Search for direct CP violation in D0→h-h+ modes using semileptonic B decays

The LHCb Collaboration

doi:10.1016/j.physletb.2013.04.061

Search for direct CP violation in D⁰→h^-h⁺ modes using semileptonic B decays

The LHCb Collaboration

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

63 Citations (Scopus)

Abstract

A search for direct CP violation in D⁰ →h^-h⁺ (where h = K or π) is presented using data corresponding to an integrated luminosity of 1.0fb^-1 collected in 2011 by LHCb in pp collisions at a centre-of-mass energy of 7 TeV. The analysis uses D0 mesons produced in inclusive semileptonic b-hadron decays to the D⁰μX nal state, where the charge of the accompanying muon is used to tag the avour of the D⁰ meson. The difference in the CP-violating asymmetries between the two decay channels is measured to be ΔA_CP = A_CP(K^-K⁺) - ACP ( π^-π⁺) = ( 0.49 ±0.30 (stat)± 0.14 (syst))%. This result does not conrm the evidence for direct CP violationinthecharmsectorreportedinother analyses.

Original language	English
Pages (from-to)	33-43
Number of pages	11
Journal	Physics Letters B
Volume	723
Issue number	1-3
DOIs	https://doi.org/10.1016/j.physletb.2013.04.061
Publication status	Published - 10 Jun 2013
Externally published	Yes

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10.1016/j.physletb.2013.04.061

Cite this

@article{e8568f271a7843f5a47ddf19af66e17c,

title = "Search for direct CP violation in D0→h-h+ modes using semileptonic B decays",

abstract = "A search for direct CP violation in D0 →h-h+ (where h = K or π) is presented using data corresponding to an integrated luminosity of 1.0fb-1 collected in 2011 by LHCb in pp collisions at a centre-of-mass energy of 7 TeV. The analysis uses D0 mesons produced in inclusive semileptonic b-hadron decays to the D0μX nal state, where the charge of the accompanying muon is used to tag the avour of the D0 meson. The difference in the CP-violating asymmetries between the two decay channels is measured to be ΔACP = ACP(K-K+) - ACP ( π-π+) = ( 0.49 ±0.30 (stat)± 0.14 (syst))%. This result does not conrm the evidence for direct CP violationinthecharmsectorreportedinother analyses.",

author = "R. Aaij and {Abellan Beteta}, C. and B. Adeva and M. Adinol and C. Adrover and A. Affolder and Z. Ajaltouni 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. Anderlini and J. Anderson and R. Andreassen and Appleby, {R. B.} and {Aquines Gutierrez}, O. and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and S. Bachmann and Back, {J. J.} and C. Baesso and V. Balagura and W. Baldini and Barlow, {R. J.} and C. Barschel and S. Barsuk and W. Barter and Bauer, {T. Th} and A. Bay and J. