Measurement of CP asymmetry in D0 → K−K+ and D0 → π−π+ decays

  title={Measurement of CP asymmetry in D0 → K−K+ and D0 → $\pi$−$\pi$+ decays},
  author={R. Aaij and Bernardo Adeva and Marco Adinolfi and A. A. Affolder and Ziad Ajaltouni and Johannes Albrecht and Federico Alessio and Michael Thomas Alexander and S. Ali and Georgy Alkhazov and Paula Alvarez Cartelle and A. A. Jr. Alves and S. Amato and Silvia Amerio and Y. Amhis and Liupan An and Lucio Anderlini and J. R. Anderson and Rolf E. Andreassen and Mirco Andreotti and Jason Emory Andrews and Robert B. Appleby and O. Aquines Gutierrez and Flavio Archilli and Alexander Artamonov and Marina Artuso and Elie Aslanides and Giulio Auriemma and Marouen Baalouch and Sebastian Bachmann and John Back and Alexey Badalov and Vladislav Balagura and Wander Baldini and R. J. Barlow and Colin Barschel and Sergey Barsuk and William Barter and Varvara Batozskaya and Th. S. Bauer and Aurelio Bay and Léo Beaucourt and John Keith Beddow and F Bedeschi and I. Bediaga and Sergey Belogurov and Konstantin Belous and I. Belyaev and E. Ben-Haim and Giovanni Bencivenni and Sean Benson and Jack Benton and Alexander V. Berezhnoy and Roland Bernet and Marc-Olivier Bettler and Martinus van Beuzekom and Anna Bie{\~n} and Simone Bifani and Thomas Bird and Andrea Bizzeti and P{\aa}l Marius Bj{\o}rnstad and Thomas Blake and Fr{\'e}d{\'e}ric Blanc and Johan Blouw and Steven Blusk and Valerio Bocci and Alexander E. Bondar and Nikolay Bondar and W M Bonivento and Silvia Borghi and Alessandra Borgia and M Borsato and Themis Bowcock and Espen Eie Bowen and C. Bozzi and T. Brambach and J. van den Brand and Jo{\"e}l Bressieux and David Brett and Markward Britsch and Thomas Britton and Jolanta Brodzicka and N. Brook and Henry Brown and Albert Bursche and G. Busetto and Jan A. N. Buytaert and Sandro Cadeddu and Roberto Calabrese and Marta Calvi and Miriam Calvo Gomez and Alessandro Camboni and Pierluigi Campana and D. H. Campora Perez and A. Carbone and Giovanni Carboni and Roberta Cardinale and Alessandro Cardini and H. Carranza-Mejia and Laurence Carson and Kazuyoshi Carvalho Akiba and Gianluigi Casse and Lorenzo Cassina and L. Castillo Garcia and Marco Cattaneo and Ch. Cauet and Riccardo Cenci and M. J. Charles and Ph. Charpentier and S. J. Chen and Shu Faye Cheung and Nicola Chiapolini and M. Chrzaszcz and Krzysztof Ciba and Xabier Cid Vidal and Gregory Max Ciezarek and P. E. L. Clarke and Marco Clemencic and Harry Victor Cliff and Joel Closier and Victor Coco and Julien Cogan and Eric Cogneras and Paula Collins and Albert Comerma-Montells and Andrea Contu and Andrew Cook and Matthew Coombes and Samuel Coquereau and Gloria Corti and Marco Corvo and Ian Counts and Benjamin Couturier and Greig A. Cowan and Daniel C. Craik and Melissa Maria Cruz Torres and Samuel Cunliffe and Robert Currie and Carmelo D’Ambrosio and Jeremy Peter Dalseno and P. N. Y. David and P. N. Y. David and Adam C. S. Davis and Kristof De Bruyn and Stefano de Capua and M. C. De Cian and Jussara M. de Miranda and Leandro De Paula and W. De Silva and Patrizia De Simone and Daniel Decamp and Mirko Deckenhoff and L. Del Buono and Nicolas D{\'e}l{\'e}age and Denis Derkach and Olivier Deschamps and Francesco Dettori and Angelo Di Canto and H. B. Dijkstra and S. Domingo Donleavy and Francesca Dordei and Marco Dorigo and {\'A}lvaro Dosil Su{\'a}rez and David Dossett and Anatoliy Dovbnya and Giulio Dujany and Fr{\'e}d{\'e}ric Dupertuis and Paolo Durante and Rustem Dzhelyadin 