Observation of CP Violation in Charm Decays.

  title={Observation of CP Violation in Charm Decays.},
  author={R. Aaij and C. Abell{\'a}n Beteta and Bernardo Adeva and Marco Adinolfi and Christine A. Aidala and Ziad Ajaltouni and Simon Akar and Pietro Albicocco and Johannes Albrecht and Federico Alessio and Michael Thomas Alexander and A. Alfonso Albero and Georgy Alkhazov and P. Alvarez Cartelle and A. A. Alves and S. Amato and Y. Amhis and Liupan An and Lucio Anderlini and Guido Andreassi and Mirco Andreotti and Jason Emory Andrews and Flavio Archilli and Philippe d'Argent and J. Arnau Romeu and Andrei Artamonov and Marina Artuso and Kenenbek Arzymatov and Elie Aslanides and Michele Atzeni and Benjamin Audurier and Sebastian Bachmann and John Back and Stephen Baker and Vladislav Balagura and Wander Baldini and Alexander V. Baranov and R. J. Barlow and Sergey Barsuk and William Barter and Matteo Bartolini and Fedor Baryshnikov and Varvara Batozskaya and Baasansuren Batsukh and Alexander Battig and Vincenzo Battista and Aurelio Bay and F Bedeschi and I. Bediaga and Andrew Beiter and Lennaert Bel and Samuel Belin and Nikita Beliy and Violaine Bell{\'e}e and Nicoletta Belloli and Konstantin Belous and I. Belyaev and E. Ben-Haim and Giovanni Bencivenni and Sean Benson and Sarah Beranek and Alexander V. Berezhnoy and Roland Bernet and Daniel Berninghoff and Emilie Bertholet and Alessandro Bertolin and Christopher Betancourt and Federico Betti and Marc-Olivier Bettler and Martin van Beuzekom and Ia. Bezshyiko and Srishti Bhasin and Jihyun Bhom and Martin Stefan Bieker and Simone Bifani and P. Billoir and Alex Birnkraut and Andrea Bizzeti and Mikkel Bj{\o}rn and Michele Piero Blago and Thomas Blake and Fr{\'e}d{\'e}ric Blanc and Steven Blusk and Dana Seman Bobulska and Valerio Bocci and O. Boente Garcia and Thomas Julian Boettcher and Alexander E. Bondar and Nikolay Bondar and Silvia Borghi and Maxim Borisyak and M Borsato and Meriem Boubdir and Themis Bowcock and C. Bozzi and Svende Annelies Braun and Michael Brodski and Jolanta Brodzicka and A. Brossa Gonzalo and Davide Brundu and Emma Buchanan and Annarita Buonaura and Christopher Burr and Albert Bursche and Jan A. N. Buytaert and Wiktor Byczynski and Sandro Cadeddu and H. Cai and Roberto Calabrese and Stefano Cal{\'i} and Ryan Calladine and Marta Calvi and M{\'i}riam Calvo G{\'o}mez and Alessandro Camboni and Pierluigi Campana and Daniel Hugo C{\'a}mpora P{\'e}rez and L. Capriotti and A. Carbone and Giovanni Carboni and Roberta Cardinale and Alessandro Cardini and Paolo Carniti and K. Carvalho Akiba and Gianluigi Casse and Marco Cattaneo and G Cavallero and Riccardo Cenci and Matthew George Chapman and Matthew John Charles and Ph. Charpentier and Georgios Chatzikonstantinidis and M. Chefdeville and Viktoriia Chekalina and C. H. Chen and S. J. Chen and S.-G. Chitic and Veronika Georgieva Chobanova and M. Chrzaszcz and Alexsei Chubykin and Paolo Ciambrone and Xabier Cid Vidal and Gregory Max Ciezarek and F. Cindolo and P. E. L. Clarke and Marco Clemencic and Harry Victor Cliff and Joel Closier and Victor Coco and Jo{\~a}o A. B. Coelho and Julien Cogan and Eric Cogneras and Lucian Nicolae Cojocariu and Paula Collins and Tommaso Colombo and Albert Comerma-Montells and Andrea Contu and George Coombs and Samuel Coquereau and Gloria Corti and C. M. Costa Sobral and Benjamin Couturier and Greig A. Cowan and Daniel C. Craik and A. Crocombe and M. Cruz Torres and Robert Currie and Carmelo D’Ambrosio and C. L. Da Silva and Elena Dall’Occo and Jeremy Peter Dalseno and A V Danilina and Adam