首页|Measurements of branching fractions and asymmetry parameters of $\Xi^0_c\to \Lambda\bar K^{*0}$, $\Xi^0_c\to \Sigma^0\bar K^{*0}$, and $\Xi^0_c\to \Sigma^+K^{*-}$ decays at Belle

Measurements of branching fractions and asymmetry parameters of $\Xi^0_c\to \Lambda\bar K^{0}$, $\Xi^0_c\to \Sigma^0\bar K^{0}$, and $\Xi^0_c\to \Sigma^+K^{*-}$ decays at Belle

来源：

Arxiv

英文摘要

Using a data sample of 980 fb$^{-1}$ collected with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider, we study the processes of $\Xi^0_c\to \Lambda\bar K^{*0}$, $\Xi^0_c\to \Sigma^0\bar K^{*0}$, and $\Xi^0_c\to \Sigma^+K^{*-}$ for the first time. The relative branching ratios to the normalization mode of $\Xi^0_c\to\Xi^-\pi^+$ are measured to be $${\cal B}(\Xi^0_c\to \Lambda\bar K^{*0})/{\cal B}(\xic\to \Xi^-\pi^+)=0.18\pm0.02({\rm stat.})\pm0.01({\rm syst.}),$$ $${\cal B}(\Xi^0_c\to \Sigma^0\bar K^{*0})/{\cal B}(\xic\to \Xi^-\pi^+)=0.69\pm0.03({\rm stat.})\pm0.03({\rm syst.}),$$ $${\cal B}(\Xi^0_c\to \Sigma^+K^{*-})/{\cal B}(\xic\to \Xi^-\pi^+)=0.34\pm0.06({\rm stat.})\pm0.02({\rm syst.}),$$ where the uncertainties are statistical and systematic, respectively. We obtain %measure the branching fractions of $\Xi^0_c\to \Lambda\bar K^{*0}$, $\Xi^0_c\to \Sigma^0\bar K^{*0}$, and $\Xi^0_c\to \Sigma^+K^{*-}$ to be $${\cal B}(\Xi^0_c\to \Lambda\bar K^{*0})=(3.3\pm0.3({\rm stat.})\pm0.2({\rm syst.})\pm1.0({\rm ref.}))\times10^{-3},$$ $${\cal B}(\Xi^0_c\to \Sigma^0\bar K^{*0})=(12.4\pm0.5({\rm stat.})\pm0.5({\rm syst.})\pm3.6({\rm ref.}))\times10^{-3},$$ $${\cal B}(\Xi^0_c\to \Sigma^+K^{*-})=(6.1\pm1.0({\rm stat.})\pm0.4({\rm syst.})\pm1.8({\rm ref.}))\times10^{-3},$$ where the uncertainties are statistical, systematic, and from ${\cal B}(\xic \to \Xi^-\pi^+)$, respectively. The asymmetry parameters $\alpha(\Xi^0_c\to \Lambda\bar K^{*0})$ and $\alpha(\Xi^0_c\to \Sigma^+K^{*-})$ are $0.15\pm0.22({\rm stat.})\pm0.04({\rm syst.})$ and $-0.52\pm0.30({\rm stat.})\pm0.02({\rm syst.})$, respectively, where the uncertainties are statistical followed by systematic.

作者：A. Ishikawa、N. Rout、N. K. Nisar、T. Podobnik、L. K. Li、G. Karyan、M. Nakao、C. H. Wang、C. -L. Hsu、C. Z. Yuan、H. Miyata、Y. -J. Kwon、Z. P. Zhang、S. Ogawa、T. Kuhr、Y. Jin、M. E. Sevior、P. Goldenzweig、M. Iwasaki、K. -H. Kim、K. Chilikin、M. Sumihama、P. Krizan、A. Korobov、K. Flood、M. -C. Chang、M. Masuda、D. Sahoo、V. Aulchenko、S. Korpar、D. Cervenkov、P. Behera、Y. Onuki、S. Sandilya、H. Hayashii、E. Solovieva、S. H. Kim、S. Das、M. Staric、I. Adachi、W. Yan、A. Bobrov、K. Senyo、S. C. Lee、B. G. Fulsom、O. Hartbrich、J. Yelton、G. Varner、K. Trabelsi、K. Kinoshita、A. Kuzmin、Y. -K. Kim、E. Prencipe、V. Savinov、R. Ayad、S. -K. Choi、L. E. Piilonen、A. Natochii、K. Hayasaka、S. Uehara、T. Iijima、L. Li Gioi、N. Gabyshev、M. Niiyama、M. Bessner、E. Kovalenko、B. D. Yabsley、S. Pardi、S. Patra、J. Bennett、H. Kichimi、S. -H. Park、Y. Usov、T. E. Browder、Y. Choi、A. Garmash、Y. Kato、T. V. Dong、V. Zhilich、S. Uno、Y. Seino、D. Y. Kim、J. H. Yin、A. Rostomyan、D. M. Asner、R. Van Tonder、A. Chen、H. Ye、P. Kodys、J. S. Lange、R. Pestotnik、K. Inami、M. Campajola、G. Bonvicini、T. Sumiyoshi、P. Urquijo、V. Gaur、D. Cinabro、K. Nishimura、T. Matsuda、M. Nayak、D. Matvienko、S. Paul、J. -G. Shiu、V. Chekelian、R. Kroeger、F. Tenchini、V. Zhukova、S. Choudhury、J. T. McNeil、J. Li、R. Itoh、R. Garg、P. Oskin、A. Sokolov、M. Bracko、K. Cho、D. Liventsev、S. Bahinipati、K. Miyabayashi、T. Uglov、F. Di Capua、O. Grzymkowska、P. Krokovny、M. Takizawa、D. Epifanov、M. Watanabe、K. Uno、Z. Dolezal、R. Mussa、G. De Nardo、H. Aihara、L. Nayak、H. Park、C. Sharma、S. Cunliffe、Y. Unno、C. MacQueen、T. Ferber、K. K. Joo、K. Ogawa、Y. Yusa、M. T. Prim、B. G. Cheon、C. P. Shen、S. Eidelman、G. Schnell、G. Russo、S. B. Yang、W. W. Jacobs、W. -S. Hou、T. Bilka、A. Bozek、Y. Iwasaki、R. Mizuk、S. S. Tang、C. Schwanda、P. Wang、K. Lalwani、Z. S. Stottler、K. Kumara、G. B. Mohanty、A. Sangal、T. Aushev、R. Dhamija、H. E. Cho、P. Pakhlov、Y. B. Li、S. -J. Cho、J. Biswal、E. Waheed、E. Won、F. Metzner、A. Giri、G. Pakhlova、J. Libby、M. -Z. Wang、K. Lieret、K. Tanida、V. Babu、V. Popov、S. Nishida、C. H. Kim、Belle Collaboration、H. Ono、S. Jia、S. Al Said、M. Merola、T. Konno

