Observation of the radiative decays of Υ(1S) to χc1.

Katrenko, P.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D.M.; Aushev, T.; Badhrees, I.; Bahinipati, S.; Behera, P.; Beleno, C.; Bennett, J.; Bhardwaj, V.; Bhuyan, B.; Biswal, J.; Bobrov, A.; Bonvicini, G.; Bracko, M.; Campajola, M.; Cao, L.; Cervenkov, D.; Chekelian, V.; Chen, A.; Cheon, B.G.; Chilikin, K.; Cho, H.E.; Cho, K.; Choi, S.-K.; Choi, Y.; Choudhury, S.; Cinabro, D.; Cunliffe, S.; Di Capua, F.; Di Carlo, S.; Dolezal, Z.; Dong, T.V.; Eidelman, S.; Epifanov, D.; Fast, J.E.; Fulsom, B.G.; Garg, R.; Gaur, V.; Gabyshev, N.; Garmash, A.; Giri, A.; Goldenzweig, P.; Golob, B.; Grzymkowska, O.; Hartbrich, O.; Hayasaka, K.; Hayashii, H.; Hou, W.-S.; Iijima, T.; Inami, K.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Jacobs, W.W.; Jeon, H.B.; Jia, S.; Jin, Y.; Joffe, D.; Joo, K.K.; Karyan, G.; Kichimi, H.; Kim, D.Y.; Kim, K.T.; Kim, S.H.; Kinoshita, K.; Kodys, P.; Korpar, S.; Kroeger, R.; Kuhr, T.; Lee, I.S.; Lee, S.C.; Lewis, P.; Li, Y.B.; Li Gioi, L.; Libby, J.; Lieret, K.; MacQueen, C.; Masuda, M.; Matsuda, T.; Matvienko, D.; Merola, M.; Miyabayashi, K.; Miyata, H.; Mizuk, R.; Mohanty, G.B.; Moon, T.J.; Mori, T.; Mussa, R.; Nakano, E.; Nakano, T.; Nakao, M.; Nayak, M.; Nisar, N.K.; Nishida, S.; Nishimura, K.; Onuki, H.Ono Y.; Oskin, P.; Pakhlov, P.; Pakhlova, G.; Pang, T.; Pardi, S.; Park, C.W.; Park, H.; Park, S.-H.; Paul, S.; Pedlar, T.K.; Pestotnik, R.; Piilonen, L.E.; Popov, V.; Prencipe, E.; Prim, M.T.; Ritter, M.; Rostomyan, A.; Rout, N.; Russo, G.; Sahoo, D.; Sakai, Y.; Sandilya, S.; Sanuki, T.; Savinov, V.; Schneider, O.; Schnell, G.; Schueler, J.; Schwanda, C.; Seino, Y.; Senyo, K.; Sevior, M.E.; Shen, C.P.; Shiu, J.-G.; Solovieva, E.; Staric, M.; Stottler, Z.S.; Sumiyoshi, T.; Sutcliffe, W.; Takizawa, M.; Tamponi, U.; Tanida, K.; Tenchini, F.; Trabelsi, K.; Uchida, M.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Usov, Y.; Van Tonder, R.; Varner, G.; Vossen, A.; Wang, B.; Wang, C.H.; Wang, M.-Z.; Wang, P.; Wang, X.L.; Won, E.; Yang, S.B.; Ye, H.; Yelton, J.; Yin, J.H.; Yuan, C.Z.; Yusa, Y.; Zhang, Z.P.; Zhilich, V.; Zhukova, V.

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Observation of the radiative decays of Υ(1S) to χc1.

Katrenko, P., Adachi, I., Aihara, H., Al Said, S., Asner, D., Aushev, T., et al. (2020). Observation of the radiative decays of Υ(1S) to χc1. Physical Review Letters, 124, 122001. Retrieved from https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2020-371.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0008-1AFD-F Version Permalink: https://hdl.handle.net/21.11116/0000-0008-1AFE-E