C. S. Davis and Oscar Augusto de Aguiar Francisco and Kristof De Bruyn and Stefano de Capua and M. De Cian and J. M. De Miranda and Luciane Carvalho de Paula and M. De Serio and Patrizia de Simone and Cameron Thomas Dean and William Dean and Daniel Decamp and Luca Del Buono and Blaise Delaney and Hans Peter Dembinski and Moritz Demmer and Adam Mateusz Dendek and Denis Derkach and Olivier Deschamps and Fabrice Desse and Francesco Dettori and Biplab Dey and A Di Canto and Pasquale Di Nezza and Sergey Didenko and H. B. Dijkstra and Francesca Dordei and Marco Dorigo and A. Dosil Su{\'a}rez and Lauren Douglas and Anatoliy Dovbnya and Kārlis Dreimanis and Laurent Dufour and Giulio Dujany and Paolo Durante and J. Matthew Durham and Deepanwita Dutta and Rustem Dzhelyadin and Michał Dziewiecki and Agnieszka Dziurda and Alexey Dzyuba and Sajan Easo and Ulrik Egede and Victor Egorychev and Semen Eidelman and Stephan Eisenhardt and Ulrich Eitschberger and Robert Jan Ekelhof and Lars Eklund and Scott Ely and Alexandru Ene and Stephan Escher and Sevda Esen and Timothy Evans and Antonio Falabella and Nathanael Ashton Spencer Farley and Stephen Farry and Davide Fazzini and Placido Fernandez Declara and Antonio Fern{\'a}ndez Prieto and Frank Ferrari and L. Ferreira Lopes and F. Ferreira Rodrigues and S. Ferreres Sole and Massimiliano Ferro-Luzzi and Sergey Filippov and Rosa Anna Fini and Massimiliano Fiorini and Miroslaw Firlej and Conor Fitzpatrick and Tomasz Fiutowski and François Fleuret and Marianna Fontana and Flavio Fontanelli and Roger W Forty and Vinicius Franco Lima and M. Frank and Christopher M. Frei and J Fu and Wolfgang Funk and Christian F{\"a}rber and Mauricio F{\'e}o and Emmy Pauline Maria Gabriel and Abraham Gallas Torreira and Domenico Galli and Stefano Gallorini and Silvia Gambetta and Yuyue Gan and Miriam Gandelman and Paolo Gandini and Y. N. Gao and L. M. Garcia Martin and B. Garcia Plana and J. Garc{\'i}a Pardi{\~n}as and J. Garra Tic{\'o} and Ll. Garrido and David Gascon and Clara Gaspar and Giulio Gazzoni and David Gerick and Evelina Mihova Gersabeck and M. Gersabeck and Tim Gershon and Dawid Gerstel and Ph. Ghez and Val Gibson and Olivier G{\"o}ran Girard and P. Gironella Gironell and L. Giubega and Konstantin Gizdov and Vladimir Vava Gligorov and Dmitry Golubkov and Andrey Golutvin and Alvaro Gomes and Igor Vladimirovich Gorelov and Claudio Gotti and Ekaterina Govorkova and Jascha Peter Grabowski and Ricardo Graciani Diaz and L. A. Granado Cardoso and Eugeni Grauges and Elena Graverini and Giacomo Graziani and Alexandru Tudor Grecu and Roman Greim and Peter Noel Griffith and Lucia Grillo and Lukas Gruber and Barak Raimond Gruberg Cazon and C. Gu and X. Guo and Evgeny Gushchin and Andreas Guth and Yu. Guz and Thierry Gys and Carla G{\"o}bel and T. Hadavizadeh and C. Hadjivasiliou and Guido Haefeli and Christophe Haen and Susan Carol Haines and Brian Hamilton and Qundong Han and X. Han and Thomas Henry Hancock and Stephanie Hansmann-Menzemer and Neville Harnew and Thomas J. Harrison and Christoph Hasse and Mark Hatch and J. J. He and Malte Hecker and Kevin Heinicke and Arno Heister and Karol Hennessy and Louis Henry and Eric van Herwijnen and Johannes Heuel and Miriam He{\ss} and Adl{\`e}ne Hicheur and R. Hidalgo Charman and Donal Hill and Martha Hilton and Plamen Hristov Hopchev and J. B. Hu and W. L. Hu and W. Huang and Zachary Huard and Wouter Hulsbergen and Thibaud Humair and Mikhail Hushchyn and David Hutchcroft and Daniel Hynds and Philipp Ibis and Marek Idzik and Philip Ilten and Alexander Inglessi and Alexander Inyakin and