Singly Cabibbo-suppressed decay</subject><issn>2095-9273</issn><issn>2095-9281</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNo9kUtOwzAQhiMEElXpBVh5WVQaxs7DiQQLVPESlUAC1pZjT2mqJil2Wqk7VrBn2yX3KXfgJDgtsJrXp18z83veIQWfAo1PJr5VeeYzYIEPzAfKd7wWgzTqpyyhu_85D_a9jrUTAKBhykLgLe_9AaVRYzKqDBnck0VeTWWdVyWRpSYFSjs3WGBZk2pEMiNLNc7LZzIyUjWU3WAalVwSaZdFgbVZkpk00mVo7EZ2vVK977eP9Wrc2-B_9Se4Rnd8dnv89Xp04O2N5NRi5ze2vafLi8fBdX94d3UzOB_2kXJa9-MwBZpAJMMo04EKgUXu7AxDnnCMdciDQKU8ljGNFWouZUoZJJlOtE5YQFXQ9rpb3ZmpXuZoa1HkVuF0Kkus5lYwnsTgXhWFDj3douj2WeRohHszlk43N6hqoatcUBCNBWLSzDLRWCCACWdB8ANQcH-x</recordid><startdate>20230330</startdate><enddate>20230330</enddate><creator>Kinoshita, K.</creator><creator>Adachi, I.</creator><creator>Aihara, H.</creator><creator>Asner, D.M.</creator><creator>Atmacan, H.</creator><creator>Aushev, T.</creator><creator>Bahinipati, S.</creator><creator>Banerjee, Sw</creator><creator>Bennett, J.</creator><creator>Bhardwaj, V.</creator><creator>Bhuyan, B.</creator><creator>Bobrov, A.</creator><creator>Bodrov, D.</creator><creator>Borah, J.</creator><creator>Bračko, M.</creator><creator>Branchini, P.</creator><creator>Budano, A.</creator><creator>Chang, M.-C.</creator><creator>Chekelian, V.</creator><creator>Chen, A.</creator><creator>Chilikin, K.</creator><creator>Cho, H.E.</creator><creator>Cho, S.-J.</creator><creator>Choi, Y.</creator><creator>Choudhury, S.</creator><creator>Dash, N.</creator><creator>De Pietro, G.</creator><creator>Dhamija, R.</creator><creator>Epifanov, D.</creator><creator>Garmash, A.</creator><creator>Goldenzweig, P.</creator><creator>Gong, G.</creator><creator>Graziani, E.</creator><creator>Gu, T.</creator><creator>Gudkova, K.</creator><creator>Hadjivasiliou, C.</creator><creator>Hayashii, H.</creator><creator>Inami, K.</creator><creator>Jacobs, W.W.</creator><creator>Jang, E.-J.</creator><creator>Ji, Q.P.</creator><creator>Joo, K.K.</creator><creator>Kim, C.H.</creator><creator>Kodyš, P.</creator><creator>Korpar, S.</creator><creator>Kumar, R.</creator><creator>Kumara, K.</creator><creator>Kwon, Y.-J.</creator><creator>Lee, S.C.</creator><creator>Li, J.</creator><creator>Li, S.X.</creator><creator>Libby, J.</creator><creator>Lieret, K.</creator><creator>Masuda, M.</creator><creator>Maurya, S.K.</creator><creator>Merola, M.</creator><creator>Metzner, F.</creator><creator>Miyabayashi, K.</creator><creator>Mussa, R.</creator><creator>Nakao, M.</creator><creator>Natochii, A.</creator><creator>Nayak, L.</creator><creator>Nayak, M.</creator><creator>Niiyama, M.</creator><creator>Ogawa, S.</creator><creator>Ono, H.</creator><creator>Pakhlova, G.</creator><creator>Pardi, S.</creator><creator>Paul, S.</creator><creator>Pedlar, T.K.</creator><creator>Pestotnik, R.</creator><creator>Podobnik, T.</creator><creator>Prencipe, E.</creator><creator>Prim, M.T.</creator><creator>Rostomyan, A.</creator><creator>Sahoo, D.</creator><creator>Sakai, Y.</creator><creator>Sandilya, S.</creator><creator>Schwanda, C.</creator><creator>Seino, Y.</creator><creator>Sharma, C.</creator><creator>Shen, C.P.