First Observation of the Doubly Cabibbo-Suppressed Decay of a Charmed Baryon:Λc+→pK+π−

Seongbae Yang,Kiyoshi Tanida,B. H. Kim,I. Adachi,H. Aihara,D. M. Asner,V. Aulchenko,T. Aushev,V. Babu,I. Badhrees,A. M. Bakich,E. Barberio,V. Bhardwaj,B. Bhuyan,J. Biswal,G. Bonvicini,A. Bozek,M. Bračko,T. E. Browder,Daniel Červenkov,V. Chekelian,A. Chen,B. G. Cheon,Kirill Chilikin,R. Chistov,K. Cho,V. Chobanova,Y. Choi,D. Cinabro,Jeremy Dalseno,Mikhail Danilov,N. Dash,Zdeněk Doležal,Z. Drásal,D. Dutta,S. Eidelman,H. Farhat,J. E. Fast,T. Ferber,B. G. Fulsom,N. Gabyshev,A. Garmash,V. Gaur,R. Gillard,Y. M. Goh,P. Goldenzweig,D. Greenwald,J. Grygier,J. Haba,P. Hamer,Takanori Hara,K. Hayasaka,H. Hayashii,W.-S. Hou,T. Iijima,K. Inami,Gianluca Inguglia,A. Ishikawa,R. Itoh,Y. Iwasaki,W. W. Jacobs,I. Jaegle,H. B. Jeon,K. K. Joo,T. Julius,K. H. Kang,E. Kato,P. Katrenko,C. Kiesling,D. Y. Kim,H. J. Kim,J. B. Kim,K. T. Kim,M. J. Kim,S. H. Kim,Y. J. Kim,K. Kinoshita,N. Kobayashi,Peter Kodyš,S. Korpar,Peter Križan,P. Krokovny,T. Kuhr,A. Kuzmin,Y.-J. Kwon,J. S. Lange,I. S. Lee,C. H. Li,H. Li,L. Li,Y. Li,L. Li Gioi,J. Libby,D. Liventsev,M. Lubej,M. Masuda,D. Matvienko,K. Miyabayashi,H. Miyata,R. Mizuk,G. B. Mohanty,A. Moll,H. K. Moon,R. Mussa,E. Nakano,M. Nakao,T. Nanut,K. J. Nath,M. Nayak,K. Negishi,M. Niiyama,N. K. Nisar,Shohei Nishida,S. Ogawa,S. Okuno,S. L. Olsen,Galina Pakhlova,B. Pal,C. W. Park,H. Park,T. K. Pedlar,R. Pestotnik,M. Petrič,L. E. Piilonen,C. Pulvermacher,J. Rauch,M. Ritter,Armine Rostomyan,S. Ryu,H. Sahoo,Y. Sakai,S. Sandilya,L. Santelj,T. Sanuki,Y. Sato,V. Savinov,T. Schlüter,O. Schneider,G. Schnell,C. Schwanda,A. J. Schwartz,Y. Seino,K. Senyo,O. Seon,I. S. Seong,Martin Sevior,V. Shebalin,T.-A. Shibata,J.-G. Shiu,B. Shwartz,Frank Simon,Y.-S. Sohn,A. Sokolov,S. Stanič,M. Starič,J. Stypula,M. Sumihama,T. Sumiyoshi,M. Takizawa,U. Tamponi,Y. Teramoto,Karim Trabelsi,V. Trusov,M. Uchida,T. Uglov,Y. Unno,S. Uno,Phillip Urquijo,Y. Usov,P. Vanhoefer,G. Varner,K. E. Varvell,A. Vinokurova,Anselm Vossen,M. N. Wagner,C. H. Wang,Min-Zu Wang,P. Wang,X. L. Wang,Y. Watanabe,K. M. Williams,E. Won,J. Yamaoka,S. Yashchenko,H. Ye,J. Yelton,Chang-Zheng Yuan,Y. Yusa,Z. P. Zhang,V. Zhilich,V. Zhulanov,A. Zupanc,Belle Collaboration,S. K. Kim; Seongbae Yang; Kiyoshi