Kuzma Ivshin and R. Jacobsson and S. Jakobsen and J. W. Jalocha and Eddy Jans and Brij Kishor Jashal and Abolhassan Jawahery and Feng Jiang and M. John and D. Johnson and C. Jones and Christian Joram and Beat Jost and Nathan Philip Jurik and Sergii Kandybei and Matthias Karacson and James Mwangi Kariuki and Sarah Karodia and Nikita Kazeev and Matthieu Kecke and Floris Keizer and Matthew Kelsey and M. Kenzie and Tjeerd Ketel and Basem Khanji and Anastasiia Kharisova and C Khurewathanakul and K. E. Kim and Thomas Kirn and Veronica Soelund Kirsebom and Suzanne Klaver and Konrad Klimaszewski and Serhii Koliiev and Michael Kolpin and Renata Kope{\vc}n{\'a} and Patrick Koppenburg and I. P. Kostiuk and Sofia Kotriakhova and Mohamad Kozeiha and Leonid V. Kravchuk and Michal Kreps and Felix Johannes Kress and Sophie Katharina Kretzschmar and Pavel Krokovny and Wojciech Krupa and Wojciech Krzemień and Wojciech Kucewicz and Marcin Kucharczyk and Vasily Kudryavtsev and Gerd J. Kunde and Axel Kevin Kuonen and Tengiz Kvaratskheliya and Daniel Lacarr{\`e}re and George Lafferty and Adriano Lai and Davide Lancierini and G Lanfranchi and Ch. Langenbruch and Thomas Latham and Cristina Lazzeroni and R. Le Gac and Alexander Leflat and R{\'e}gis Lef{\`e}vre and Florian Lemaitre and O. Leroy and Tadeusz Lesiak and Blake Leverington and H Li and P.-R. Li and X. Li and Y. Y. Li and Z. Li and Xiaoting Liang and Tatiana Likhomanenko and Rolf Lindner and P. Ling and Federica Lionetto and Vitalii Lisovskyi and G H Liu and X. Liu and David Loh and Angelo Loi and Iain Longstaff and Jos{\'e} Helder Lopes and Guillermo Loustau and G. Lovell and Donatella Lucchesi and M. Lucio Mart{\'i}nez and Y H Luo and Anna Lupato and Eleonora Luppi and Oliver Lupton and Alberto Lusiani and Xiaorui Lyu and R. C. Ma and F. Machefert and Florin C. Maciuc and Vladimir Macko and Patricia Mackowiak and Samuel Maddrell-Mander and Oleg Maev and Kevin Scott Maguire and Dmitrii Maisuzenko and Maciej Majewski and Sneha Sirirshkumar Malde and Bartosz Piotr Malecki and Alexander Malinin and Timofei Maltsev and Hanna Malygina and G. Manca and Giampiero Mancinelli and Daniele Marangotto and Jan Maratas and Jean François Marchand and Umberto Marini Bettolo Marconi and C. Marin Benito and Matthieu Marinangeli and Pietro Marino and J{\"o}rg Marks and P J Marshall and Giuseppe Martellotti and M. Martinelli and D. Mart{\'i}nez Santos and F. Martinez Vidal and A. Massafferri and Marcel Materok and R. Matev and A Cridland Mathad and Zolt{\'a}n M{\'a}th{\'e} and Viacheslav Matiunin and Clara Matteuzzi and Kara Renee Mattioli and Andrea Mauri and Emilie Maurice and Brice Emile Maurin and Michael McCann and A. McNab and Ronan McNulty and James Vincent Mead and Brian T. Meadows and C{\'e}dric M{\'e}aux and Nis Meinert and Dmytro Melnychuk and Marcel Hubert Marie Merk and Andrea Merli and E Michielin and Diego Milan{\'e}s and Edward James Millard and M. -N. Minard and Luca Minzoni and Dominik Stefan Mitzel},
  journal={Physical review letters},
  volume={122 21},
A search for charge-parity (CP) violation in D^{0}→K^{-}K^{+} and D^{0}→π^{-}π^{+} decays is reported, using pp collision data corresponding to an integrated luminosity of 5.9  fb^{-1} collected at a center-of-mass energy of 13 TeV with the LHCb detector. The flavor of the charm meson is inferred from the charge of the pion in D^{*}(2010)^{+}→D^{0}π^{+} decays or from the charge of the muon in B[over ¯]→D^{0}μ^{-}ν[over ¯]_{μ}X decays. The difference between the CP asymmetries in D^{0}→K^{-}K… 

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