# Observation of D^{0} Meson Decays to π^{+}π^{-}μ^{+}μ^{-} and K^{+}K^{-}μ^{+}μ^{-} Final States.

@article{Aaij2017ObservationOD, title={Observation of D^\{0\} Meson Decays to π^\{+\}π^\{-\}μ^\{+\}μ^\{-\} and K^\{+\}K^\{-\}μ^\{+\}μ^\{-\} Final States.}, 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 A. Alfonso Albero 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 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 S. Baker and V. Balagura and W. Baldini and A. Baranov and R. Barlow and C. Barschel and S. Barsuk and W. Barter and F. Baryshnikov and V. Batozskaya and V. Battista and A. Bay and L. Beaucourt and J. Beddow and F. Bedeschi and I. Bediaga and A. Beiter and L. J. Bel and N. Beliy and V. Bellee and N. Belloli and K. Belous and I. Belyaev and E. Ben-Haim and G. Bencivenni and S. Benson and S. Beranek and A. Berezhnoy and R. Bernet and D. Berninghoff and E. Bertholet and A. Bertolin and C. Betancourt and F. Betti and M. Bettler and M. van Beuzekom and I. Bezshyiko and S. Bifani and P. Billoir and A. Birnkraut and A. Bitadze and A. Bizzeti and M. Bj{\o}rn 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 I. Bordyuzhin 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 T. Britton and J. Brodzicka and D. Brundu and E. Buchanan and C. Burr and A. Bursche and J. Buytaert and W. Byczynski and S. Cadeddu and H. Cai and R. Calabrese and R. Calladine and M. Calvi and M. Calvo Gomez and A. Camboni 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 G. Cavallero and R. Cenci and D. Chamont and M. Charles and P. Charpentier and G. Chatzikonstantinidis and M. Chefdeville and S. Chen and S. Cheung and S. Chitic and V. Chobanova and M. Chrząszcz and A. Chubykin and P. Ciambrone and X. Cid Vidal and G. Ciezarek and P. Clarke and M. Clemencic and H. V. Cliff and J. Closier and J. Cogan and E. Cogneras and V. Cogoni and L. Cojocariu and P. Collins and T. Colombo and A. Comerma-Montells and A. Contu and A. Cook and G. Coombs 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 R. Currie and C. D'Ambrosio and F. Da Cunha Marinho and E. Dall’Occo and J. Dalseno and A. Davis and O. De Aguiar Francisco 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 L. Del Buono and H. Dembinski and M. Demmer and A. Dendek and D. Derkach and O. Deschamps and F. Dettori and B. Dey and A. Di Canto and P. Di Nezza and H. Dijkstra and F. Dordei and M. Dorigo and A. Dosil Su{\'a}rez and L. Douglas and A. Dovbnya and K. Dreimanis and L. Dufour and G. Dujany and P. Durante and R. Dzhelyadin and M. Dziewiecki and A. Dziurda and A. Dzyuba and S. Easo and M. Ebert and U. Egede and V. Egorychev and S. Eidelman and S. Eisenhardt and U. Eitschberger and R. Ekelhof and L. Eklund 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 L. Federici and D. Ferguson and G. Fernandez and P. Fernandez Declara and A. Fernandez Prieto 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 V. Franco Lima and M. Frank and C. Frei and J. Fu and W. Funk and E. Furfaro and C. Faerber and E. Gabriel and A. Gallas Torreira and D. Galli and S. Gallorini and S. Gambetta and M. Gandelman and P. Gandini and Y. Gao and L. G. Garcia Martin 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 E. Govorkova and J. Grabowski and R. Graciani Diaz and L. A. Granado Cardoso and E. Grauges and E. Graverini and G. Graziani and A. Grecu and R. Greim and P. Griffith and L. Grillo and L. Gruber 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 B. Hamilton and X. Han and T. Hancock and S. Hansmann-Menzemer and N. Harnew and S. Harnew and J. Harrison and C. Hasse and M. Hatch and J. He and M. Hecker and K. Heinicke and A. Heister and K. Hennessy and P. Henrard and L. Henry and E. van Herwijnen and M. Hess and A. Hicheur and D. Hill and P. H. Hopchev and P. Hopchev and Z. Huard and W. Hulsbergen and T. Humair and M. Hushchyn and D. Hutchcroft and P. Ibis and M. Idzik and P. Ilten and R. Jacobsson and J. Jałocha and E. Jans and A. Jawahery and F. Jiang and M. John and D. Johnson and C. Jones and C. Joram and B. Jost and N. Jurik and S. Kandybei and M. Karacson and J. Kariuki and S. Karodia and N. Kazeev and M. Kecke and M. Kelsey 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 T. Klimkovich and S. Koliiev and M. Kolpin and I. Komarov and R. Kope{\vc}n{\'a} and P. Koppenburg and A. Kosmyntseva and S. Kotriakhova and M. Kozeiha 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 G. Lanfranchi and C. Langenbruch and T. Latham and C. Lazzeroni and R. Le Gac and J. V. van Leerdam 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 P. Li and T. Li and Y. Li and Z. Li and T. Likhomanenko and R. Lindner and F. Lionetto and V. Lisovskyi and X. Liu and D. Loh and A. Loi 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 V. Macko and P. Ma{\'c}kowiak and S. Maddrell-Mander and O. Maev and K. Maguire and D. Maisuzenko and M. Majewski and S. Malde and A. Malinin and T. Maltsev and G. Manca and G. Mancinelli and P. Manning and D. Marangotto and J. Maratas and J. Marchand and U. Marconi and C. Mar{\'i}n Benito and M. Marinangeli and P. Marino 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 E. Maurice and B. Maurin and A. Mazurov and M. Mccann and A. Mcnab and R. Mcnulty and J. Mead and B. Meadows and C. M{\'e}aux and F. Meier and N. Meinert and D. Melnychuk and M. Merk and A. Merli and E. Michielin and D. A. Milanes and E. Millard and M.-N. Minard and L. Minzoni and D. S. Mitzel and A. Mogini and J. Molina Rodriguez and T. Mombacher and I. A. Monroy and S. Monteil and M. Morandin and M. Morello and O. Morgunova and J. Moroń and A. Morris and R. Mountain and F. Muheim and M. Mulder 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}, journal={Physical review letters}, year={2017}, volume={119 18}, pages={ 181805 } }

The first observation of the D^{0}→π^{+}π^{-}μ^{+}μ^{-} and D^{0}→K^{+}K^{-}μ^{+}μ^{-} decays is reported using a sample of proton-proton collisions collected by LHCb at a center-of-mass energy of 8 TeV, and corresponding to 2 fb^{-1} of integrated luminosity. The corresponding branching fractions are measured using as normalization the decay D^{0}→K^{-}π^{+}[μ^{+}μ^{-}]_{ρ^{0}/ω}, where the two muons are consistent with coming from the decay of a ρ^{0} or ω meson. The results are B(D^{0… CONTINUE READING

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