Evidence for theηb(2S)and Observation ofhb(1P)→ηb(1S)γandhb(2P)→ηb(1S)γ

R. Mizuk,D. M. Asner,A. Bondar,T. K. Pedlar,I. Adachi,H. Aihara,K. Arinstein,V. Aulchenko,T. Aushev,T. Aziz,A. M. Bakich,A. Bay,K. Belous,V. Bhardwaj,B. Bhuyan,M. Bischofberger,G. Bonvicini,A. Bozek,M. Bracko,J. Brodzicka,T. E. Browder,V. Chekelian,A. Chen,P. Chen,B. G. Cheon,Kirill Chilikin,R. Chistov,I.-S. Cho,K. Cho,S.-K. Choi,Y. Choi,J. Dalseno,Mikhail Danilov,Zdeněk Doležal,Z. Drásal,A. Drutskoy,S. Eidelman,D. Epifanov,J. E. Fast,V. Gaur,N. Gabyshev,A. Garmash,B. Golob,J. Haba,Takanori Hara,K. Hayasaka,H. Hayashii,Y. Horii,Y. Hoshi,W.-S. Hou,Y. B. Hsiung,H. J. Hyun,T. Iijima,Akimasa Ishikawa,R. Itoh,M. Iwabuchi,Y. Iwasaki,T. Iwashita,I. Jaegle,T. Julius,J. H. Kang,P. Kapusta,T. Kawasaki,H. J. Kim,H. O. Kim,J. H. Kim,K. T. Kim,M. J. Kim,Y. J. Kim,K. Kinoshita,B. R. Ko,S. Koblitz,Peter Kodyš,S. Korpar,R. T. Kouzes,Peter Križan,Pavel Krokovny,T. Kuhr,T. Kumita,A. Kuzmin,Y.-J. Kwon,J. S. Lange,S.-H. Lee,J. Li,J. Libby,C. Liu,Y. Liu,Z. Q. Liu,D. Liventsev,R. Louvot,D. Matvienko,S. McOnie,K. Miyabayashi,H. Miyata,G. B. Mohanty,D. Mohapatra,A. Moll,N. Muramatsu,Roberto Mussa,M. Nakao,Z. Natkaniec,C. Ng,Shohei Nishida,K. Nishimura,O. Nitoh,T. Nozaki,T. Ohshima,S. Okuno,S. L. Olsen,Y. Ōnuki,Pavel Pakhlov,Galina Pakhlova,C. W. Park,H. Park,R. Pestotnik,M. Petric,L. E. Piilonen,A. Poluektov,M. Röhrken,Y. Sakai,S. Sandilya,D. Santel,T. Sanuki,Y. Sato,O. Schneider,C. Schwanda,K. Senyo,O. Seon,Martin Sevior,M. Shapkin,C. P. Shen,T.-A. Shibata,J.-G. Shiu,B. Shwartz,A. Sibidanov,Frank Simon,P. Smerkol,Y.-S. Sohn,A. Sokolov,Elena Solovieva,S. Stanič,M. Starič,M. Sumihama,T. Sumiyoshi,Kiyoshi Tanida,G. Tatishvili,Y. Teramoto,I. Tikhomirov,Karim Trabelsi,T. Tsuboyama,M. Uchida,S. Uehara,T. Uglov,Y. Unno,S. Uno,P. Vanhoefer,G. Varner,K. E. Varvell,A. Vinokurova,V. Vorobyev,C. H. Wang,Min-Zu Wang,P. Wang,X. L. Wang,M. Watanabè,Y. Watanabe,K. M. Williams,E. Won,B. D. Yabsley,J. Yamaoka,Y. Yamashita,Chang-Zheng Yuan,Z. P. Zhang,V. Zhilich,Belle Collaboration; R. Mizuk; D. M. Asner; A. Bondar; T. K. Pedlar; I. Adachi; H. Aihara; K. Arinstein; V. Aulchenko; T. Aushev; T. Aziz; A. M. Bakich; A. Bay; K. Belous; V. Bhardwaj; B. Bhuyan; M. Bischofberger; G. Bonvicini; A. Bozek; M. Bracko; J. Brodzicka; T. E. Browder; V. Chekelian; A. Chen; P. Chen; B. G. Cheon; Kirill Chilikin; R. Chistov; I.