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 Ibrahim El Rifai and Ch. Elsasser and Scott Ely and Sevda Esen and Timothy Evans and Antonio Falabella and Christian F{\"a}rber and Chiara Farinelli and Nathanael Ashton Spencer Farley and Stephen Farry and D. P. S. Ferguson and V{\'i}ctor Fern{\'a}ndez Albor and Fernando Luiz Ferreira Rodrigues and Massimiliano Ferro-Luzzi and Sergey Filippov and Marco Fiore and Massimiliano Fiorini and Miroslaw Firlej and Conor Fitzpatrick and Tomasz Fiutowski and Marianna Fontana and Flavio Fontanelli and Roger W Forty and Oscar De Aguiar Francisco and M. Frank and Christopher M. Frei and Maddalena Frosini and J Fu and Emiliano Furfaro and Abraham Gallas Torreira and Domenico Galli and Stefano Gallorini and Silvia Gambetta and Miriam Gandelman and Paolo Gandini and Y. Y. Gao and Justin Garofoli and J. Garra Tico and Ll. Garrido and Clara Gaspar and R. Gauld and Laura Gavardi and Evelina Mihova Gersabeck and M. Gersabeck and Tim Gershon and Ph. Ghez and Alessio Gianelle and Sebastiana Gian{\`i} and Val Gibson and L. Giubega and Vladimir Vava Gligorov and Carla G{\"o}bel and Dmitry Golubkov and Andrey Golutvin and Aldrin V. Gomes and Hamish Gordon and Claudio Gotti and Marc Grabalosa G{\'a}ndara and R. Graciani Diaz and L. a. Granado Cardoso and Eugeni Grauges and Giacomo Graziani and Alexandru Tudor Grecu and Emma Greening and Sj Gregson and Peter Noel Griffith and Lucia Grillo and Oliver Gr{\"u}nberg and Bing Gui and Evgeny Gushchin and Yu. Guz and Thierry Gys and C. Hadjivasiliou and Guido Haefeli and Christophe Haen and Susan Carol Haines and Samuel Hall and Brian Hamilton and Thomas Hampson and X. Han and Stephanie Hansmann-Menzemer and Neville Harnew and Samuel Thomas Harnew and Jonathan Harrison and Thomas Hartmann and J. J. He and Timothy Daniel Head and Veerle Heijne and Karol Hennessy and Pierre Henrard and Louis Henry and Jose Angel Hernando Morata and Eric van Herwijnen and Miriam He{\ss} and Adl{\`e}ne Hicheur and Donal Hill and Mostafa Hoballah and P. H. Hopchev and Wouter Hulsbergen and Paul Hunt and Nazim Hussain and David Hutchcroft and Daniel Hynds and Marek Idzik and Philip Ilten and R. Jacobsson and Andreas Jaeger and J. W. Jalocha and Eddy Jans and P. Jaton and Abolhassan Jawahery and Marek Jeżabek and F. F. Jing and M. J. J. John and D. Johnson and C. Jones and Christian Joram and Beat Jost and Nathan Philip Jurik and Mohammed A. Kaballo and Sergii Kandybei and Walaa Kanso and Matthias Karacson and Till Moritz Karbach and Matthew Kelsey and Ian Richard Kenyon and Tjeerd Ketel and Basem Khanji and C Khurewathanakul and Suzanne Klaver and Olga Kochebina and Michael Kolpin and Ilya Komarov and R. F. Koopman and Patrick Koppenburg and M. Korolev and Alexandr Kozlinskiy and Leonid V. Kravchuk and Katharina Kreplin and Michal Kreps and Georg Alexander Krocker and Pavel Krokovny and Florian Kruse and Marcin Kucharczyk and Vasily Kudryavtsev and Krzysztof Kurek and Tengiz Kvaratskheliya and V. N. La Thi and Daniel Lacarr{\`e}re and G. D. Lafferty and Adriano Lai and D. Lambert and Robert W. Lambert and Elisa Lanciotti and G Lanfranchi and Christina Langenbruch and Benedikt Langhans and T. E. Latham and Cristina Lazzeroni and Renaud Le Gac and J. A. van Leerdam and J. P. Lees and R{\'e}gis Lef{\`e}vre and Alexander Leflat and J. Lefrancois and Stefano De Leo and O. Leroy and Tadeusz Lesiak and Blake Leverington and Y. Y. Li and M. Liles and Rolf Lindner and Christian Linn and Federica Lionetto and B. Liu and G H Liu and S. Lohn and