Search for massive long-lived particles decaying semileptonically in the LHCb detector

在LHCb探测器中寻找以半轻子方式衰变的大质量长寿命粒子。

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作者：Aaij,R,Adeva,B,Adinolfi,M,Ajaltouni,Z,Akar,S,Albrecht,J,Alessio,F,Alexander,M,Ali,S,Alkhazov,G,Alvarez Cartelle,P,Alves,A A Jr,Amato,S,Amerio,S,Amhis,Y,An,L,Anderlini,L,Andreassi,G,Andreotti,M,Andrews,J E,Appleby,R B,Archilli,F,d'Argent,P,Arnau Romeu,J,Artamonov,A,Artuso,M,Aslanides,E,Auriemma,G,Baalouch,M,Babuschkin,I,Bachmann,S,Back,J J,Badalov,A,Baesso,C,Baker,S,Baldini,W,Barlow,R J,Barschel,C,Barsuk,S,Barter,W,Baszczyk,M,Batozskaya,V,Batsukh,B,Battista,V,Bay,A,Beaucourt,L,Beddow,J,Bedeschi,F,Bediaga,I,Bel,L J,Bellee,V,Belloli,N,Belous,K,Belyaev,I,Ben-Haim,E,Bencivenni,G,Benson,S,Benton,J,Berezhnoy,A,Bernet,R,Bertolin,A,Betancourt,C,Betti,F,Bettler,M-O,van Beuzekom,M,Bezshyiko,Ia,Bifani,S,Billoir,P,Bird,T,Birnkraut,A,Bitadze,A,Bizzeti,A,Blake,T,Blanc,F,Blouw,J,Blusk,S,Bocci,V,Boettcher,T,Bondar,A,Bondar,N,Bonivento,W,Bordyuzhin,I,Borgheresi,A,Borghi,S,Borisyak,M,Borsato,M,Bossu,F,Boubdir,M,Bowcock,T J V,Bowen,E,Bozzi,C,Braun,S,Britsch,M,Britton,T,Brodzicka,J,Buchanan,E,Burr,C,Bursche,A,Buytaert,J,Cadeddu,S,Calabrese,R,Calvi,M,Calvo Gomez,M,Camboni,A,Campana,P,Campora Perez,D H,Capriotti,L,Carbone,A,Carboni,G,Cardinale,R,Cardini,A,Carniti,P,Carson,L,Carvalho Akiba,K,Casse,G,Cassina,L,Castillo Garcia,L,Cattaneo,M,Cauet,Ch,Cavallero,G,Cenci,R,Chamont,D,Charles,M,Charpentier,Ph,Chatzikonstantinidis,G,Chefdeville,M,Chen,S,Cheung,S-F,Chobanova,V,Chrzaszcz,M,Cid Vidal,X,Ciezarek,G,Clarke,P E L,Clemencic,M,Cliff,H V,Closier,J,Coco,V,Cogan,J,Cogneras,E,Cogoni,V,Cojocariu,L,Collazuol,G,Collins,P,Comerma-Montells,A,Contu,A,Cook,A,Coombs,G,Coquereau,S,Corti,G,Corvo,M,Costa Sobral,C M,Couturier,B,Cowan,G A,Craik,D C,Crocombe,A,Cruz Torres,M,Cunliffe,S,Currie,R,D'Ambrosio,C,Da Cunha Marinho,F,Dall'Occo,E,Dalseno,J,David,P N Y,Davis,A,De Aguiar Francisco,O,De Bruyn,K,De Capua,S,De Cian,M,De Miranda,J M,De Paula,L,De Serio,M,De Simone,P,Dean,C-T,Decamp,D,Deckenhoff,M,Del Buono,L,Demmer,M,Dendek,A,Derkach,D,Deschamps,O,Dettori,F,Dey,B,Di Canto,A,Dijkstra,H,Dordei,F,Dorigo,M,Dosil Suárez,A,Dovbnya,A,Dreimanis,K,Dufour,L,Dujany,G,Dungs,K,Durante,P,Dzhelyadin,R,Dziurda,A,Dzyuba,A,Déléage,N,Easo,S,Ebert,M,Egede,U,Egorychev,V,Eidelman,S,Eisenhardt,S,Eitschberger,U,Ekelhof,R,Eklund,L,Ely,S,Esen,S,Evans,H