-S. Cho; K. Cho; S.-K. Choi; Y. Choi; J. Dalseno; Mikhail Danilov; Zdeněk Doležal; Z. Drásal; A. Drutskoy; S. Eidelman; D. Epifanov; J. E. Fast; V. Gaur; N. Gabyshev; A. Garmash; B. Golob; J. Haba; Takanori Hara; K. Hayasaka; H. Hayashii; Y. Horii; Y. Hoshi; W.-S. Hou; Y. B. Hsiung; H. J. Hyun; T. Iijima; Akimasa Ishikawa; R. Itoh; M. Iwabuchi; Y. Iwasaki; T. Iwashita; I. Jaegle; T. Julius; J. H. Kang; P. Kapusta; T. Kawasaki; H. J. Kim; H. O. Kim; J. H. Kim; K. T. Kim; M. J. Kim; Y. J. Kim; K. Kinoshita; B. R. Ko; S. Koblitz; Peter Kodyš; S. Korpar; R. T. Kouzes; Peter Križan; Pavel Krokovny; T. Kuhr; T. Kumita; A. Kuzmin; Y.-J. Kwon; J. S. Lange; S.-H. Lee; J. Li; J. Libby; C. Liu; Y. Liu; Z. Q. Liu; D. Liventsev; R. Louvot; D. Matvienko; S. McOnie; K. Miyabayashi; H. Miyata; G. B. Mohanty; D. Mohapatra; A. Moll; N. Muramatsu; Roberto Mussa; M. Nakao; Z. Natkaniec; C. Ng; Shohei Nishida; K. Nishimura; O. Nitoh; T. Nozaki; T. Ohshima; S. Okuno; S. L. Olsen; Y. Ōnuki; Pavel Pakhlov; Galina Pakhlova; C. W. Park; H. Park; R. Pestotnik; M. Petric; L. E. Piilonen; A. Poluektov; M. Röhrken; Y. Sakai; S. Sandilya; D. Santel; T. Sanuki; Y. Sato; O. Schneider; C. Schwanda; K. Senyo; O. Seon; Martin Sevior; M. Shapkin; C. P. Shen; T.-A. Shibata; J.-G. Shiu; B. Shwartz; A. Sibidanov; Frank Simon; P. Smerkol; Y.-S. Sohn; A. Sokolov; Elena Solovieva; S. Stanič; M. Starič; M. Sumihama; T. Sumiyoshi; Kiyoshi Tanida; G. Tatishvili; Y. Teramoto; I. Tikhomirov; Karim Trabelsi; T. Tsuboyama; M. Uchida; S. Uehara; T. Uglov; Y. Unno; S. Uno; P. Vanhoefer; G. Varner; K. E. Varvell; A. Vinokurova; V. Vorobyev; C. H. Wang; Min-Zu Wang; P. Wang; X. L. Wang; M. Watanabè; Y. Watanabe; K. M. Williams; E. Won; B. D. Yabsley; J. Yamaoka; Y. Yamashita; Chang-Zheng Yuan; Z. P. Zhang; V. Zhilich; Belle Collaboration

