Search for CP violation in D0→π-π+π0decays with the energy test

The LHCb Collaboration

doi:10.1016/j.physletb.2014.11.043

Search for CP violation in D⁰→π^-π⁺π⁰decays with the energy test

The LHCb Collaboration

Research output: Contribution to journal › Article › Research › peer-review

44 Citations (Scopus)

Abstract

A search for time-integrated CP violation in the Cabibbo-suppressed decay D⁰→π^-π⁺π⁰is performed using for the first time an unbinned model-independent technique known as the energy test. Using proton-proton collision data, corresponding to an integrated luminosity of 2.0fb^-1collected by the LHCb detector at a centre-of-mass energy of s=8TeV, the world's best sensitivity to CP violation in this decay is obtained. The data are found to be consistent with the hypothesis of CP symmetry with a p-value of (2.6±0.5)%.

Original language	English
Pages (from-to)	158-167
Number of pages	10
Journal	Physics Letters B
Volume	740
DOIs	https://doi.org/10.1016/j.physletb.2014.11.043
Publication status	Published - 8 Dec 2015
Externally published	Yes

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10.1016/j.physletb.2014.11.043

284494702-oaFinal published version, 1.56 MB

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@article{d48d46ba4377415cac1317a8b8c12891,

title = "Search for CP violation in D0→π-π+π0decays with the energy test",

abstract = "A search for time-integrated CP violation in the Cabibbo-suppressed decay D0→π-π+π0is performed using for the first time an unbinned model-independent technique known as the energy test. Using proton-proton collision data, corresponding to an integrated luminosity of 2.0fb-1collected by the LHCb detector at a centre-of-mass energy of s=8TeV, the world's best sensitivity to CP violation in this decay is obtained. The data are found to be consistent with the hypothesis of CP symmetry with a p-value of (2.6±0.5)%.",

author = "R. Aaij and B. Adeva and M. Adinolfi and A. Affolder and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and S. Ali and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and J. Anderson and R. Andreassen and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and {Aquines Gutierrez}, O. and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and S. Bachmann and Back, {J. J.} and A. Badalov and C. Baesso and W. Baldini and Barlow, {R. J.} and C. Barschel and S. Barsuk and W. Barter and V. Batozskaya and V. Battista and A. Bay and L. Beaucourt and J. Beddow and F. Bedeschi and I. Bediaga and S. Belogurov 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 Bettler, {M. O.} and {van Beuzekom}, M. and A. Bien and S. Bifani and T. Bird and A. Bizzeti and Bj{\o}rnstad, {P. M.} and T. Blake and F. Blanc and J. Blouw and S. Blusk and V. Bocci and A. Bondar and N. Bondar and W. Bonivento and S. Borghi and A. Borgia and M. Borsato and Bowcock, {T. J.V.} and E. Bowen and C. Bozzi and T. Brambach and D. Brett and M. Britsch and T. Britton and J. Brodzicka and Brook, {N. H.} and H. Brown and A. Bursche and J. Buytaert and S. Cadeddu and R. Calabrese and M. Calvi and {Calvo Gomez}, M. and P. Campana and {Campora Perez}, D. and A. Carbone and G. Carboni and R. Cardinale and A. Cardini and L. Carson and {Carvalho Akiba}, K. and G. Casse and L. Cassina and {Castillo Garcia}, L. and M. Cattaneo and Ch Cauet and R. Cenci and M. Charles and Ph Charpentier and M. Chefdeville and S. Chen and Cheung, {S. F.} and N. Chiapolini and M. Chrzaszcz and {Cid Vidal}, X. and G. Ciezarek and Clarke, {P. E.L.} and M. Clemencic and Cliff, {H. V.} 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 M. Coombes and S. Coquereau and G. Corti and M. Corvo and I. Counts and B. Couturier and Cowan, {G. A.} and Craik, {D. C.} and Crocombe, {A. C.} and {Cruz Torres}, M. and S. Cunliffe and R. Currie and C. D'Ambrosio and J. Dalseno and P. David and David, {P. N.Y.} and A. Davis and {De Bruyn}, K. and {De Capua}, S. and {De Cian}, M. and {De Miranda}, {J. M.} and {De Paula}, L. and {De Silva}, W. and {De Simone}, P. and Dean, {C. T.} and D. Decamp and M. Deckenhoff and {Del Buono}, L. and N. D{\'e}l{\'e}age and D. Derkach and O. Deschamps and F. Dettori and {Di Canto}, A. and H. Dijkstra and S. Donleavy and F. Dordei and M. Dorigo and {Dosil Su{\'a}rez}, A. and D. Dossett and A. Dovbnya and K. Dreimanis and G. Dujany and F. Dupertuis and P. Durante and R. Dzhelyadin and A. Dziurda and A. Dzyuba 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 {El Rifai}, I. and Ch Elsasser and S. Ely and S. Esen and Evans, {H. M.} and T. Evans and A. Falabella and C. F{\"a}rber and C. Farinelli and N. Farley and S. Farry and R. Fay and D. Ferguson and {Fernandez Albor}, V. and {Ferreira Rodrigues}, F. and M. Ferro-Luzzi and S. Filippov and M. Fiore and M. Fiorini and M. Firlej and C. Fitzpatrick and T. Fiutowski and P. Fol and M. Fontana and F. Fontanelli and R. Forty and O. Francisco and M. Frank and C. Frei and M. Frosini and J. Fu and E. Furfaro and {Gallas Torreira}, A. and D. Galli and S. Gallorini and S. Gambetta and M. Gandelman and P. Gandini and Y. Gao and {Garc{\'i}a Pardi{\~n}as}, J. and J. Garofoli and {Garra Tico}, J. and L. Garrido and D. Gascon and C. Gaspar and R. Gauld and L. Gavardi and A. Geraci and E. Gersabeck and M. Gersabeck and T. Gershon and Ph Ghez and A. Gianelle and S. Gianiỳ and V. Gibson and L. Giubega and Gligorov, {V. V.} and C. G{\"o}bel and D. Golubkov and A. Golutvin and A. Gomes and C. Gotti and {Grabalosa G{\'a}ndara}, M. and {Graciani Diaz}, R. and {Granado Cardoso}, {L. A.} and E. Graug{\'e}s and E. Graverini and G. Graziani and A. Grecu and {The LHCb Collaboration}",