</creator><creator>Singh, J.B.</creator><creator>Sokolov, A.</creator><creator>Solovieva, E.</creator><creator>Starič, M.</creator><creator>Sumiyoshi, T.</creator><creator>Sutcliffe, W.</creator><creator>Tamponi, U.</creator><creator>Tenchini, F.</creator><creator>Uchida, M.</creator><creator>Vahsen, S.E.</creator><creator>Vinokurova, A.</creator><creator>Watanabe, M.</creator><creator>Werbycka, O.</creator><creator>Yabsley, B.D.</creator><creator>Yelton, J.</creator><creator>Yin, J.H.</creator><creator>Yuan, C.Z.</creator><creator>Zhilich, V.</creator><general>Elsevier 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for CP violation and measurement of branching fractions and decay asymmetry parameters for Λc+→Λh+ and Λc+→Σ0h+ (h=K,π)</title><author>Kinoshita, K. ; Adachi, I. ; Aihara, H. ; Asner, D.M. ; Atmacan, H. ; Aushev, T. ; Bahinipati, S. ; Banerjee, Sw ; Bennett, J. ; Bhardwaj, V. ; Bhuyan, B. ; Bobrov, A. ; Bodrov, D. ; Borah, J. ; Bračko, M. ; Branchini, P. ; Budano, A. ; Chang, M.-C. ; Chekelian, V. ; Chen, A. ; Chilikin, K. ; Cho, H.E. ; Cho, S.-J. ; Choi, Y. ; Choudhury, S. ; Dash, N. ; De Pietro, G. ; Dhamija, R. ; Epifanov, D. ; Garmash, A. ; Goldenzweig, P. ; Gong, G. ; Graziani, E. ; Gu, T. ; Gudkova, K. ; Hadjivasiliou, C. ; Hayashii, H. ; Inami, K. ; Jacobs, W.W. ; Jang, E.-J. ; Ji, Q.P. ; Joo, K.K. ; Kim, C.H. ; Kodyš, P. ; Korpar, S. ; Kumar, R. ; Kumara, K. ; Kwon, Y.-J. ; Lee, S.C. ; Li, J. ; Li, S.X. ; Libby, J. ; Lieret, K. ; Masuda, M. ; Maurya, S.K. ; Merola, M. ; Metzner, F. ; Miyabayashi, K. ; Mussa, R. ; Nakao, M. ; Natochii, A. ; Nayak, L. ; Nayak, M. ; Niiyama, M. ; Ogawa, S. ; Ono, H. ; Pakhlova, G. ; Pardi, S. ; Paul, S. ; Pedlar, T.K. ; Pestotnik, R. ; Podobnik, T. ; Prencipe, E. ; Prim, M.T. ; Rostomyan, A. ; Sahoo, D. ; Sakai, Y. ; Sandilya, S. ; Schwanda, C. ; Seino, Y. ; Sharma, C. ; Shen, C.P. ; Singh, J.B. ; Sokolov, A. ; Solovieva, E. ; Starič, M. ; Sumiyoshi, T. ; Sutcliffe, W. ; Tamponi, U. ; Tenchini, F. ; Uchida, M. ; Vahsen, S.E. ; Vinokurova, A. ; Watanabe, M. ; Werbycka, O. ; Yabsley, B.D. ; Yelton, J. ; Yin, J.H. ; Yuan, C.Z. ; Zhilich, V.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-e171t-64901805a45bd3c4025202be4787e6d4733c976a616ced7aa91208bd8dd8231c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>[formula omitted] asymmetry</topic><topic>[formula omitted] violation</topic><topic>Branching fraction</topic><topic>Charmed baryon</topic><topic>Decay asymmetry parameter</topic><topic>Singly Cabibbo-suppressed decay</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kinoshita, K.</creatorcontrib><creatorcontrib>Adachi, I.</creatorcontrib><creatorcontrib>Aihara, H.</creatorcontrib><creatorcontrib>Asner, D.M.</creatorcontrib><creatorcontrib>Atmacan, H.</creatorcontrib><creatorcontrib>Aushev, T.</creatorcontrib><creatorcontrib>Bahinipati, S.</creatorcontrib><creatorcontrib>Banerjee, Sw</creatorcontrib><creatorcontrib>Bennett, J.</creatorcontrib><creatorcontrib>Bhardwaj, V.</creatorcontrib><creatorcontrib>Bhuyan, B.</creatorcontrib><creatorcontrib>Bobrov, A.