Evidence for theηb(2S)and Observation ofhb(1P)→ηb(1S)γandhb(2P)→ηb(1S)γ

R. Mizuk,D. M. Asner,A. Bondar,T. K. Pedlar,I. Adachi,H. Aihara,K. Arinstein,V. Aulchenko,T. Aushev,T. Aziz,A. M. Bakich,A. Bay,K. Belous,V. Bhardwaj,B. Bhuyan,M. Bischofberger,G. Bonvicini,A. Bozek,M. Bracko,J. Brodzicka,T. E. Browder,V. Chekelian,A. Chen,P. Chen,B. G. Cheon,Kirill Chilikin,R. Chistov,I.-S. Cho,K. Cho,S.-K. Choi,Y. Choi,J. Dalseno,Mikhail Danilov,Zdeněk Doležal,Z. Drásal,A. Drutskoy,S. Eidelman,D. Epifanov,J. E. Fast,V. Gaur,N. Gabyshev,A. Garmash,B. Golob,J. Haba,Takanori Hara,K. Hayasaka,H. Hayashii,Y. Horii,Y. Hoshi,W.-S. Hou,Y. B. Hsiung,H. J. Hyun,T. Iijima,Akimasa Ishikawa,R. Itoh,M. Iwabuchi,Y. Iwasaki,T. Iwashita,I. Jaegle,T. Julius,J. H. Kang,P. Kapusta,T. Kawasaki,H. J. Kim,H. O. Kim,J. H. Kim,K. T. Kim,M. J. Kim,Y. J. Kim,K. Kinoshita,B. R. Ko,S. Koblitz,Peter Kodyš,S. Korpar,R. T. Kouzes,Peter Križan,Pavel Krokovny,T. Kuhr,T. Kumita,A. Kuzmin,Y.-J. Kwon,J. S. Lange,S.-H. Lee,J. Li,J. Libby,C. Liu,Y. Liu,Z. Q. Liu,D. Liventsev,R. Louvot,D. Matvienko,S. McOnie,K. Miyabayashi,H. Miyata,G. B. Mohanty,D. Mohapatra,A. Moll,N. Muramatsu,Roberto Mussa,M. Nakao,Z. Natkaniec,C. Ng,Shohei Nishida,K. Nishimura,O. Nitoh,T. Nozaki,T. Ohshima,S. Okuno,S. L. Olsen,Y. Ōnuki,Pavel Pakhlov,Galina Pakhlova,C. W. Park,H. Park,R. Pestotnik,M. Petric,L. E. Piilonen,A. Poluektov,M. Röhrken,Y. Sakai,S. Sandilya,D. Santel,T. Sanuki,Y. Sato,O. Schneider,C. Schwanda,K. Senyo,O. Seon,Martin Sevior,M. Shapkin,C. P. Shen,T.-A. Shibata,J.-G. Shiu,B. Shwartz,A. Sibidanov,Frank Simon,P. Smerkol,Y.-S. Sohn,A. Sokolov,Elena Solovieva,S. Stanič,M. Starič,M. Sumihama,T. Sumiyoshi,Kiyoshi Tanida,G. Tatishvili,Y. Teramoto,I. Tikhomirov,Karim Trabelsi,T. Tsuboyama,M. Uchida,S. Uehara,T. Uglov,Y. Unno,S. Uno,P. Vanhoefer,G. Varner,K. E. Varvell,A. Vinokurova,V. Vorobyev,C. H. Wang,Min-Zu Wang,P. Wang,X. L. Wang,M. Watanabè,Y. Watanabe,K. M. Williams,E. Won,B. D. Yabsley,J. Yamaoka,Y. Yamashita,Chang-Zheng Yuan,Z. P. Zhang,V. Zhilich,Belle Collaboration;R. Mizuk;D. M. Asner;A. Bondar;T. K. Pedlar;I. Adachi;H. Aihara;K. Arinstein;V. Aulchenko;T. Aushev;T. Aziz;A. M. Bakich;A. Bay;K. Belous;V. Bhardwaj;B. Bhuyan;M. Bischofberger;G. Bonvicini;A. Bozek;M. Bracko;J. Brodzicka;T. E. Browder;V. Chekelian;A. Chen;P. Chen;B. G. Cheon;Kirill Chilikin;R. Chistov;I.-S. Cho;K. Cho;S.