Observation of muonic Dalitz decays of chib mesons and precise spectroscopy of hidden-beauty states

R Aaij,A S W Abdelmotteleb,C Abellan Beteta,F Abudinén,T Ackernley,A A Adefisoye,B Adeva,M Adinolfi,P Adlarson,C Agapopoulou,C A Aidala,Z Ajaltouni,S Akar,K Akiba,P Albicocco,J Albrecht,F Alessio,M Alexander,Z Aliouche,P Alvarez Cartelle,R Amalric,S Amato,J L Amey,Y Amhis,L An,L Anderlini,M Andersson,A Andreianov,P Andreola,M Andreotti,D Andreou,A Anelli,D Ao,F Archilli,M Argenton,S Arguedas Cuendis,A Artamonov,M Artuso,E Aslanides,R Ataíde Da Silva,M Atzeni,B Audurier,D Bacher,I Bachiller Perea,S Bachmann,M Bachmayer,J J Back,P Baladron Rodriguez,V Balagura,W Baldini,L Balzani,H Bao,J Baptista De Souza Leite,C Barbero Pretel,M Barbetti,I R Barbosa,R J Barlow,M Barnyakov,S Barsuk,W Barter,M Bartolini,J Bartz,J M Basels,S Bashir,G Bassi,B Batsukh,P B Battista,A Bay,A Beck,M Becker,F Bedeschi,I B Bediaga,N B Behling,S Belin,V Bellee,K Belous,I Belov,I Belyaev,G Benane,G Bencivenni,E Ben-Haim,A Berezhnoy,R Bernet,S Bernet Andres,A Bertolin,C Betancourt,F Betti,J Bex,Ia Bezshyiko,J Bhom,M S Bieker,N V Biesuz,P Billoir,A Biolchini,M Birch,F C R Bishop,A Bitadze,A Bizzeti,T Blake,F Blanc,J E Blank,S Blusk,V Bocharnikov,J A Boelhauve,O Boente Garcia,T Boettcher,A Bohare,A Boldyrev,C S Bolognani,R Bolzonella,N Bondar,A Bordelius,F Borgato,S Borghi,M Borsato,J T Borsuk,S A Bouchiba,M Bovill,T J V Bowcock,A Boyer,C Bozzi,A Brea Rodriguez,N Breer,J Brodzicka,A Brossa Gonzalo,J Brown,D Brundu,E Buchanan,A Buonaura,L Buonincontri,A T Burke,C Burr,J S Butter,J Buytaert,W Byczynski,S Cadeddu,H Cai,A C Caillet,R Calabrese,S Calderon Ramirez,L Calefice,S Cali,M Calvi,M Calvo Gomez,P Camargo Magalhaes,J I Cambon Bouzas,P Campana,D H Campora Perez,A F Campoverde Quezada,S Capelli,L Capriotti,R Caravaca-Mora,A Carbone,L Carcedo Salgado,R Cardinale,A Cardini,P Carniti,L Carus,A Casais Vidal,R Caspary,G Casse,J Castro Godinez,M Cattaneo,G Cavallero,V Cavallini,S Celani,D Cervenkov,S Cesare,A J Chadwick,I Chahrour,M Charles,Ph Charpentier,E Chatzianagnostou,M Chefdeville,C Chen,S Chen,Z Chen,A Chernov,S Chernyshenko,X Chiotopoulos,V Chobanova,S Cholak,M Chrzaszcz,A Chubykin,V Chulikov,P Ciambrone,X Cid Vidal,G Ciezarek,P Cifra,P E L Clarke,M Clemencic,H V Cliff,J Closier,C Cocha Toapaxi,V Coco,J Cogan,E Cogneras,L Cojocariu,P Collins,T Colombo,M C Colonna,A Comerma-Montells,L Congedo,A Contu,N Cooke,I Corredoira,A Correia,G Corti,J J Cottee Meldrum,B Couturier,D C Craik,M Cruz Torres,E Curras Rivera,R Currie,C L Da Silva,S Dadabaev,L Dai,X Dai,E Dall’Occo,J Dalseno,C D’Ambrosio,J Daniel,A Danilina,P D’Argent,A Davidson,J E Davies,A Davis,O De Aguiar Francisco,C De Angelis,F De Benedetti,J De Boer,K De Bruyn,S De Capua,M De Cian,U De Freitas Carneiro Da Graca,E De Lucia,J M De Miranda,L De Paula,M De Serio,P De Simone,F De Vellis,J A De Vries,F Debernardis,D Decamp,V Dedu,S Dekkers,L Del Buono,B Delaney,H.-P Dembinski,J Deng,V Denysenko,O Deschamps,F Dettori,B Dey,P Di Nezza,I Diachkov,S Didenko,S Ding,L Dittmann,V Dobishuk,A D Docheva,C Dong,A M Donohoe,F Dordei,A C 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Zhang,Y Zhao,A Zharkova,A Zhelezov,S Z Zheng,X Z Zheng,Y Zheng,T Zhou,X Zhou,Y Zhou,V Zhovkovska,L Z Zhu,X Zhu,X Zhu,V Zhukov,J Zhuo,Q Zou,D Zuliani,G Zunica

doi:10.1007/jhep10(2024)122

Observation of muonic Dalitz decays of chib mesons and precise spectroscopy of hidden-beauty states

R Aaij, A S W Abdelmotteleb + Show 1136 more

https://doi.org/10.1007/jhep10(2024)122

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Journal: Journal of High Energy Physics

Publication Date: Oct 16, 2024

#LHCb Detector #Decay Modes + Show 3 more

Abstract
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Abstract

The decays of the χb1(1P), χb2(1P), χb1(2P) and χb2(2P) mesons into the Υ(1S)μ+μ− final state are observed with a high significance using proton-proton collision data collected with the LHCb detector and corresponding to an integrated luminosity of 9 fb−1. The newly observed decays together with the Υ(2S) → Υ(1S)π+π− and Υ(3S) → Υ(2S)π+π− decay modes are used for precision measurements of the mass and mass splittings for the hidden-beauty states.

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