Iain Longstaff and Jos{\'e} Helder Lopes and Neus L{\'o}pez-March and Peter Lowdon and H. Lu and Donatella Lucchesi and H. Luo and Anna Lupato and Eleonora Luppi and Oliver Lupton and F. Machefert and Irina Machikhiliyan and Florin C. Maciuc and Oleg Maev and Sneha Sirirshkumar Malde and G. Manca and Giampiero Mancinelli and Matteo Manzali and Jan Maratas and Jean François Marchand and Umberto Marini Bettolo Marconi and Carla Marin Benito and Pietro Marino and Raphael M{\"a}rki and J{\"o}rg Marks and Giuseppe Martellotti and Aur{\'e}lien Martens and A. Mart{\'i}n S{\'a}nchez and Michele Martinelli and D. Martinez Santos and Fernando Mart{\'i}nez Vidal and Danielle Martins Tostes and A. Massafferri and R. Matev and Zolt{\'a}n M{\'a}th{\'e} and Clara Matteuzzi and Alexander Mazurov and Michael McCann and James McCarthy and A. McNab and Ronan McNulty and B. McSkelly and B. T. Meadows and Frank Meier and Marco Meissner and Marcel Hubert Marie Merk and Diego Milan{\'e}s and M. -N. Minard and Niccol{\`o} Moggi and J. Molina Rodriguez and St'ephane Monteil and Dermot Moran and Mauro Morandin and Piotr Morawski and Alessandro Mord{\`a} and Michael J. Morello and Jakub Moron and Adam Benjamin Morris and Raymond Mountain and Franz Muheim and Katharina M{\"u}ller and Raluca Mureşan and Manuel Mussini and Britta Muster and Paras P. Naik and T. Nakada and Rajalakshmi Nandakumar and Irina Nasteva and M. D. Needham and N. Neri and Sebastian Neubert and Niko Neufeld and Max Neuner and Anh Duc Nguyen and T. D. Nguyen and Chung Nguyen-Mau and Mary Nicol and Valentin Niess and Ramon Niet and Nikolay Nikitin and Thomas Nikodem and Alexey A. Novoselov and Agnieszka Oblakowska-Mucha and Vladimir A. Obraztsov and Serena Oggero and Stephen Ogilvy and O. Okhrimenko and R. G. C. Oldeman and G. J. G. Onderwater and Monica Orlandea and Juan Otalora Goicochea and Patrick Haworth Owen and Arantza Oyanguren and Bilas Kanti Pal and A. Palano and Fernando Palombo and Matteo Palutan and Jaap Panman and Antonios Papanestis and Marco Pappagallo and Chris Parkes and Christopher J. Parkinson and Giovanni Passaleva and G. D. Patel and M. Patel and Claudia Patrignani and Antonio Pazos Alvarez and Alex Pearce and Antonio Pellegrino and Monica Pepe Altarelli and Stefano Perazzini and Eliseo P{\'e}rez Trigo and Pascal Perret and Mathieu Perrin-Terrin and Luca Pescatore and Erhan Pesen and Konstantinos Petridis and Alessandro Petrolini and E. Picatoste Olloqui and Boleslaw Pietrzyk and T. Pilař and Davide Pinci and Alessandro Pistone and Stephen M. Playfer and Maximo Plo Casasus and Francesco Polci and Anton Poluektov and Erica Polycarpo and Alexander Popov and Dmitry Popov and Bogdan Florin Popovici and C{\'e}dric Potterat and Andrew Powell and Jessica Prisciandaro and Adrian Pritchard and Claire Prouv{\'e} and Valery M. Pugatch and Albert Puig Navarro and Giovanni Punzi and Wenbin Qian and Bartolomiej Rachwal and Jonas Rademacker and Barinjaka Rakotomiaramanana and M. Rama},
  journal={Journal of High Energy Physics},
A bstractTime-integrated CP asymmetries in D0 decays to the final states K−K+ and π−π+ are measured using proton-proton collisions corresponding to 3fb−1 of integrated luminosity collected at centre-of-mass energies of 7 TeV and 8 TeV. The D0 mesons are produced in semileptonic b-hadron decays, where the charge of the accompanying muon is used to determine the initial flavour of the charm meson. The difference in CP asymmetries between the two final states is measured to be ΔACP=ACPK−K+−ACP… 

