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T.Shekhtman L.Shevchenko V.Shires A.Silva Coutinho R.Simi G.Sirendi M.Skidmore N.Skwarnicki T.Smith N.A.Smith E.Smith E.Smith J.Smith M.Snoek H.Sokoloff M.D.Soler F.J.P.Soomro F.Souza D.Souza De Paula B.Spaan B.Sparkes A.Spinella F.Spradlin P.Stagni F.Stahl S.Steinkamp O.Stenyakin O.Stevenson S.Stoica S.Stone S.Storaci B.Stracka S.Straticiuc M.Straumann U.Stroili R.Subbiah V.K.Sun L.Sutcliffe W.Swientek K.Swientek S.Syropoulos V.Szczekowski M.Szczypka P.Szilard D.Szumlak T.T'Jampens S.Teklishyn M.Tellarini G.Teodorescu E.Teubert F.Thomas C.Thomas E.van Tilburg J.Tisserand V.Tobin M.Tolk S.Tomassetti L.Tonelli D.Topp-Joergensen S.Torr N.Tournefier E.Tourneur S.Tran M.T.Tresch M.Tsaregorodtsev A.Tsopelas P.Tuning N.Ubeda Garcia M.Ukleja A.Ustyuzhanin A.Uwer U.Vagnoni V.Valenti G.Vallier A.Vazquez Gomez R.Vazquez Regueiro P.Vázquez Sierra C.Vecchi S.Velthuis J.J.Veltri M.Veneziano G.Vesterinen M.Viaud B.Vieira D.Vieites Diaz M.Vilasis-Cardona X.Vollhardt A.Volyanskyy D.Voong D.Vorobyev A.Vorobyev V.Voß C.Voss H.de Vries J.A.Waldi R.Wallace C.Wallace R.Walsh J.Wandernoth S.Wang J.Ward D.R.Watson N.K.Webber A.D.Websdale D.Whitehead M.Wicht J.Wiedner D.Wilkinson G.Williams M.P.Williams M.Wilson F.F.Wimberley J.Wishahi J.Wislicki W.Witek M.Wormser G.Wotton S.A.Wright S.Wu S.Wyllie K.Xie Y.Xing Z.Xu Z.Yang Z.Yuan X.Yushchenko O.Zangoli M.Zavertyaev M.Zhang F.Zhang L.Zhang W.C.Zhang Y.Zhelezov A.Zhokhov A.Zhong L.Zvyagin A.2024-07-222024-07-22201405503213http://akademikarsiv.cbu.edu.tr:4000/handle/123456789/16823Evidence for the decay mode X(3872) → ψ(2S)γ in B+→ X(3872)K+decays is found with a sig-nificance of 4.4 standard deviations. The analysis is based on adata sample of proton-proton collisions, corresponding to an integrated luminosity of 3 fbthe X(3872), collected with the LHCb detector, at centre-of-mass energies of 7 and 8 TeV. The ratio of the branching fraction of the X(3872) → ψ(2S)γ decay to that of the X(3872) → J/ψγ decay is measured to be B(X(3872) → ψ(2S)γ)/B(X(3872) → J/ψγ) = 2.46 ± 0.64 ± 0.29, where the first uncertainty is statistical and the second is systematic. The measured value does not support a pure DD* molecular interpretation of the X(3872)state. © 2014 CERN for the benefit of the LHCb Collaboration.EnglishAll Open Access; Gold Open AccessArticle10.1016/j.nuclphysb.2014.06.011