</creatorcontrib><creatorcontrib>Bodrov, D.</creatorcontrib><creatorcontrib>Borah, J.</creatorcontrib><creatorcontrib>Bračko, M.</creatorcontrib><creatorcontrib>Branchini, P.</creatorcontrib><creatorcontrib>Budano, A.</creatorcontrib><creatorcontrib>Chang, M.-C.</creatorcontrib><creatorcontrib>Chekelian, V.</creatorcontrib><creatorcontrib>Chen, A.</creatorcontrib><creatorcontrib>Chilikin, K.</creatorcontrib><creatorcontrib>Cho, H.E.</creatorcontrib><creatorcontrib>Cho, S.-J.</creatorcontrib><creatorcontrib>Choi, Y.</creatorcontrib><creatorcontrib>Choudhury, S.</creatorcontrib><creatorcontrib>Dash, N.</creatorcontrib><creatorcontrib>De Pietro, G.</creatorcontrib><creatorcontrib>Dhamija, R.</creatorcontrib><creatorcontrib>Epifanov, D.</creatorcontrib><creatorcontrib>Garmash, A.</creatorcontrib><creatorcontrib>Goldenzweig, P.</creatorcontrib><creatorcontrib>Gong, G.</creatorcontrib><creatorcontrib>Graziani, E.</creatorcontrib><creatorcontrib>Gu, T.</creatorcontrib><creatorcontrib>Gudkova, K.</creatorcontrib><creatorcontrib>Hadjivasiliou, C.</creatorcontrib><creatorcontrib>Hayashii, H.</creatorcontrib><creatorcontrib>Inami, K.</creatorcontrib><creatorcontrib>Jacobs, W.W.</creatorcontrib><creatorcontrib>Jang, E.-J.</creatorcontrib><creatorcontrib>Ji, Q.P.</creatorcontrib><creatorcontrib>Joo, K.K.</creatorcontrib><creatorcontrib>Kim, C.H.</creatorcontrib><creatorcontrib>Kodyš, P.</creatorcontrib><creatorcontrib>Korpar, S.</creatorcontrib><creatorcontrib>Kumar, R.</creatorcontrib><creatorcontrib>Kumara, K.</creatorcontrib><creatorcontrib>Kwon, Y.-J.</creatorcontrib><creatorcontrib>Lee, S.C.</creatorcontrib><creatorcontrib>Li, J.</creatorcontrib><creatorcontrib>Li, S.X.</creatorcontrib><creatorcontrib>Libby, J.</creatorcontrib><creatorcontrib>Lieret, K.</creatorcontrib><creatorcontrib>Masuda, M.</creatorcontrib><creatorcontrib>Maurya, S.K.</creatorcontrib><creatorcontrib>Merola, M.</creatorcontrib><creatorcontrib>Metzner, F.</creatorcontrib><creatorcontrib>Miyabayashi, K.</creatorcontrib><creatorcontrib>Mussa, R.</creatorcontrib><creatorcontrib>Nakao, M.</creatorcontrib><creatorcontrib>Natochii, A.</creatorcontrib><creatorcontrib>Nayak, L.</creatorcontrib><creatorcontrib>Nayak, M.</creatorcontrib><creatorcontrib>Niiyama, M.</creatorcontrib><creatorcontrib>Ogawa, S.</creatorcontrib><creatorcontrib>Ono, H.</creatorcontrib><creatorcontrib>Pakhlova, G.</creatorcontrib><creatorcontrib>Pardi, S.</creatorcontrib><creatorcontrib>Paul, S.</creatorcontrib><creatorcontrib>Pedlar, T.K.</creatorcontrib><creatorcontrib>Pestotnik, R.</creatorcontrib><creatorcontrib>Podobnik, T.</creatorcontrib><creatorcontrib>Prencipe, E.</creatorcontrib><creatorcontrib>Prim, M.T.</creatorcontrib><creatorcontrib>Rostomyan, A.</creatorcontrib><creatorcontrib>Sahoo, D.</creatorcontrib><creatorcontrib>Sakai, Y.</creatorcontrib><creatorcontrib>Sandilya, S.</creatorcontrib><creatorcontrib>Schwanda, C.</creatorcontrib><creatorcontrib>Seino, Y.</creatorcontrib><creatorcontrib>Sharma, C.</creatorcontrib><creatorcontrib>Shen, C.P.</creatorcontrib><creatorcontrib>Singh, J.B.