Tanida; B. H. Kim; I. Adachi; H. Aihara; D. M. Asner; V. Aulchenko; T. Aushev; V. Babu; I. Badhrees; A. M. Bakich; E. Barberio; V. Bhardwaj; B. Bhuyan; J. Biswal; G. Bonvicini; A. Bozek; M. Bračko; T. E. Browder; Daniel Červenkov; V. Chekelian; A. Chen; B. G. Cheon; Kirill Chilikin; R. Chistov; K. Cho; V. Chobanova; Y. Choi; D. Cinabro; Jeremy Dalseno; Mikhail Danilov; N. Dash; Zdeněk Doležal; Z. Drásal; D. Dutta; S. Eidelman; H. Farhat; J. E. Fast; T. Ferber; B. G. Fulsom; N. Gabyshev; A. Garmash; V. Gaur; R. Gillard; Y. M. Goh; P. Goldenzweig; D. Greenwald; J. Grygier; J. Haba; P. Hamer; Takanori Hara; K. Hayasaka; H. Hayashii; W.-S. Hou; T. Iijima; K. Inami; Gianluca Inguglia; A. Ishikawa; R. Itoh; Y. Iwasaki; W. W. Jacobs; I. Jaegle; H. B. Jeon; K. K. Joo; T. Julius; K. H. Kang; E. Kato; P. Katrenko; C. Kiesling; D. Y. Kim; H. J. Kim; J. B. Kim; K. T. Kim; M. J. Kim; S. H. Kim; Y. J. Kim; K. Kinoshita; N. Kobayashi; Peter Kodyš; S. Korpar; Peter Križan; P. Krokovny; T. Kuhr; A. Kuzmin; Y.-J. Kwon; J. S. Lange; I. S. Lee; C. H. Li; H. Li; L. Li; Y. Li; L. Li Gioi; J. Libby; D. Liventsev; M. Lubej; M. Masuda; D. Matvienko; K. Miyabayashi; H. Miyata; R. Mizuk; G. B. Mohanty; A. Moll; H. K. Moon; R. Mussa; E. Nakano; M. Nakao; T. Nanut; K. J. Nath; M. Nayak; K. Negishi; M. Niiyama; N. K. Nisar; Shohei Nishida; S. Ogawa; S. Okuno; S. L. Olsen; Galina Pakhlova; B. Pal; C. W. Park; H. Park; T. K. Pedlar; R. Pestotnik; M. Petrič; L. E. Piilonen; C. Pulvermacher; J. Rauch; M. Ritter; Armine Rostomyan; S. Ryu; H. Sahoo; Y. Sakai; S. Sandilya; L. Santelj; T. Sanuki; Y. Sato; V. Savinov; T. Schlüter; O. Schneider; G. Schnell; C. Schwanda; A. J. Schwartz; Y. Seino; K. Senyo; O. Seon; I. S. Seong; Martin Sevior; V. Shebalin; T.-A. Shibata; J.-G. Shiu; B. Shwartz; Frank Simon; Y.-S. Sohn; A. Sokolov; S. Stanič; M. Starič; J. Stypula; M. Sumihama; T. Sumiyoshi; M. Takizawa; U. Tamponi; Y. Teramoto; Karim Trabelsi; V. Trusov; M. Uchida; T. Uglov; Y. Unno; S. Uno; Phillip Urquijo; Y. Usov; P. Vanhoefer; G. Varner; K. E. Varvell; A. Vinokurova; Anselm Vossen; M. N. Wagner; C. H. Wang; Min-Zu Wang; P. Wang; X. L. Wang; Y. Watanabe; K. M. Williams; E. Won; J. Yamaoka; S. Yashchenko; H. Ye; J. Yelton; Chang-Zheng Yuan; Y. Yusa; Z. P. Zhang; V. Zhilich; V. Zhulanov; A. Zupanc; Belle Collaboration; S. K. Kim