Measurement of indirect CP asymmetries in D0 → K−K+ and D0 → π−π+ decays using semileptonic B decays

A bstractTime-dependent CP asymmetries in the decay rates of the singly Cabibbo-suppressed decays D0 → K−K+ and D0 → π−π+ are measured in pp collision data corresponding to an integrated luminosity

Measurement of the ratio of branching fractions and difference in CP asymmetries of the decays B+ → J/ψπ+ and B+ → J/ψK+

A bstractThe ratio of branching fractions and the difference in CP asymmetries of the decays B+ → J/ψπ+ and B+ → J/ψK+ are measured using a data sample of pp collisions collected by the LHCb

Measurement of the CKM angle γ using B± → DK± with D → KS0π+π−, KS0K+K− decays

A bstractA binned Dalitz plot analysis of B± → DK± decays, with D→KS0π+π−$$ D\to {K}_{{}^{\mathrm{S}}}^0{\pi}^{+}{\pi}^{-} $$ and D→KS0K+K−$$ D\to {K}_{{}^{\mathrm{S}}}^0{K}^{+}{K}^{-} $$, is

Search for CP violation in D± → KS0K± and Ds± → KS0π± decays

A bstractA search for CP violation in Cabibbo-suppressed D± → KS0K± and Ds± → KS0π± decays is performed using pp collision data, corresponding to an integrated luminosity of 3 fb, recorded by the

Observation of CP Violation in Charm Decays.

The first observation of CP violation in the decay of charm hadrons is observed, where the measured value differs from zero by more than 5 standard deviations.

Measurement of CP observables in B± → DK*± decays using two- and four-body D final states

A bstractMeasurements of CP observables in B± → DK*± decays are presented, where D denotes a superposition of D0 and D¯0$$ {\overline{D}}^0 $$ meson states. Decays of the D meson to K−π+, K−K+, π−π+,

Measurement of the Charm-Mixing Parameter y_{CP}.

The charm-mixing parameter y_{CP} is measured to be in agreement with, and as precise as, the current world-average value of 0.57±0.13(stat)± 0.09(syst).

Observation of the doubly Cabibbo-suppressed decay Ξc+ → pϕ

A bstractThe doubly Cabibbo-suppressed decay Ξc+ → pϕ with ϕ → K+K− is observed for the first time, with a statistical significance of more than fifteen standard deviations. The data sample used in

Observation of the Λb0 → J/ψ pπ− decay

A bstractThe first observation of the Cabibbo-suppressed decay Λb0 → J/ψpπ− is reported using a data sample of proton-proton collisions at 7 and 8 TeV, corresponding to an integrated luminosity of 3

Measurement of CP violation parameters and polarisation fractions in Bs0→J/ψK¯∗0$$ {\mathrm{B}}_{\mathrm{s}}^0\to \mathrm{J}/\psi {\overline{\mathrm{K}}}^{\ast 0} $$ decays

A bstractThe first measurement of CP asymmetries in the decay Bs0→J/ψK¯∗8920$$ {B}_s^0\to J/\psi {\overline{\mathrm{K}}}^{\ast }{(892)}^0 $$ and an updated measurement of its branching fraction and



Precision measurement of D meson mass differences

A bstractUsing three- and four-body decays of D mesons produced in semileptonic b-hadron decays, precision measurements of D meson mass differences are made together with a measurement of the D0

Measurement of CP-violating asymmetries in D0→π +π - and D0→K +K - decays at CDF

We report on a measurement of CP-violating asymmetries (A{sub CP}) in the Cabibbo-suppressed D{sup 0} {yields} {pi}{sup +}{pi}{sup -} and D{sup 0} {yields} K{sup +}K{sup -} decays reconstructed in a

C P asymmetries in singly-Cabibbo-suppressed D decays to two pseudoscalar mesons

The LHCb Collaboration has recently reported evidence for a $CP$ asymmetry approaching the percent level in the difference between

Measurement of D0-D0 mixing parameters and search for CP violation using D0 → K+ π- decays.

The analysis uses data from proton-proton collisions at 7 and 8 TeV center-of-mass energies recorded by the LHCb experiment to determination the most precise determination of charm mixing parameters from a single experiment and shows no evidence for CP violation.

New physics and CP violation in singly Cabibbo suppressed D decays

We analyze various theoretical aspects of $CP$ violation in singly Cabibbo suppressed (SCS) $D$ meson decays, such as $D\ensuremath{\rightarrow}KK,\ensuremath{\pi}\ensuremath{\pi}$. In particular, we

Repercussions of flavour symmetry breaking on CP violation in D-meson decays

A bstractWe investigate to what extent the recently measured value for a non-vanishing direct CP asymmetry in D0 → K+K− and D0 → π+π− decays can be accommodated in the Standard Model (SM) or

Measurement of the difference in CP-violating asymmetries in D(0)→K(+)K(-) and D(0)→π(+)π(-) decays at CDF.

We report a measurement of the difference (ΔA(CP)) between time-integrated CP-violating asymmetries in D(0)→K(+)K(-) and D(0)→π(+)π(-) decays reconstructed in the full data set of proton-antiproton