M,Evans,T,Falabella,A,Farley,N,Farry,S,Fay,R,Fazzini,D,Ferguson,D,Fernandez Prieto,A,Ferrari,F,Ferreira Rodrigues,F,Ferro-Luzzi,M,Filippov,S,Fini,R A,Fiore,M,Fiorini,M,Firlej,M,Fitzpatrick,C,Fiutowski,T,Fleuret,F,Fohl,K,Fontana,M,Fontanelli,F,Forshaw,D C,Forty,R,Franco Lima,V,Frank,M,Frei,C,Fu,J,Funk,W,Furfaro,E,Färber,C,Gallas Torreira,A,Galli,D,Gallorini,S,Gambetta,S,Gandelman,M,Gandini,P,Gao,Y,Garcia Martin,L M,García Pardiñas,J,Garra Tico,J,Garrido,L,Garsed,P J,Gascon,D,Gaspar,C,Gavardi,L,Gazzoni,G,Gerick,D,Gersabeck,E,Gersabeck,M,Gershon,T,Ghez,Ph,Gianì,S,Gibson,V,Girard,O G,Giubega,L,Gizdov,K,Gligorov,V V,Golubkov,D,Golutvin,A,Gomes,A,Gorelov,I V,Gotti,C,Gándara,M Grabalosa,Graciani Diaz,R,Granado Cardoso,L A,Graugés,E,Graverini,E,Graziani,G,Grecu,A,Griffith,P,Grillo,L,Gruberg Cazon,B R,Grünberg,O,Gushchin,E,Guz,Yu,Gys,T,Göbel,C,Hadavizadeh,T,Hadjivasiliou,C,Haefeli,G,Haen,C,Haines,S C,Hall,S,Hamilton,B,Han,X,Hansmann-Menzemer,S,Harnew,N,Harnew,S T,Harrison,J,Hatch,M,He,J,Head,T,Heister,A,Hennessy,K,Henrard,P,Henry,L,van Herwijnen,E,Heß,M,Hicheur,A,Hill,D,Hombach,C,Hopchev,H,Hulsbergen,W,Humair,T,Hushchyn,M,Hussain,N,Hutchcroft,D,Idzik,M,Ilten,P,Jacobsson,R,Jaeger,A,Jalocha,J,Jans,E,Jawahery,A,Jiang,F,John,M,Johnson,D,Jones,C R,Joram,C,Jost,B,Jurik,N,Kandybei,S,Kanso,W,Karacson,M,Kariuki,J M,Karodia,S,Kecke,M,Kelsey,M,Kenzie,M,Ketel,T,Khairullin,E,Khanji,B,Khurewathanakul,C,Kirn,T,Klaver,S,Klimaszewski,K,Koliiev,S,Kolpin,M,Komarov,I,Koopman,R F,Koppenburg,P,Kosmyntseva,A,Kozachuk,A,Kozeiha,M,Kravchuk,L,Kreplin,K,Kreps,M,Krokovny,P,Kruse,F,Krzemien,W,Kucewicz,W,Kucharczyk,M,Kudryavtsev,V,Kuonen,A K,Kurek,K,Kvaratskheliya,T,Lacarrere,D,Lafferty,G,Lai,A,Lanfranchi,G,Langenbruch,C,Latham,T,Lazzeroni,C,Le Gac,R,van Leerdam,J,Leflat,A,Lefrançois,J,Lefèvre,R,Lemaitre,F,Lemos Cid,E,Leroy,O,Lesiak,T,Leverington,B,Li,T,Li,Y,Likhomanenko,T,Lindner,R,Linn,C,Lionetto,F,Liu,X,Loh,D,Longstaff,I,Lopes,J H,Lucchesi,D,Lucio Martinez,M,Luo,H,Lupato,A,Luppi,E,Lupton,O,Lusiani,A,Lyu,X,Machefert,F,Maciuc,F,Maev,O,Maguire,K,Malde,S,Malinin,A,Maltsev,T,Manca,G,Mancinelli,G,Manning,P,Maratas,J,Marchand,J F,Marconi,U,Marin Benito,C,Marino,P,Marks,J,Martellotti,G,Martin,M,Martinelli,M,Martinez Santos,D,Martinez Vidal,F,Martins Tostes,D,Massacrier,L