First Observation of the Doubly Cabibbo-Suppressed Decay of a Charmed Baryon:Λc+→pK+π−

Clicks: 148

ID: 272165

2016

We report the first observation of the decay Λc+→pK+π− using a 980 fb−1 data sample collected by the Belle detector at the KEKB asymmetric-energy e+e− collider. This is the first observation of a doubly Cabibbo-suppressed decay of a charmed baryon. We measure the branching ratio of this decay with respect to its Cabibbo-favored counterpart to be B(Λc+→pK+π−)/B(Λc+→pK−π+)=(2.35±0.27±0.21)×10−3, where the uncertainties are statistical and systematic, respectively.

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Authors	Seongbae Yang,Kiyoshi Tanida,B. H. Kim,I. Adachi,H. Aihara,D. M. Asner,V. Aulchenko,T. Aushev,V. Babu,I. Badhrees,A. M. Bakich,E. Barberio,V. Bhardwaj,B. Bhuyan,J. Biswal,G. Bonvicini,A. Bozek,M. Bračko,T. E. Browder,Daniel Červenkov,V. Chekelian,A. Chen,B. G. Cheon,Kirill Chilikin,R. Chistov,K. Cho,V. Chobanova,Y. Choi,D. Cinabro,Jeremy Dalseno,Mikhail Danilov,N. Dash,Zdeněk Doležal,Z. Drásal,D. Dutta,S. Eidelman,H. Farhat,J. E. Fast,T. Ferber,B. G. Fulsom,N. Gabyshev,A. Garmash,V. Gaur,R. Gillard,Y. M. Goh,P. Goldenzweig,D. Greenwald,J. Grygier,J. Haba,P. Hamer,Takanori Hara,K. Hayasaka,H. Hayashii,W.-S. Hou,T. Iijima,K. Inami,Gianluca Inguglia,A. Ishikawa,R. Itoh,Y. Iwasaki,W. W. Jacobs,I. Jaegle,H. B. Jeon,K. K. Joo,T. Julius,K. H. Kang,E. Kato,P. Katrenko,C. Kiesling,D. Y. Kim,H. J. Kim,J. B. Kim,K. T. Kim,M. J. Kim,S. H. Kim,Y. J. Kim,K. Kinoshita,N. Kobayashi,Peter Kodyš,S. Korpar,Peter Križan,P. Krokovny,T. Kuhr,A. Kuzmin,Y.-J. Kwon,J. S. Lange,I. S. Lee,C. H. Li,H. Li,L. Li,Y. Li,L. Li Gioi,J. Libby,D. Liventsev,M. Lubej,M. Masuda,D. Matvienko,K. Miyabayashi,H. Miyata,R. Mizuk,G. B. Mohanty,A. Moll,H. K. Moon,R. Mussa,E. Nakano,M. Nakao,T. Nanut,K. J. Nath,M. Nayak,K. Negishi,M. Niiyama,N. K. Nisar,Shohei Nishida,S. Ogawa,S. Okuno,S. L. Olsen,Galina Pakhlova,B. Pal,C. W. Park,H. Park,T. K. Pedlar,R. Pestotnik,M. Petrič,L. E. Piilonen,C. Pulvermacher,J. Rauch,M. Ritter,Armine Rostomyan,S. Ryu,H. Sahoo,Y. Sakai,S. Sandilya,L. Santelj,T. Sanuki,Y. Sato,V. Savinov,T. Schlüter,O. Schneider,G. Schnell,C. Schwanda,A. J. Schwartz,Y. Seino,K. Senyo,O. Seon,I. S. Seong,Martin Sevior,V. Shebalin,T.-A. Shibata,J.-G. Shiu,B. Shwartz,Frank Simon,Y.