</creatorcontrib><creatorcontrib>Sokolov, A.</creatorcontrib><creatorcontrib>Solovieva, E.</creatorcontrib><creatorcontrib>Starič, M.</creatorcontrib><creatorcontrib>Sumiyoshi, T.</creatorcontrib><creatorcontrib>Sutcliffe, W.</creatorcontrib><creatorcontrib>Tamponi, U.</creatorcontrib><creatorcontrib>Tenchini, F.</creatorcontrib><creatorcontrib>Uchida, M.</creatorcontrib><creatorcontrib>Vahsen, S.E.</creatorcontrib><creatorcontrib>Vinokurova, A.</creatorcontrib><creatorcontrib>Watanabe, M.</creatorcontrib><creatorcontrib>Werbycka, O.</creatorcontrib><creatorcontrib>Yabsley, B.D.</creatorcontrib><creatorcontrib>Yelton, J.</creatorcontrib><creatorcontrib>Yin, J.H.</creatorcontrib><creatorcontrib>Yuan, C.Z.</creatorcontrib><creatorcontrib>Zhilich, V.</creatorcontrib><creatorcontrib>The Belle Collaboration</creatorcontrib><collection>MEDLINE - Academic</collection><jtitle>Science bulletin</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kinoshita, K.</au><au>Adachi, I.</au><au>Aihara, H.</au><au>Asner, D.M.</au><au>Atmacan, H.</au><au>Aushev, T.</au><au>Bahinipati, S.</au><au>Banerjee, Sw</au><au>Bennett, J.</au><au>Bhardwaj, V.</au><au>Bhuyan, B.</au><au>Bobrov, A.</au><au>Bodrov, D.</au><au>Borah, J.</au><au>Bračko, M.</au><au>Branchini, P.</au><au>Budano, A.</au><au>Chang, M.-C.</au><au>Chekelian, V.</au><au>Chen, A.</au><au>Chilikin, K.</au><au>Cho, H.E.</au><au>Cho, S.-J.</au><au>Choi, Y.</au><au>Choudhury, S.</au><au>Dash, N.</au><au>De Pietro, G.</au><au>Dhamija, R.</au><au>Epifanov, D.</au><au>Garmash, A.</au><au>Goldenzweig, P.</au><au>Gong, G.</au><au>Graziani, E.</au><au>Gu, T.</au><au>Gudkova, K.</au><au>Hadjivasiliou, C.</au><au>Hayashii, H.</au><au>Inami, K.</au><au>Jacobs, W.W.</au><au>Jang, E.-J.</au><au>Ji, Q.P.</au><au>Joo, K.K.</au><au>Kim, C.H.</au><au>Kodyš, P.</au><au>Korpar, S.</au><au>Kumar, R.</au><au>Kumara, K.</au><au>Kwon, Y.-J.</au><au>Lee, S.C.</au><au>Li, J.</au><au>Li, S.X.</au><au>Libby, J.</au><au>Lieret, K.</au><au>Masuda, M.</au><au>Maurya, S.K.</au><au>Merola, M.</au><au>Metzner, F.</au><au>Miyabayashi, K.</au><au>Mussa, R.</au><au>Nakao, M.</au><au>Natochii, A.</au><au>Nayak, L.</au><au>Nayak, M.</au><au>Niiyama, M.</au><au>Ogawa, S.</au><au>Ono, H.</au><au>Pakhlova, G.</au><au>Pardi, S.</au><au>Paul, S.</au><au>Pedlar, T.K.</au><au>Pestotnik, R.</au><au>Podobnik, T.</au><au>Prencipe, E.</au><au>Prim, M.T.</au><au>Rostomyan, A.</au><au>Sahoo, D.</au><au>Sakai, Y.</au><au>Sandilya, S.</au><au>Schwanda, C.</au><au>Seino, Y.</au><au>Sharma, C.</au><au>Shen, C.P.</au><au>Singh, J.B.</au><au>Sokolov, A.</au><au>Solovieva, E.</au><au>Starič, M.</au><au>Sumiyoshi, T.</au><au>Sutcliffe, W.</au><au>Tamponi, U.</au><au>Tenchini, F.</au><au>Uchida, M.</au><au>Vahsen, S.E.</au><au>Vinokurova, A.</au><au>Watanabe, M.</au><au>Werbycka, O.</au><au>Yabsley, B.D.</au><au>Yelton, J.</au><au>Yin, J.H.</au><au>Yuan, C.Z.</au><au>Zhilich, V.