Search for the doubly heavy Ξ_bc^0 baryon via decays to D 0 pK −
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,A. A. Alves Jr,S. Amato,Y. Amhis,L. An,L. Anderlini,G. Andreassi,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,V. Batozskaya,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,V. Bocci,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,R. Cenci,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,S. Coquereau,G. Corti,C. M. Costa Sobral, B. Couturier,D. C. Craik,J. Crkovská,M. Cruz Torres,R. Currie,C. L. Da Silva,E. Dall’Occo,J. Dalseno,C. D’Ambrosio,A. Danilina,P. d’Argent,A. Davis,O. De Aguiar Francisco,K. De Bruyn,S. De Capua,M. De Cian,J. M. De Miranda,L. De Paula,M. De Serio, D. De Simone,P. De Simone,J. A. de Vries,C. T. Dean,W. Dean,D. Decamp,L. Del Buono,B. Delaney,H.-P. Dembinski,A. Dendek,V. Denysenko,D. Derkach,O. Deschamps,F. Desse,F. Dettori,B. Dey,P. Di Nezza,S. Didenko,L. Dieste Maronas,H. Dijkstra,V. Dobishuk,A. M. Donohoe,F. Dordei,M. Dorigo,A. C. dos Reis,L. Douglas,A. Dovbnya,A. G. Downes,K. Dreimanis,M. W. Dudek,L. Dufour,V. Duk,P. Durante,J. M. Durham,D. Dutta,M. Dziewiecki,A. Dziurda,A. Dzyuba,S. 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Gioventù,P. Gironella Gironell,L. Giubega,C. Giugliano,K. Gizdov,E. L. Gkougkousis,V. V. Gligorov,C. Göbel,E. Golobardes,D. Golubkov,A. Golutvin,A. Gomes,S. Gomez Fernandez,F. Goncalves Abrantes,M. Goncerz,G. Gong,P. Gorbounov,I. V. Gorelov,C. Gotti,E. Govorkova,J. P. Grabowski,R. Graciani Diaz,T. Grammatico,L. A. Granado Cardoso,E. Graugés,E. Graverini,G. Graziani,A. Grecu,L. M. Greeven,P. Griffith,L. Grillo,S. Gromov,L. Gruber,B. R. Gruberg Cazon,C. Gu,M. Guarise,P. A. Günther,E. Gushchin,A. Guth,Y. Guz,T. Gys,T. Hadavizadeh,G. Haefeli,C. Haen,J. Haimberger,S. C. Haines,T. Halewood-leagas,P. M. Hamilton,Q. Han,X. Han,T. H. Hancock,S. Hansmann-Menzemer,N. Harnew,T. Harrison,R. Hart,C. Hasse,M. Hatch,J. He,M. Hecker,K. Heijhoff,K. Heinicke,A. M. Hennequin,K. Hennessy,L. Henry,J. Heuel,A. Hicheur,D. Hill,M. Hilton,S. E. Hollitt,P. H. Hopchev,J. Hu,J. Hu,W. Hu,W. Huang,X. Huang,W. Hulsbergen, R. J. Hunter,M. Hushchyn,D. Hutchcroft,D. Hynds, P. Ibis,M. Idzik, D. Ilin,P. Ilten, A. 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Li, Z. Li,X. Liang,T. Lin,R. Lindner,V. Lisovskyi,R. Litvinov, G. Liu,H. Liu,S. Liu,X. Liu,A. Loi,J. Lomba Castro,I. Longstaff,J. H. Lopes,G. Loustau,G. H. Lovell,Y. Lu,D. Lucchesi,S. Luchuk,M. Lucio Martinez,V. Lukashenko,Y. Luo,A. Lupato,E. Luppi,O. Lupton,A. Lusiani,X. Lyu,L. Ma,S. Maccolini,F. Machefert,F. Maciuc,V. Macko,P. Mackowiak,S. Maddrell-Mander,O. Madejczyk,L. R. Madhan Mohan,O. Maev,A. Maevskiy,D. Maisuzenko,M. W. Majewski,S. Malde,B. Malecki,A. Malinin, T. Maltsev, H. Malygina, G. Manca,G. Mancinelli,R. Manera Escalero, D. Manuzzi,D. Marangotto,J. Maratas,J. F. Marchand,U. Marconi,S. Mariani,C. Marin Benito,M. Marinangeli,P. Marino,J. Marks,P. J. Marshall,G. Martellotti,L. Martinazzoli,M. Martinelli,D. Martinez Santos,F. Martinez Vidal,A. Massafferri, M. Materok,R. Matev, A. Mathad,Z. Mathe,V. Matiunin,C. Matteuzzi,K. R. Mattioli,A. Mauri,E. Maurice, J. Mauricio,M. Mazurek,M. McCann, L. Mcconnell,T. H. Mcgrath, A. McNab,R. McNulty,J. V. Mead,B. Meadows,C. Meaux,G. Meier,N. Meinert,D. Melnychuk,S. Meloni,M. Merk,A. Merli,L. Meyer Garcia,M. Mikhasenko,D. A. Milanes,E. Millard,M. Milovanovic,M.