-K. Choi;Y. Choi;J. Dalseno;Mikhail Danilov;Zdeněk Doležal;Z. Drásal;A. Drutskoy;S. Eidelman;D. Epifanov;J. E. Fast;V. Gaur;N. Gabyshev;A. Garmash;B. Golob;J. Haba;Takanori Hara;K. Hayasaka;H. Hayashii;Y. Horii;Y. Hoshi;W.-S. Hou;Y. B. Hsiung;H. J. Hyun;T. Iijima;Akimasa Ishikawa;R. Itoh;M. Iwabuchi;Y. Iwasaki;T. Iwashita;I. Jaegle;T. Julius;J. H. Kang;P. Kapusta;T. Kawasaki;H. J. Kim;H. O. Kim;J. H. Kim;K. T. Kim;M. J. Kim;Y. J. Kim;K. Kinoshita;B. R. Ko;S. Koblitz;Peter Kodyš;S. Korpar;R. T. Kouzes;Peter Križan;Pavel Krokovny;T. Kuhr;T. Kumita;A. Kuzmin;Y.-J. Kwon;J. S. Lange;S.-H. Lee;J. Li;J. Libby;C. Liu;Y. Liu;Z. Q. Liu;D. Liventsev;R. Louvot;D. Matvienko;S. McOnie;K. Miyabayashi;H. Miyata;G. B. Mohanty;D. Mohapatra;A. Moll;N. Muramatsu;Roberto Mussa;M. Nakao;Z. Natkaniec;C. Ng;Shohei Nishida;K. Nishimura;O. Nitoh;T. Nozaki;T. Ohshima;S. Okuno;S. L. Olsen;Y. Ōnuki;Pavel Pakhlov;Galina Pakhlova;C. W. Park;H. Park;R. Pestotnik;M. Petric;L. E. Piilonen;A. Poluektov;M. Röhrken;Y. Sakai;S. Sandilya;D. Santel;T. Sanuki;Y. Sato;O. Schneider;C. Schwanda;K. Senyo;O. Seon;Martin Sevior;M. Shapkin;C. P. Shen;T.-A. Shibata;J.-G. Shiu;B. Shwartz;A. Sibidanov;Frank Simon;P. Smerkol;Y.-S. Sohn;A. Sokolov;Elena Solovieva;S. Stanič;M. Starič;M. Sumihama;T. Sumiyoshi;Kiyoshi Tanida;G. Tatishvili;Y. Teramoto;I. Tikhomirov;Karim Trabelsi;T. Tsuboyama;M. Uchida;S. Uehara;T. Uglov;Y. Unno;S. Uno;P. Vanhoefer;G. Varner;K. E. Varvell;A. Vinokurova;V. Vorobyev;C. H. Wang;Min-Zu Wang;P. Wang;X. L. Wang;M. Watanabè;Y. Watanabe;K. M. Williams;E. Won;B. D. Yabsley;J. Yamaoka;Y. Yamashita;Chang-Zheng Yuan;Z. P. Zhang;V. Zhilich;Belle Collaboration;

physical review letters 2012 Vol. 109 pp. 232002-

79

collaboration2012physicalevidence

Abstract

We report the first evidence for the ηb(2S) using the hb(2P)→ηb(2S)γ transition and the first observation of the hb(1P)→ηb(1S)γ and hb(2P)→ηb(1S)γ transitions. The mass and width of the ηb(1S) and ηb(2S) are measured to be mηb(1S)=(9402.4±1.5±1.8) MeV/c2, mηb(2S)=(9999.0±3.5−1.9+2.8) MeV/c2, and Γηb(1S)=(10.8−3.7−2.0+4.0+4.5) MeV. We also update the hb(1P) and hb(2P) mass measurements. We use a 133.4 fb−1 data sample collected at energies near the Υ(5S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider.

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data sample mev/c

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10.1103/physrevlett.109.232002

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