M,Massafferri,A,Matev,R,Mathad,A,Mathe,Z,Matteuzzi,C,Mauri,A,Maurin,B,Mazurov,A,McCann,M,McCarthy,J,McNab,A,McNulty,R,Meadows,B,Meier,F,Meissner,M,Melnychuk,D,Merk,M,Merli,A,Michielin,E,Milanes,D A,Minard,M-N,Mitzel,D S,Mogini,A,Molina Rodriguez,J,Monroy,I A,Monteil,S,Morandin,M,Morawski,P,Mordà,A,Morello,M J,Moron,J,Morris,A B,Mountain,R,Muheim,F,Mulder,M,Mussini,M,Muster,B,Müller,D,Müller,J,Müller,K,Müller,V,Naik,P,Nakada,T,Nandakumar,R,Nandi,A,Nasteva,I,Needham,M,Neri,N,Neubert,S,Neufeld,N,Neuner,M,Nguyen,T D,Nguyen-Mau,C,Nieswand,S,Niet,R,Nikitin,N,Nikodem,T,Novoselov,A,O'Hanlon,D P,Oblakowska-Mucha,A,Obraztsov,V,Ogilvy,S,Oldeman,R,Onderwater,C J G,Otalora Goicochea,J M,Otto,A,Owen,P,Oyanguren,A,Pais,P R,Palano,A,Palombo,F,Palutan,M,Panman,J,Papanestis,A,Pappagallo,M,Pappalardo,L L,Parker,W,Parkes,C,Passaleva,G,Pastore,A,Patel,G D,Patel,M,Patrignani,C,Pearce,A,Pellegrino,A,Penso,G,Pepe Altarelli,M,Perazzini,S,Perret,P,Pescatore,L,Petridis,K,Petrolini,A,Petrov,A,Petruzzo,M,Picatoste Olloqui,E,Pietrzyk,B,Pikies,M,Pinci,D,Pistone,A,Piucci,A,Playfer,S,Plo Casasus,M,Poikela,T,Polci,F,Poluektov,A,Polyakov,I,Polycarpo,E,Pomery,G J,Popov,A,Popov,D,Popovici,B,Poslavskii,S,Potterat,C,Price,E,Price,J D,Prisciandaro,J,Pritchard,A,Prouve,C,Pugatch,V,Puig Navarro,A,Punzi,G,Qian,W,Quagliani,R,Rachwal,B,Rademacker,J H,Rama,M,Ramos Pernas,M,Rangel,M S,Raniuk,I,Ratnikov,F,Raven,G,Redi,F,Reichert,S,Dos Reis,A C,Remon Alepuz,C,Renaudin,V,Ricciardi,S,Richards,S,Rihl,M,Rinnert,K,Rives Molina,V,Robbe,P,Rodrigues,A B,Rodrigues,E,Rodriguez Lopez,J A,Rodriguez Perez,P,Rogozhnikov,A,Roiser,S,Rollings,A,Romanovskiy,V,Romero Vidal,A,Ronayne,J W,Rotondo,M,Rudolph,M S,Ruf,T,Ruiz Valls,P,Saborido Silva,J J,Sadykhov,E,Sagidova,N,Saitta,B,Salustino Guimaraes,V,Sanchez Mayordomo,C,Sanmartin Sedes,B,Santacesaria,R,Santamarina Rios,C,Santimaria,M,Santovetti,E,Sarti,A,Satriano,C,Satta,A,Saunders,D M,Savrina,D,Schael,S,Schellenberg,M,Schiller,M,Schindler,H,Schlupp,M,Schmelling,M,Schmelzer,T,Schmidt,B,Schneider,O,Schopper,A,Schubert,K,Schubiger,M,Schune,M-H,Schwemmer,R,Sciascia,B,Sciubba,A,Semennikov,A,Sergi,A,Serra,N,Serrano,J,Sestini,L,Seyfert,P,Shapkin,M,Shapoval,I,Shcheglov,Y,Shears,T,Shekhtman,L,Shevchenko,V,Siddi,B G,Silva Coutinho,R,Silva de Oliveira,L,Simi,G,Simone,S,Sirendi,M,Skidmore,N,Skwarnicki,T,Smith,E,Smith,I T,Smith,J,Smith,M,Snoek,H,Soares Lavra,L,Sokoloff,M D,Soler,F J P,Souza De