Search for a pentaquark state decaying into $pJ/\psi$ in $\Upsilon(1,2S)$ inclusive decays at Belle
Search for a pentaquark state decaying into $pJ/\psi$ in $\Upsilon(1,2S)$ inclusive decays at Belle
Using the data samples of 102 million $\Upsilon(1S)$ and 158 million $\Upsilon(2S)$ events collected by the Belle detector, we search for a pentaquark state in the $pJ/\psi$ final state from $\Upsilon(1,2S)$ inclusive decays. Here, the charge-conjugate $\bar{p}J/\psi$ is included. We observe clear $pJ/\psi$ production in $\Upsilon(1,2S)$ decays and measure the branching fractions to be $B[\Upsilon(1S) \to pJ/\psi + anything] = [4.31 \pm 0.16(stat.) \pm 0.19(syst.)] \times 10^{-5}$ and $B[\Upsilon(2S) \to pJ/\psi + anything] = [2.31 \pm 0.15(stat.) \pm 0.16(syst.)] \times 10^{-5}$. We also measure the cross section of inclusive $pJ/\psi$ production in $e^+e^-$ annihilation to be $\sigma(e^+e^- \to pJ/\psi + anything) = [58.5 \pm 2.1 (stat.) \pm 2.7(syst.)]$~fb at $\sqrt{s} = 10.52~\hbox{GeV}$ using an 89.5~fb$^{-1}$ continuum data sample. There is no significant $P_c(4312)^+$, $P_c(4440)^+$ or $P_c(4457)^+$ signal found in the $pJ/\psi$ final states in $\Upsilon(1,2S)$ inclusive decays. We determine the upper limits of $B[\Upsilon(1,2S)\to P_c^{+} + anything] \cdot B(P_c^{+}\to pJ/\psi)$ to be at the $10^{-6}$ level.
Belle Collaboration、X. Dong、I. Adachi、X. L. Wang、D. M. Asner、J. K. Ahn、H. Atmacan、R. Ayad、S. Bahinipati、Sw. Banerjee、M. Bessner、V. Bhardwaj、D. Biswas、A. Bozek、M. Bra?ko、P. Branchini、T. E. Browder、A. Budano、M. Campajola、D. ?ervenkov、M. -C. Chang、P. Chang、B. G. Cheon、A. Korobov、S. Al Said、H. Y. Zhang、D. Bodrov、H. Aihara、H. E. Cho、K. Cho、S. -K. Choi、Y. Choi、S. Choudhury、S. Das、G. De Nardo、G. De Pietro、R. Dhamija、F. Di Capua、J. Dingfelder、Z. Dole?al、T. V. Dong、P. Ecker、D. Epifanov、T. Ferber、D. Ferlewicz、B. G. Fulsom、R. Garg、V. Gaur、A. Giri、P. Goldenzweig、E. Graziani、T. Gu、Y. Guan、K. Gudkova、C. Hadjivasiliou、H. Hayashii、S. Hazra、M. T. Hedges、W. -S. Hou、C. -L. Hsu、K. Inami、N. Ipsita、A. Ishikawa、R. Itoh、M. Iwasaki、W. W. Jacobs、S. Jia、Y. Jin、D. Kalita、T. Kawasaki、D. Y. Kim、K. -H. Kim、Y. J. Kim、Y. -K. Kim、K. Kinoshita、P. Kody?