# Observation of J/ψϕ Structures Consistent with Exotic States from Amplitude Analysis of B^{+}→J/ψϕK^{+} Decays.

@article{Aaij2017ObservationOJ, title={Observation of J/ψϕ Structures Consistent with Exotic States from Amplitude Analysis of B^\{+\}→J/ψϕK^\{+\} Decays.}, author={R. Aaij and B. Adeva and M. Adinolfi and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and S. Ali and G. Alkhazov and P. Alvarez Cartelle and A. Alves and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and J. E. Andrews and R. Appleby and O. Aquines Gutierrez and F. Archilli and P. Dargent and J. Arnau Romeu and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and I. Babuschkin and S. Bachmann and J. Back and A. Badalov and C. Baesso and W. Baldini and R. Barlow and C. Barschel and S. Barsuk and W. Barter and V. Batozskaya and B. Batsukh and V. Battista and A. Bay and L. Beaucourt and J. Beddow and F. Bedeschi and I. Bediaga and L. J. Bel and V. Bellee and N. Belloli and K. Belous and I. Belyaev and E. Ben-Haim and G. Bencivenni and S. Benson and J. Benton and A. Berezhnoy and R. Bernet and A. Bertolin and F. Betti and M. Bettler and M. van Beuzekom and I. Bezshyiko and S. Bifani and P. Billoir and T. Bird and A. Birnkraut and A. Bitadze and A. Bizzeti and T. Blake and F. Blanc and J. Blouw and S. Blusk and V. Bocci and T. Boettcher and A. Bondar and N. Bondar and W. Bonivento and A. Borgheresi and S. Borghi and M. Borisyak and M. Borsato and F. Bossu and M. Boubdir and T. Bowcock and E. Bowen and C. Bozzi and S. Braun and M. Britsch and T. Britton and J. Brodzicka and E. Buchanan and C. Burr and A. Bursche and J. Buytaert and S. Cadeddu and R. Calabrese and M. Calvi and M. Calvo Gomez and P. Campana and D. C. C{\'a}mpora P{\'e}rez and L. Capriotti and A. Carbone and G. Carboni and R. Cardinale and A. Cardini and P. Carniti and L. Carson and K. Carvalho Akiba and G. Casse and L. Cassina and L. Castillo Garcia and M. Cattaneo and C. Cauet and G. Cavallero and R. Cenci and M. Charles and P. Charpentier and G. Chatzikonstantinidis and M. Chefdeville and S. Chen and S. Cheung and V. Chobanova and M. Chrząszcz and X. Cid Vidal and G. Ciezarek and P. Clarke and M. Clemencic and H. V. Cliff and J. Closier and V. Coco and J. Cogan and E. Cogneras and V. Cogoni and L. Cojocariu and G. Collazuol and P. Collins and A. Comerma-Montells and A. Contu and A. Cook and S. Coquereau and G. Corti and M. Corvo and C. M. Costa Sobral and B. Couturier and G. Cowan and D. Craik and A. Crocombe and M. Cruz Torres and S. Cunliffe and R. Currie and C. D'Ambrosio and E. Dall’Occo and J. Dalseno and P. David and A. Davis and O. De Aguiar Francisco and K. De Bruyn and S. de Capua and M. De Cian and J. de Miranda and L. De Paula and M. De Serio and P. de Simone and C. Dean and D. Decamp and M. Deckenhoff and L. Del Buono and M. Demmer and D. Derkach and O. Deschamps and F. Dettori and B. Dey and A. Di Canto and H. Dijkstra and F. Dordei and M. Dorigo and A. Dosil Su{\'a}rez and A. Dovbnya and K. Dreimanis and L. Dufour and G. Dujany and K. Dungs and P. Durante and R. Dzhelyadin and A. Dziurda and A. Dzyuba and N. D{\'e}l{\'e}age and S. Easo and U. Egede and V. Egorychev and S. Eidelman and S. Eisenhardt and U. Eitschberger and R. Ekelhof and L. Eklund and C. Elsasser and S. Ely and S. Esen and H. Evans and T. Evans and A. Falabella and N. Farley and S. Farry and R. Fay and D. Fazzini and D. Ferguson and V. Fernandez Albor and F. Ferrari and F. Ferreira Rodrigues and M. Ferro-Luzzi and S. Filippov and R. A. Fini and M. Fiore and M. Fiorini and M. Firlej and C. Fitzpatrick and T. Fiutowski and F. Fleuret and K. Fohl and M. Fontana and F. Fontanelli and D. C. Forshaw and R. Forty and M. Frank and C. Frei and J. Fu and E. Furfaro and C. Faerber and A. Gallas Torreira and D. Galli and S. Gallorini and S. Gambetta and M. Gandelman and P. Gandini and Y. Gao and J. Garc{\'i}a Pardi{\~n}as and J. Garra Tico and L. Garrido and P. J. Garsed and D. Gascon and C. Gaspar and L. Gavardi and G. Gazzoni and D. Gerick and E. Gersabeck and M. Gersabeck and T. Gershon and P. Ghez and S. Gian{\`i} and V. Gibson and O. Girard and L. Giubega and K. Gizdov and V. Gligorov and D. Golubkov and A. Golutvin and A. Gomes and I. Gorelov and C. Gotti and M. Grabalosa G{\'a}ndara and R. Graciani Diaz and L. A. Granado Cardoso and