Paula,B,Spaan,B,Spradlin,P,Sridharan,S,Stagni,F,Stahl,M,Stahl,S,Stefko,P,Stefkova,S,Steinkamp,O,Stemmle,S,Stenyakin,O,Stevenson,S,Stoica,S,Stone,S,Storaci,B,Stracka,S,Straticiuc,M,Straumann,U,Sun,L,Sutcliffe,W,Swientek,K,Syropoulos,V,Szczekowski,M,Szumlak,T,T'Jampens,S,Tayduganov,A,Tekampe,T,Teklishyn,M,Tellarini,G,Teubert,F,Thomas,E,van Tilburg,J,Tilley,M J,Tisserand,V,Tobin,M,Tolk,S,Tomassetti,L,Tonelli,D,Topp-Joergensen,S,Toriello,F,Tournefier,E,Tourneur,S,Trabelsi,K,Traill,M,Tran,M T,Tresch,M,Trisovic,A,Tsaregorodtsev,A,Tsopelas,P,Tully,A,Tuning,N,Ukleja,A,Ustyuzhanin,A,Uwer,U,Vacca,C,Vagnoni,V,Valassi,A,Valat,S,Valenti,G,Vallier,A,Vazquez Gomez,R,Vazquez Regueiro,P,Vecchi,S,van Veghel,M,Velthuis,J J,Veltri,M,Veneziano,G,Venkateswaran,A,Vernet,M,Vesterinen,M,Viaud,B,Vieira,D,Vieites Diaz,M,Viemann,H,Vilasis-Cardona,X,Vitti,M,Volkov,V,Vollhardt,A,Voneki,B,Vorobyev,A,Vorobyev,V,Voß,C,de Vries,J A,Vázquez Sierra,C,Waldi,R,Wallace,C,Wallace,R,Walsh,J,Wang,J,Ward,D R,Wark,H M,Watson,N K,Websdale,D,Weiden,A,Whitehead,M,Wicht,J,Wilkinson,G,Wilkinson,M,Williams,M,Williams,M P,Williams,M,Williams,T,Wilson,F F,Wimberley,J,Wishahi,J,Wislicki,W,Witek,M,Wormser,G,Wotton,S A,Wraight,K,Wyllie,K,Xie,Y,Xing,Z,Xu,Z,Yang,Z,Yao,Y,Yin,H,Yu,J,Yuan,X,Yushchenko,O,Zarebski,K A,Zavertyaev,M,Zhang,L,Zhang,Y,Zhang,Y,Zhelezov,A,Zheng,Y,Zhu,X,Zhukov,V,Zucchelli,S
期刊：European Physical Journal C影响因子：4.800
时间：2017起止号：2017;77(4):224
doi：10.1140/epjc/s10052-017-4744-6

Abstract

A search is presented for massive long-lived particles decaying into a muon and two quarks. The dataset consists of proton-proton interactions at centre-of-mass energies of 7 and 8 TeV, corresponding to integrated luminosities of 1 and 2[Formula: see text], respectively. The analysis is performed assuming a set of production mechanisms with simple topologies, including the production of a Higgs-like particle decaying into two long-lived particles. The mass range from 20 to 80 [Formula: see text] and lifetimes from 5 to 100[Formula: see text] are explored. Results are also interpreted in terms of neutralino production in different R-Parity violating supersymmetric models, with masses in the 23-198 GeV/[Formula: see text] range. No excess above the background expectation is observed and upper limits are set on the production cross-section for various points in the parameter space of theoretical models.

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