-S. Sohn,A. Sokolov,S. Stanič,M. Starič,J. Stypula,M. Sumihama,T. Sumiyoshi,M. Takizawa,U. Tamponi,Y. Teramoto,Karim Trabelsi,V. Trusov,M. Uchida,T. Uglov,Y. Unno,S. Uno,Phillip Urquijo,Y. Usov,P. Vanhoefer,G. Varner,K. E. Varvell,A. Vinokurova,Anselm Vossen,M. N. Wagner,C. H. Wang,Min-Zu Wang,P. Wang,X. L. Wang,Y. Watanabe,K. M. Williams,E. Won,J. Yamaoka,S. Yashchenko,H. Ye,J. Yelton,Chang-Zheng Yuan,Y. Yusa,Z. P. Zhang,V. Zhilich,V. Zhulanov,A. Zupanc,Belle Collaboration,S. K. Kim;Seongbae Yang;Kiyoshi Tanida;B. H. Kim;I. Adachi;H. Aihara;D. M. Asner;V. Aulchenko;T. Aushev;V. Babu;I. Badhrees;A. M. Bakich;E. Barberio;V. Bhardwaj;B. Bhuyan;J. Biswal;G. Bonvicini;A. Bozek;M. Bračko;T. E. Browder;Daniel Červenkov;V. Chekelian;A. Chen;B. G. Cheon;Kirill Chilikin;R. Chistov;K. Cho;V. Chobanova;Y. Choi;D. Cinabro;Jeremy Dalseno;Mikhail Danilov;N. Dash;Zdeněk Doležal;Z. Drásal;D. Dutta;S. Eidelman;H. Farhat;J. E. Fast;T. Ferber;B. G. Fulsom;N. Gabyshev;A. Garmash;V. Gaur;R. Gillard;Y. M. Goh;P. Goldenzweig;D. Greenwald;J. Grygier;J. Haba;P. Hamer;Takanori Hara;K. Hayasaka;H. Hayashii;W.-S. Hou;T. Iijima;K. Inami;Gianluca Inguglia;A. Ishikawa;R. Itoh;Y. Iwasaki;W. W. Jacobs;I. Jaegle;H. B. Jeon;K. K. Joo;T. Julius;K. H. Kang;E. Kato;P. Katrenko;C. Kiesling;D. Y. Kim;H. J. Kim;J. B. Kim;K. T. Kim;M. J. Kim;S. H. Kim;Y. J. Kim;K. Kinoshita;N. Kobayashi;Peter Kodyš;S. Korpar;Peter Križan;P. Krokovny;T. Kuhr;A. Kuzmin;Y.-J. Kwon;J. S. Lange;I. S. Lee;C. H. Li;H. Li;L. Li;Y. Li;L. Li Gioi;J. Libby;D. Liventsev;M. Lubej;M. Masuda;D. Matvienko;K. Miyabayashi;H. Miyata;R. Mizuk;G. B. Mohanty;A. Moll;H. K. Moon;R. Mussa;E. Nakano;M. Nakao;T. Nanut;K. J. Nath;M. Nayak;K. Negishi;M. Niiyama;N. K. Nisar;Shohei Nishida;S. Ogawa;S. Okuno;S. L. Olsen;Galina Pakhlova;B. Pal;C. W. Park;H. Park;T. K. Pedlar;R. Pestotnik;M. Petrič;L. E. Piilonen;C. Pulvermacher;J. Rauch;M. Ritter;Armine Rostomyan;S. Ryu;H. Sahoo;Y. Sakai;S. Sandilya;L. Santelj;T. Sanuki;Y. Sato;V. Savinov;T. Schlüter;O. Schneider;G. Schnell;C. Schwanda;A. J. Schwartz;Y. Seino;K. Senyo;O. Seon;I. S. Seong;Martin Sevior;V. Shebalin;T.-A. Shibata;J.-G. Shiu;B. Shwartz;Frank Simon;Y.-S. Sohn;A. Sokolov;S. Stanič;M. Starič;J. Stypula;M. Sumihama;T. Sumiyoshi;M. Takizawa;U. Tamponi;Y. Teramoto;Karim Trabelsi;V. Trusov;M. Uchida;T. Uglov;Y. Unno;S. Uno;Phillip Urquijo;Y. Usov;P. Vanhoefer;G. Varner;K. E. Varvell;A. Vinokurova;Anselm Vossen;M. N. Wagner;C. H. Wang;Min-Zu Wang;P. Wang;X. L. Wang;Y. Watanabe;K. M. Williams;E. Won;J. Yamaoka;S. Yashchenko;H. Ye;J. Yelton;Chang-Zheng Yuan;Y. Yusa;Z. P. Zhang;V. Zhilich;V. Zhulanov;A. Zupanc;Belle Collaboration;S. K. Kim;
Journal	physical review letters
Year	2016
DOI	10.1103/physrevlett.117.011801
URL	https://sciprofiles.com/publication/view/b72189cd3ffba722fff65f11a68d6af6 https://doi.org/10.1103/physrevlett.117.011801
Keywords	uncertainties decay http american physical data sample cabibbo suppressed

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