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Katrenko, P.¹, Author
Adachi, I.¹, Author
Aihara, H.¹, Author
Al Said, S.¹, Author
Asner, D.M.¹, Author
Aushev, T.¹, Author
Badhrees, I.¹, Author
Bahinipati, S.¹, Author
Behera, P.¹, Author
Beleno, C.¹, Author
Bennett, J.¹, Author
Bhardwaj, V.¹, Author
Bhuyan, B.¹, Author
Biswal, J.¹, Author
Bobrov, A.¹, Author
Bonvicini, G.¹, Author
Bracko, M.¹, Author
Campajola, M.¹, Author
Cao, L.¹, Author
Cervenkov, D.¹, Author
Chekelian, V.¹, AuthorChen, A.¹, AuthorCheon, B.G.¹, AuthorChilikin, K.¹, AuthorCho, H.E.¹, AuthorCho, K.¹, AuthorChoi, S.-K.¹, AuthorChoi, Y.¹, AuthorChoudhury, S.¹, AuthorCinabro, D.¹, AuthorCunliffe, S.¹, AuthorDi Capua, F.¹, AuthorDi Carlo, S.¹, AuthorDolezal, Z.¹, AuthorDong, T.V.¹, AuthorEidelman, S.¹, AuthorEpifanov, D.¹, AuthorFast, J.E.¹, AuthorFulsom, B.G.¹, AuthorGarg, R.¹, AuthorGaur, V.¹, AuthorGabyshev, N.¹, AuthorGarmash, A.¹, AuthorGiri, A.¹, AuthorGoldenzweig, P.¹, AuthorGolob, B.¹, AuthorGrzymkowska, O.¹, AuthorHartbrich, O.¹, AuthorHayasaka, K.¹, AuthorHayashii, H.¹, AuthorHou, W.-S.¹, AuthorIijima, T.¹, AuthorInami, K.¹, AuthorIshikawa, A.¹, AuthorItoh, R.¹, AuthorIwasaki, M.¹, AuthorIwasaki, Y.¹, AuthorJacobs, W.W.¹, AuthorJeon, H.B.¹, AuthorJia, S.¹, AuthorJin, Y.¹, AuthorJoffe, D.¹, AuthorJoo, K.K.¹, AuthorKaryan, G.¹, AuthorKichimi, H.¹, AuthorKim, D.Y.¹, AuthorKim, K.T.¹, AuthorKim, S.H.¹, AuthorKinoshita, K.¹, AuthorKodys, P.¹, AuthorKorpar, S.¹, AuthorKroeger, R.¹, AuthorKuhr, T.¹, AuthorLee, I.S.¹, AuthorLee, S.C.¹, AuthorLewis, P.¹, AuthorLi, Y.B.¹, AuthorLi Gioi, L.¹, AuthorLibby, J.¹, AuthorLieret, K.¹, AuthorMacQueen, C.¹, AuthorMasuda, M.¹, AuthorMatsuda, T.¹, AuthorMatvienko, D.¹, AuthorMerola, M.¹, AuthorMiyabayashi, K.¹, AuthorMiyata, H.¹, AuthorMizuk, R.¹, AuthorMohanty, G.B.¹, AuthorMoon, T.J.¹, AuthorMori, T.¹, AuthorMussa, R.¹, AuthorNakano, E.¹, AuthorNakano, T.¹, AuthorNakao, M.¹, AuthorNayak, M.¹, AuthorNisar, N.K.¹, AuthorNishida, S.¹, AuthorNishimura, K.¹, AuthorOnuki, H.Ono Y.¹, AuthorOskin, P.¹, AuthorPakhlov, P.¹, AuthorPakhlova, G.¹, AuthorPang, T.¹, AuthorPardi, S.¹, AuthorPark, C.W.¹, AuthorPark, H.¹, AuthorPark, S.-H.¹, AuthorPaul, S.¹, AuthorPedlar, T.K.¹, AuthorPestotnik, R.¹, AuthorPiilonen, L.E.¹, AuthorPopov, V.¹, AuthorPrencipe, E.¹, AuthorPrim, M.T.¹, AuthorRitter, M.¹, AuthorRostomyan, A.¹, AuthorRout, N.¹, AuthorRusso, G.¹, AuthorSahoo, D.¹, AuthorSakai, Y.¹, AuthorSandilya, S.¹, AuthorSanuki, T.¹, AuthorSavinov, V.¹, AuthorSchneider, O.¹, AuthorSchnell, G.¹, AuthorSchueler, J.¹, AuthorSchwanda, C.¹, AuthorSeino, Y.¹, AuthorSenyo, K.¹, AuthorSevior, M.E.¹, AuthorShen, C.P.¹, AuthorShiu, J.-G.¹, AuthorSolovieva, E.¹, AuthorStaric, M.¹, AuthorStottler, Z.S.¹, AuthorSumiyoshi, T.¹, AuthorSutcliffe, W.¹, AuthorTakizawa, M.¹, AuthorTamponi, U.¹, AuthorTanida, K.¹, AuthorTenchini, F.¹, AuthorTrabelsi, K.¹, AuthorUchida, M.¹, AuthorUehara, S.¹, AuthorUglov, T.¹, AuthorUnno, Y.¹, AuthorUno, S.¹, AuthorUrquijo, P.¹, AuthorUsov, Y.¹, AuthorVan Tonder, R.¹, AuthorVarner, G.¹, AuthorVossen, A.¹, AuthorWang, B.¹, AuthorWang, C.H.¹, AuthorWang, M.-Z.¹, AuthorWang, P.¹, AuthorWang, X.L.¹, AuthorWon, E.¹, AuthorYang, S.B.¹, AuthorYe, H.¹, AuthorYelton, J.¹, AuthorYin, J.H.¹, AuthorYuan, C.Z.¹, AuthorYusa, Y.¹, AuthorZhang, Z.P.¹, AuthorZhilich, V.¹, AuthorZhukova, V.¹, Author more..

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1Max Planck Institute for Physics, Max Planck Society and Cooperation Partners, ou_2253650

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Free keywords: Belle

Abstract: We report the first observation of the radiative decay of the $\Upsilon(1S)$ into a charmonium state. The statistical significance of the observed signal of $\Upsilon(1S) \to \gamma \chi_{c1}$ is 6.3 standard deviations including systematics. The branching fraction is calculated to be Br($\Upsilon(1S) \to \gamma \chi_{c1}$) = (4.7^{+2.4}_{-1.8} (stat) ^{+0.4}_{-0.5} (sys)) * 10^{-5}. We also searched for $\Upsilon(1S)$ radiative decays into $\chi_{c0,2}$ and $\eta_c(1S,2S)$ and set upper limits on their branching fractions. These results are obtained from a 24.9 fb^{-1} data sample collected with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider at a center-of-mass energy equal to the $\Upsilon(2S)$ mass using $\Upsilon(1S)$ tagging by the $\Upsilon(2S) \to \Upsilon(1S) \pi^+\pi^-$ transitions.

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Dates: Date issued: 2020

Publication Status: Issued

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Identifiers: Other: MPP-2020-371
URI: https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2020-371
arXiv: arxiv:1910.10915
URI: https://inspirehep.net/literature?q=find%20eprint%201910.10915

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Title: Physical Review Letters

Abbreviation : Phys.Rev.Lett.

Source Genre: Journal

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Pages: - Volume / Issue: 124 Sequence Number: - Start / End Page: 122001 Identifier: -