Model-Independent Study of Structure in B^{+}→D^{+}D^{-}K^{+} Decays.
R Aaij,C Abellán Beteta,T Ackernley,B Adeva,M Adinolfi,H Afsharnia,C A Aidala,S Aiola,Z Ajaltouni,S Akar,J Albrecht,F Alessio,M Alexander,A Alfonso Albero,Z Aliouche,G Alkhazov,P Alvarez Cartelle,S Amato,Y Amhis,L An,L Anderlini,A Andreianov,M Andreotti,F Archilli,A Artamonov,M Artuso,K Arzymatov,E Aslanides,M Atzeni,B Audurier,S Bachmann,M Bachmayer,J J Back,S Baker,P Baladron Rodriguez,V Balagura,W Baldini,J Baptista Leite,R J Barlow,S Barsuk,W Barter,M Bartolini,F Baryshnikov,J M Basels,G Bassi,B Batsukh,A Battig,A Bay,M Becker,F Bedeschi,I Bediaga,A Beiter,V Belavin,S Belin,V Bellee,K Belous,I Belov,I Belyaev,G Bencivenni,E Ben-Haim,A Berezhnoy,R Bernet,D Berninghoff,H C Bernstein,C Bertella,E Bertholet,A Bertolin,C Betancourt,F Betti,M O Bettler,Ia Bezshyiko,S Bhasin,J Bhom,L Bian,M S Bieker,S Bifani,P Billoir,M Birch,F C R Bishop,A Bizzeti,M Bjørn,M P Blago,T Blake,F Blanc,S Blusk,D Bobulska,J A Boelhauve,O Boente Garcia,T Boettcher,A Boldyrev,A Bondar,N Bondar,S Borghi,M Borisyak,M Borsato,J T Borsuk,S A Bouchiba,T J V Bowcock,A Boyer,C Bozzi,M J Bradley,S Braun,A Brea Rodriguez,M Brodski,J Brodzicka,A Brossa Gonzalo,D Brundu,A Buonaura,C Burr,A Bursche,A Butkevich,J S Butter,J Buytaert,W Byczynski,S Cadeddu,H Cai,R Calabrese,L Calefice,L Calero Diaz,S Cali,R Calladine,M Calvi,M Calvo Gomez,P Camargo Magalhaes,A Camboni,P Campana,D H Campora Perez,A F Campoverde Quezada,S Capelli,L Capriotti,A Carbone,G Carboni,R Cardinale, A Cardini,I Carli,P Carniti,K Carvalho Akiba,A Casais Vidal,G Casse,M Cattaneo,G Cavallero,S Celani,J Cerasoli,A J Chadwick,M G Chapman,M Charles,Ph Charpentier,G Chatzikonstantinidis,C A Chavez Barajas,M Chefdeville,C Chen,S Chen,A Chernov,S-G Chitic,V Chobanova,S Cholak,M Chrzaszcz,A Chubykin,V Chulikov,P Ciambrone,M F Cicala,X Cid Vidal,G Ciezarek,P E L Clarke,M Clemencic,H V Cliff,J Closier,J L Cobbledick,V Coco,J A B Coelho,J Cogan,E Cogneras,L Cojocariu,P Collins,T Colombo,L Congedo,A Contu,N Cooke,G Coombs,G Corti,C M Costa 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Physical review letters（2020）
引用 110|浏览50
摘要
The only anticipated resonant contributions to B^{+}→D^{+}D^{-}K^{+} decays are charmonium states in the D^{+}D^{-} channel. A model-independent analysis, using LHCb proton-proton collision data taken at center-of-mass energies of sqrt[s]=7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb^{-1}, is carried out to test this hypothesis. The description of the data assuming that resonances only manifest in decays to the D^{+}D^{-} pair is shown to be incomplete. This constitutes evidence for a new contribution to the decay, potentially one or more new charm-strange resonances in the D^{-}K^{+} channel with masses around 2.9 GeV/c^{2}.
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