、S. Korpar、E. Kovalenko、P. Kri?an、P. Krokovny、T. Kuhr、R. Kumar、T. Kumita、A. Kuzmin、Y. -J. Kwon、Y. -T. Lai、T. Lam、J. S. Lange、D. Levit、L. K. Li、Y. Li、Y. B. Li、L. Li Gioi、J. Libby、D. Liventsev、Y. Ma、M. Masuda、T. Matsuda、S. K. Maurya、F. Meier、M. Merola、F. Metzner、K. Miyabayashi、R. Mussa、I. Nakamura、T. Nakano、M. Nakao、Z. Natkaniec、A. Natochii、L. Nayak、M. Nayak、S. Nishida、S. Ogawa、H. Ono、G. Pakhlova、S. Pardi、H. Park、J. Park、S. -H. Park、A. Passeri、S. Patra、S. Paul、R. Pestotnik、L. E. Piilonen、T. Podobnik、E. Prencipe、M. T. Prim、G. Russo、S. Sandilya、V. Savinov、G. Schnell、C. Schwanda、Y. Seino、K. Senyo、M. E. Sevior、W. Shan、C. Sharma、J. -G. Shiu、J. B. Singh、E. Solovieva、M. Stari?、M. Takizawa、K. Tanida、F. Tenchini、R. Tiwary、M. Uchida、Y. Unno、S. Uno、P. Urquijo、Y. Usov、A. Vinokurova、S. Watanuki、E. Won、B. D. Yabsley、W. Yan、S. B. Yang、J. Yelton、J. H. Yin、Y. Yook、C. Z. Yuan、L. Yuan、Y. Yusa、Z. P. Zhang、V. Zhilich
物理学自然科学研究方法自然科学现状
Belle Collaboration,X. Dong,I. Adachi,X. L. Wang,D. M. Asner,J. K. Ahn,H. Atmacan,R. Ayad,S. Bahinipati,Sw. Banerjee,M. Bessner,V. Bhardwaj,D. Biswas,A. Bozek,M. Bra?ko,P. Branchini,T. E. Browder,A. Budano,M. Campajola,D. ?ervenkov,M. -C. Chang,P. Chang,B. G. Cheon,A. Korobov,S. Al Said,H. Y. Zhang,D. Bodrov,H. Aihara,H. E. Cho,K. Cho,S. -K. Choi,Y. Choi,S. Choudhury,S. Das,G. De Nardo,G. De Pietro,R. Dhamija,F. Di Capua,J. Dingfelder,Z. Dole?al,T. V. Dong,P. Ecker,D. Epifanov,T. Ferber,D. Ferlewicz,B. G. Fulsom,R. Garg,V. Gaur,A. Giri,P. Goldenzweig,E. Graziani,T. Gu,Y. Guan,K. Gudkova,C. Hadjivasiliou,H. Hayashii,S. Hazra,M. T. Hedges,W. -S. Hou,C. -L. Hsu,K. Inami,N. Ipsita,A. Ishikawa,R. Itoh,M. Iwasaki,W. W. Jacobs,S. Jia,Y. Jin,D. Kalita,T. Kawasaki,D. Y. Kim,K. -H. Kim,Y. J. Kim,Y. -K. Kim,K. Kinoshita,P. Kody?,S. Korpar,E. Kovalenko,P. Kri?an,P. Krokovny,T. Kuhr,R. Kumar,T. Kumita,A. Kuzmin,Y. -J. Kwon,Y. -T. Lai,T. Lam,J. S. Lange,D. Levit,L. K. Li,Y. Li,Y. B. Li,L. Li Gioi,J. Libby,D. Liventsev,Y. Ma,M. Masuda,T. Matsuda,S. K. Maurya,F. Meier,M. Merola,F. Metzner,K. Miyabayashi,R. Mussa,I. Nakamura,T. Nakano,M. Nakao,Z. Natkaniec,A. Natochii,L. Nayak,M. Nayak,S. Nishida,S. Ogawa,H. Ono,G. Pakhlova,S. Pardi,H. Park,J. Park,S. -H. Park,A. Passeri,S. Patra,S. Paul,R. Pestotnik,L. E. Piilonen,T. Podobnik,E. Prencipe,M. T. Prim,G. Russo,S. Sandilya,V. Savinov,G. Schnell,C. Schwanda,Y. Seino,K. Senyo,M. E. Sevior,W. Shan,C. Sharma,J. -G. Shiu,J. B. Singh,E. Solovieva,M. Stari?,M. Takizawa,K. Tanida,F. Tenchini,R. Tiwary,M. Uchida,Y. Unno,S. Uno,P. Urquijo,Y. Usov,A. Vinokurova,S. Watanuki,E. Won,B. D. Yabsley,W. Yan,S. B. Yang,J. Yelton,J. H. Yin,Y. Yook,C. Z. Yuan,L. Yuan,Y. Yusa,Z. P. Zhang,V. Zhilich.Search for a pentaquark state decaying into $pJ/\psi$ in $\Upsilon(1,2S)$ inclusive decays at Belle[EB/OL].(2024-03-07)[2025-05-24].https://arxiv.org/abs/2403.04340.点此复制
评论