-N. Minard, L. Minzoni,S. E. Mitchell, B. Mitreska,D. S. Mitzel, A. Mödden,R. A. Mohammed,R. D. Moise,T. Mombächer,I. A. Monroy,S. Monteil,M. Morandin,G. Morello,M. J. Morello,J. Moron,A. B. Morris,A. G. Morris,R. Mountain,H. Mu,F. Muheim,M. Mukherjee,M. Mulder,D. Müller,K. Müller, C. H. Murphy,D. Murray, P. Muzzetto,P. Naik,T. Nakada,R. Nandakumar,T. Nanut,I. Nasteva,M. Needham, I. Neri,N. Neri,S. Neubert,N. Neufeld,R. Newcombe,T. D. Nguyen,C. Nguyen-Mau,E. M. Niel,S. Nieswand,N. Nikitin,N. S. Nolte,C. Nunez,A. Oblakowska-Mucha,V. Obraztsov,S. Ogilvy,D. P. O’Hanlon,R. Oldeman,C. J. G. Onderwater,J. D. Osborn,A. Ossowska,J. M. Otalora Goicochea,T. Ovsiannikova,P. Owen,A. Oyanguren,B. Pagare, P. R. Pais,T. Pajero,A. Palano, M. Palutan,Y. Pan,G. Panshin,A. Papanestis,M. Pappagallo,L. L. Pappalardo,C. Pappenheimer, W. Parker,C. Parkes,C. J. Parkinson,B. Passalacqua,G. Passaleva,A. Pastore,M. Patel,C. Patrignani,C. J. Pawley,A. Pearce,A. Pellegrino,M. Pepe Altarelli,S. Perazzini,D. Pereima,P. Perret,K. Petridis,A. Petrolini,A. Petrov,S. Petrucci, M. Petruzzo, A. Philippov, L. Pica,M. Piccini,B. Pietrzyk, G. Pietrzyk, M. Pili,D. Pinci, J. Pinzino,F. Pisani, A. Piucci, P. K Resmi,V. Placinta,S. Playfer, J. Plews,M. Plo Casasus,F. Polci,M. Poli Lener, M. Poliakova,A. Poluektov, N. Polukhina, I. Polyakov,E. Polycarpo,G. J. Pomery,S. Ponce,A. Popov,D. Popov,S. Popov,S. Poslavskii,K. Prasanth, L. Promberger,C. Prouve,V. Pugatch,A. Puig Navarro, H. Pullen,G. Punzi,W. Qian,J. Qin,R. Quagliani,B. Quintana,N. V. Raab,R. I. Rabadan Trejo,B. Rachwal,J. H. Rademacker,M. Rama,M. Ramos Pernas,M. S. Rangel,F. Ratnikov,G. Raven,M. Reboud,F. Redi,F. Reiss,C. Remon Alepuz,Z. Ren,V. Renaudin,R. Ribatti,S. Ricciardi,D. S. Richards,K. Rinnert,P. Robbe,A. Robert,G. Robertson,A. B. Rodrigues,E. Rodrigues,J. A. Rodriguez Lopez,M. Roehrken, A. Rollings,P. Roloff,V. Romanovskiy,M. Romero Lamas,A. Romero Vidal,J. D. Roth, M. Rotondo,M. S. Rudolph,T. Ruf,J. Ruiz Vidal,A. Ryzhikov,J. Ryzka,J. J. Saborido Silva,N. Sagidova,N. Sahoo,B. Saitta,D. Sanchez Gonzalo,C. Sanchez Gras,C. Sanchez Mayordomo,R. Santacesaria,C. Santamarina Rios,M. Santimaria,E. Santovetti,D. Saranin,G. Sarpis, M. Sarpis,A. Sarti,C. Satriano,A. Satta, M. Saur,D. Savrina, H. Sazak,L. G. Scantlebury Smead,S. Schael,M. Schellenberg,M. Schiller,H. Schindler,M. Schmelling,T. Schmelzer,B. Schmidt,O. Schneider,A. Schopper,M. Schubiger,S. Schulte,M. H. Schune,R. Schwemmer, B. Sciascia,A. Sciubba,S. Sellam,A. Semennikov,M. Senghi Soares,A. Sergi,N. Serra,J. Serrano,L. Sestini,A. Seuthe,P. Seyfert,D. M. Shangase,M. Shapkin,I. Shchemerov,L. Shchutska,T. Shears,L. Shekhtman,Z. Shen,V. Shevchenko,E. B. Shields,E. Shmanin,J. D. Shupperd,B. G. Siddi,R. Silva Coutinho,L. Silva de Oliveira,G. Simi,S. Simone,I. Skiba,N. Skidmore,T. Skwarnicki,M. W. Slater,J. C. Smallwood,J. G. Smeaton,A. 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JOURNAL OF HIGH ENERGY PHYSICS（2020）
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摘要
A search for the doubly heavy Ξ_bc^0 baryon using its decay to the D 0 pK – final state is performed using proton-proton collision data at a centre-of-mass energy of 13 TeV collected by the LHCb experiment between 2016 and 2018, corresponding to an integrated luminosity of 5.4 fb − 1 . No significant signal is found in the invariant mass range from 6.7 to 7.2 GeV/ c 2 . Upper limits are set at 95
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B physics,Hadron-Hadron scattering (experiments),Heavy quark production,QCD,Spectroscopy
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