E. Grauges and E. Graverini and G. Graziani and A. Grecu and P. Griffith and L. Grillo and B. R. Gruberg Cazon and O. Gr{\"u}nberg and E. Gushchin and Y. Guz and T. Gys and C. G{\"o}bel and T. Hadavizadeh and C. Hadjivasiliou and G. Haefeli and C. Haen and S. Haines and S. Hall and B. Hamilton and X. Han and S. Hansmann-Menzemer and N. Harnew and S. Harnew and J. Harrison and M. Hatch and J. He and T. Head and A. Heister and K. Hennessy and P. Henrard and L. Henry and J. A. Hernando Morata and E. van Herwijnen and M. Hess and A. Hicheur and D. Hill and P. H. Hopchev and W. Hulsbergen and T. Humair and M. Hushchyn and N. Hussain and D. Hutchcroft and M. Idzik and P. Ilten and R. Jacobsson and A. Jaeger and J. Jałocha and E. Jans and A. Jawahery and M. John and D. Johnson and C. Jones and C. Joram and B. Jost and N. Jurik and S. Kandybei and W. Kanso and M. Karacson and J. Kariuki and S. Karodia and M. Kecke and M. Kelsey and I. R. Kenyon and M. Kenzie and T. Ketel and E. Khairullin and B. Khanji and C. Khurewathanakul and T. Kirn and S. Klaver and K. Klimaszewski and S. Koliiev and M. Kolpin and I. Komarov and R. Koopman and P. Koppenburg and A. Kozachuk and M. Kozeiha and L. Kravchuk and K. Kreplin and M. Kreps and P. Krokovny and F. Kruse and W. Krzemien and W. Kucewicz and M. Kucharczyk and V. Kudryavtsev and A. Kuonen and K. Kurek and T. Kvaratskheliya and D. Lacarr{\`e}re and G. Lafferty and A. Lai and D. Lambert and G. Lanfranchi and C. Langenbruch and B. Langhans and T. Latham and C. Lazzeroni and R. Le Gac and J. V. van Leerdam and J. Lees and A. Leflat and J. Lefrançois and R. Lef{\`e}vre and F. Lema{\^i}tre and E. Lemos Cid and O. Leroy and T. Lesiak and B. Leverington and Y. Li and T. Likhomanenko and R. Lindner and C. Linn and F. Lionetto and B. Liu and X. Liu and D. Loh and I. Longstaff and J. Lopes and D. Lucchesi and M. Lucio Mart{\'i}nez and H. Luo and A. Lupato and E. Luppi and O. Lupton and A. Lusiani and X. Lyu and F. Machefert and F. Maciuc and O. Maev and K. Maguire and S. Malde and A. Malinin and T. Maltsev and G. Manca and G. Mancinelli and P. Manning and J. Maratas and J. Marchand and U. Marconi and C. Mar{\'i}n Benito and P. Mari{\~n}o and J. Marks and G. Martellotti and M. Martin and M. Martinelli and D. Mart{\'i}nez Santos and F. Martinez Vidal and D. Martins Tostes and L. Massacrier and A. Massafferri and R. Matev and A. Mathad and Z. M{\'a}th{\'e} and C. Matteuzzi and A. Mauri and B. Maurin and A. Mazurov and M. Mccann and J. McCarthy and A. Mcnab and R. Mcnulty and B. Meadows and F. Meier and M. Meissner and D. Melnychuk and M. Merk and A. Merli and E. Michielin and D. A. Milanes and M.-N. Minard and D. S. Mitzel and J. Molina Rodriguez and I. A. Monroy and S. Monteil and M. Morandin and P. Morawski and A. Mord{\`a} and M. Morello and J. Moroń and A. Morris and R. Mountain and F. Muheim and M. Mulder and M. Mussini and D. M{\"u}ller and J. Mueller and K. M{\"u}ller and V. M{\"u}ller and P. Naik and T. Nakada and R. Nandakumar and A. Nandi and I. Nasteva and M. Needham and N. Neri and S. Neubert and N. Neufeld and M. Neuner and A. D. Nguyen and C. Nguyen-Mau and S. Nieswand and R. Niet and N. Nikitin and T. Nikodem and A. Novoselov and D. O'Hanlon and A. Oblakowska-Mucha and V. Obraztsov and S. Ogilvy and R. Oldeman and C. Onderwater and J. M. Otalora Goicochea and A. Otto and P. Owen and A. Oyanguren and P. Pais and A. Palano and F. Palombo and M. Palutan and J. Panman and A. Papanestis and M. Pappagallo and L. Pappalardo and C. Pappenheimer and W. Parker and C. Parkes and G. Passaleva and A. Pastore and G. D. Patel and M. Patel and C. Patrignani and A. Pearce and A. Pellegrino and G. Penso}, journal={Physical review letters}, year={2017}, volume={118 2}, pages={ 022003 } }

The first full amplitude analysis of B^{+}→J/ψϕK^{+} with J/ψ→μ^{+}μ^{-}, ϕ→K^{+}K^{-} decays is performed with a data sample of 3 fb^{-1} of pp collision data collected at sqrt[s]=7 and 8 TeV with the LHCb detector. The data cannot be described by a model that contains only excited kaon states decaying into ϕK^{+}, and four J/ψϕ structures are observed, each with significance over 5 standard deviations. The quantum numbers of these structures are determined with significance of at least 4… CONTINUE READING

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