year = "2015",

month = dec,

day = "8",

doi = "10.1016/j.physletb.2014.11.043",

language = "English",

volume = "740",

pages = "158--167",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Search for CP violation in D0→π-π+π0decays with the energy test

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Affolder, A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Ali, S.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amerio, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Anderson, J.

AU - Andreassen, R.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Aquines Gutierrez, O.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Bachmann, S.

AU - Back, J. J.

AU - Badalov, A.

AU - Baesso, C.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Batozskaya, V.

AU - Battista, V.

AU - Bay, A.

AU - Beaucourt, L.

AU - Beddow, J.

AU - Bedeschi, F.

AU - Bediaga, I.

AU - Belogurov, S.

AU - Belous, K.

AU - Belyaev, I.

AU - Ben-Haim, E.

AU - Bencivenni, G.

AU - Benson, S.

AU - Benton, J.

AU - Berezhnoy, A.

AU - Bernet, R.

AU - Bettler, M. O.

AU - van Beuzekom, M.

AU - Bien, A.

AU - Bifani, S.

AU - Bird, T.

AU - Bizzeti, A.

AU - Bjørnstad, P. M.

AU - Blake, T.

AU - Blanc, F.

AU - Blouw, J.

AU - Blusk, S.

AU - Bocci, V.

AU - Bondar, A.

AU - Bondar, N.

AU - Bonivento, W.

AU - Borghi, S.

AU - Borgia, A.

AU - Borsato, M.

AU - Bowcock, T. J.V.

AU - Bowen, E.

AU - Bozzi, C.

AU - Brambach, T.

AU - Brett, D.

AU - Britsch, M.

AU - Britton, T.

AU - Brodzicka, J.

AU - Brook, N. H.

AU - Brown, H.

AU - Bursche, A.

AU - Buytaert, J.

AU - Cadeddu, S.

AU - Calabrese, R.

AU - Calvi, M.

AU - Calvo Gomez, M.

AU - Campana, P.

AU - Campora Perez, D.

AU - Carbone, A.

AU - Carboni, G.

AU - Cardinale, R.

AU - Cardini, A.

AU - Carson, L.

AU - Carvalho Akiba, K.

AU - Casse, G.

AU - Cassina, L.

AU - Castillo Garcia, L.

AU - Cattaneo, M.

AU - Cauet, Ch

AU - Cenci, R.

AU - Charles, M.

AU - Charpentier, Ph

AU - Chefdeville, M.

AU - Chen, S.

AU - Cheung, S. F.

AU - Chiapolini, N.

AU - Chrzaszcz, M.

AU - Cid Vidal, X.

AU - Ciezarek, G.

AU - Clarke, P. E.L.

AU - Clemencic, M.

AU - Cliff, H. V.

AU - Closier, J.

AU - Coco, V.

AU - Cogan, J.

AU - Cogneras, E.

AU - Cogoni, V.

AU - Cojocariu, L.

AU - Collazuol, G.

AU - Collins, P.

AU - Comerma-Montells, A.

AU - Contu, A.

AU - Cook, A.

AU - Coombes, M.

AU - Coquereau, S.

AU - Corti, G.

AU - Corvo, M.

AU - Counts, I.

AU - Couturier, B.

AU - Cowan, G. A.

AU - Craik, D. C.

AU - Crocombe, A. C.

AU - Cruz Torres, M.

AU - Cunliffe, S.

AU - Currie, R.