作者单位：

DOI：10.1007/JHEP06(2021)160

学科分类：粒子探测技术、辐射探测技术、核仪器仪表物理学

推荐引用：A. Ishikawa,N. Rout,N. K. Nisar,T. Podobnik,L. K. Li,G. Karyan,M. Nakao,C. H. Wang,C. -L. Hsu,C. Z. Yuan,H. Miyata,Y. -J. Kwon,Z. P. Zhang,S. Ogawa,T. Kuhr,Y. Jin,M. E. Sevior,P. Goldenzweig,M. Iwasaki,K. -H. Kim,K. Chilikin,M. Sumihama,P. Krizan,A. Korobov,K. Flood,M. -C. Chang,M. Masuda,D. Sahoo,V. Aulchenko,S. Korpar,D. Cervenkov,P. Behera,Y. Onuki,S. Sandilya,H. Hayashii,E. Solovieva,S. H. Kim,S. Das,M. Staric,I. Adachi,W. Yan,A. Bobrov,K. Senyo,S. C. Lee,B. G. Fulsom,O. Hartbrich,J. Yelton,G. Varner,K. Trabelsi,K. Kinoshita,A. Kuzmin,Y. -K. Kim,E. Prencipe,V. Savinov,R. Ayad,S. -K. Choi,L. E. Piilonen,A. Natochii,K. Hayasaka,S. Uehara,T. Iijima,L. Li Gioi,N. Gabyshev,M. Niiyama,M. Bessner,E. Kovalenko,B. D. Yabsley,S. Pardi,S. Patra,J. Bennett,H. Kichimi,S. -H. Park,Y. Usov,T. E. Browder,Y. Choi,A. Garmash,Y. Kato,T. V. Dong,V. Zhilich,S. Uno,Y. Seino,D. Y. Kim,J. H. Yin,A. Rostomyan,D. M. Asner,R. Van Tonder,A. Chen,H. Ye,P. Kodys,J. S. Lange,R. Pestotnik,K. Inami,M. Campajola,G. Bonvicini,T. Sumiyoshi,P. Urquijo,V. Gaur,D. Cinabro,K. Nishimura,T. Matsuda,M. Nayak,D. Matvienko,S. Paul,J. -G. Shiu,V. Chekelian,R. Kroeger,F. Tenchini,V. Zhukova,S. Choudhury,J. T. McNeil,J. Li,R. Itoh,R. Garg,P. Oskin,A. Sokolov,M. Bracko,K. Cho,D. Liventsev,S. Bahinipati,K. Miyabayashi,T. Uglov,F. Di Capua,O. Grzymkowska,P. Krokovny,M. Takizawa,D. Epifanov,M. Watanabe,K. Uno,Z. Dolezal,R. Mussa,G. De Nardo,H. Aihara,L. Nayak,H. Park,C. Sharma,S. Cunliffe,Y. Unno,C. MacQueen,T. Ferber,K. K. Joo,K. Ogawa,Y. Yusa,M. T. Prim,B. G. Cheon,C. P. Shen,S. Eidelman,G. Schnell,G. Russo,S. B. Yang,W. W. Jacobs,W. -S. Hou,T. Bilka,A. Bozek,Y. Iwasaki,R. Mizuk,S. S. Tang,C. Schwanda,P. Wang,K. Lalwani,Z. S. Stottler,K. Kumara,G. B. Mohanty,A. Sangal,T. Aushev,R. Dhamija,H. E. Cho,P. Pakhlov,Y. B. Li,S. -J. Cho,J. Biswal,E. Waheed,E. Won,F. Metzner,A. Giri,G. Pakhlova,J. Libby,M. -Z. Wang,K. Lieret,K. Tanida,V. Babu,V. Popov,S. Nishida,C. H. Kim,Belle Collaboration,H. Ono,S. Jia,S. Al Said,M. Merola,T. Konno.Measurements of branching fractions and asymmetry parameters of $\Xi^0_c\to \Lambda\bar K^{*0}$, $\Xi^0_c\to \Sigma^0\bar K^{*0}$, and $\Xi^0_c\to \Sigma^+K^{*-}$ decays at Belle[EB/OL].(2021-04-21)[2025-05-28].https://arxiv.org/abs/2104.10361.点此复制

Measurements of branching fractions and asymmetry parameters of $\Xi^0_c\to \Lambda\bar K^{*0}$, $\Xi^0_c\to \Sigma^0\bar K^{*0}$, and $\Xi^0_c\to \Sigma^+K^{*-}$ decays at Belle