</au><aucorp>The Belle Collaboration</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Search for CP violation and measurement of branching fractions and decay asymmetry parameters for Λc+→Λh+ and Λc+→Σ0h+ (h=K,π)</atitle><jtitle>Science bulletin</jtitle><date>2023-03-30</date><risdate>2023</risdate><volume>68</volume><issue>6</issue><spage>583</spage><epage>592</epage><pages>583-592</pages><issn>2095-9273</issn><eissn>2095-9281</eissn><abstract>We report a study of Λc+→Λh+ and Λc+→Σ0h+ (h=K,π) decays based on a data sample of 980fb-1 collected with the Belle detector at the KEKB energy-asymmetric e+e- collider. The first results of direct CP asymmetry in two-body singly Cabibbo-suppressed (SCS) decays of charmed baryons are measured, ACPdir(Λc+→ΛK+)=+0.021±0.026±0.001 and ACPdir(Λc+→Σ0K+)=+0.025±0.054±0.004. We also make the most precise measurement of the decay asymmetry parameters (α) for the four modes of interest and search for CP violation via the α-induced CP asymmetry (ACPα). We measure ACPα(Λc+→ΛK+)=-0.023±0.086±0.071 and ACPα(Λc+→Σ0K+)=+0.08±0.35±0.14, which are the first ACPα results for SCS decays of charmed baryons. We search for Λ-hyperon CP violation in Λc+→(Λ,Σ0)π+ and find ACPα(Λ→pπ-)=+0.013±0.007±0.011. This is the first time that hyperon CP violation has been measured via Cabibbo-favored charm decays. No evidence of baryon CP violation is found. We also obtain the most precise branching fractions for two SCS Λc+ decays, B(Λc+→ΛK+)=(6.57±0.17±0.11±0.35)×10-4 and B(Λc+→Σ0K+)=(3.58±0.19±0.06±0.19)×10-4. The first uncertainties are statistical and the second systematic, while the third uncertainties come from the uncertainties on the world average branching fractions of Λc+→(Λ,Σ0)π+.</abstract><pub>Elsevier 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| fulltext | fulltext |
| identifier | ISSN: 2095-9273 |
| ispartof | Science bulletin, 2023-03, Vol.68 (6), p.583-592 |
| issn | 2095-9273 2095-9281 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_2786092754 |
| source | Alma/SFX Local Collection |
| subjects | [formula omitted] asymmetry [formula omitted] violation Branching fraction Charmed baryon Decay asymmetry parameter Singly Cabibbo-suppressed decay |
| title | Search for CP violation and measurement of branching fractions and decay asymmetry parameters for Λc+→Λh+ and Λc+→Σ0h+ (h=K,π) |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-29T01%3A49%3A53IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_elsev&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Search%20for%20CP%20violation%20and%20measurement%20of%20branching%20fractions%20and%20decay%20asymmetry%20parameters%20for%20%CE%9Bc+%E2%86%92%CE%9Bh+%20and%20%CE%9Bc+%E2%86%92%CE%A30h+%20(h=K,%CF%80)&rft.jtitle=Science%20bulletin&rft.au=Kinoshita,%20K.&rft.aucorp=The%20Belle%20Collaboration&rft.date=2023-03-30&rft.volume=68&rft.issue=6&rft.spage=583&rft.epage=592&rft.pages=583-592&rft.issn=2095-9273&rft.eissn=2095-9281&rft_id=info:doi/10.1016/j.scib.2023.02.017&rft_dat=%3Cproquest_elsev%3E2786092754%3C/proquest_elsev%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2786092754&rft_id=info:pmid/&rft_els_id=S2095927323001159&rfr_iscdi=true |