AU - D'Ambrosio, C.

AU - Dalseno, J.

AU - David, P.

AU - David, P. N.Y.

AU - Davis, A.

AU - De Bruyn, K.

AU - De Capua, S.

AU - De Cian, M.

AU - De Miranda, J. M.

AU - De Paula, L.

AU - De Silva, W.

AU - De Simone, P.

AU - Dean, C. T.

AU - Decamp, D.

AU - Deckenhoff, M.

AU - Del Buono, L.

AU - Déléage, N.

AU - Derkach, D.

AU - Deschamps, O.

AU - Dettori, F.

AU - Di Canto, A.

AU - Dijkstra, H.

AU - Donleavy, S.

AU - Dordei, F.

AU - Dorigo, M.

AU - Dosil Suárez, A.

AU - Dossett, D.

AU - Dovbnya, A.

AU - Dreimanis, K.

AU - Dujany, G.

AU - Dupertuis, F.

AU - Durante, P.

AU - Dzhelyadin, R.

AU - Dziurda, A.

AU - Dzyuba, A.

AU - Easo, S.

AU - Egede, U.

AU - Egorychev, V.

AU - Eidelman, S.

AU - Eisenhardt, S.

AU - Eitschberger, U.

AU - Ekelhof, R.

AU - Eklund, L.

AU - El Rifai, I.

AU - Elsasser, Ch

AU - Ely, S.

AU - Esen, S.

AU - Evans, H. M.

AU - Evans, T.

AU - Falabella, A.

AU - Färber, C.

AU - Farinelli, C.

AU - Farley, N.

AU - Farry, S.

AU - Fay, R.

AU - Ferguson, D.

AU - Fernandez Albor, V.

AU - Ferreira Rodrigues, F.

AU - Ferro-Luzzi, M.

AU - Filippov, S.

AU - Fiore, M.

AU - Fiorini, M.

AU - Firlej, M.

AU - Fitzpatrick, C.

AU - Fiutowski, T.

AU - Fol, P.

AU - Fontana, M.

AU - Fontanelli, F.

AU - Forty, R.

AU - Francisco, O.

AU - Frank, M.

AU - Frei, C.

AU - Frosini, M.

AU - Fu, J.

AU - Furfaro, E.

AU - Gallas Torreira, A.

AU - Galli, D.

AU - Gallorini, S.

AU - Gambetta, S.

AU - Gandelman, M.

AU - Gandini, P.

AU - Gao, Y.

AU - García Pardiñas, J.

AU - Garofoli, J.

AU - Garra Tico, J.

AU - Garrido, L.

AU - Gascon, D.

AU - Gaspar, C.

AU - Gauld, R.

AU - Gavardi, L.

AU - Geraci, A.

AU - Gersabeck, E.

AU - Gersabeck, M.

AU - Gershon, T.

AU - Ghez, Ph

AU - Gianelle, A.

AU - Gianiỳ, S.

AU - Gibson, V.

AU - Giubega, L.

AU - Gligorov, V. V.

AU - Göbel, C.

AU - Golubkov, D.

AU - Golutvin, A.

AU - Gomes, A.

AU - Gotti, C.

AU - Grabalosa Gándara, M.

AU - Graciani Diaz, R.

AU - Granado Cardoso, L. A.

AU - Graugés, E.

AU - Graverini, E.

AU - Graziani, G.

AU - Grecu, A.

AU - The LHCb Collaboration

PY - 2015/12/8

Y1 - 2015/12/8

N2 - A search for time-integrated CP violation in the Cabibbo-suppressed decay D0→π-π+π0is performed using for the first time an unbinned model-independent technique known as the energy test. Using proton-proton collision data, corresponding to an integrated luminosity of 2.0fb-1collected by the LHCb detector at a centre-of-mass energy of s=8TeV, the world's best sensitivity to CP violation in this decay is obtained. The data are found to be consistent with the hypothesis of CP symmetry with a p-value of (2.6±0.5)%.

AB - A search for time-integrated CP violation in the Cabibbo-suppressed decay D0→π-π+π0is performed using for the first time an unbinned model-independent technique known as the energy test. Using proton-proton collision data, corresponding to an integrated luminosity of 2.0fb-1collected by the LHCb detector at a centre-of-mass energy of s=8TeV, the world's best sensitivity to CP violation in this decay is obtained. The data are found to be consistent with the hypothesis of CP symmetry with a p-value of (2.6±0.5)%.

UR - http://www.scopus.com/inward/record.url?scp=84983580870&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2014.11.043

DO - 10.1016/j.physletb.2014.11.043

M3 - Article

AN - SCOPUS:84983580870

SN - 0370-2693

VL - 740

SP - 158

EP - 167

JO - Physics Letters B

JF - Physics Letters B

ER -

Search for CP violation in D0→π-π+π0decays with the energy test

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Search for CP violation in D⁰→π^-π⁺π⁰decays with the energy test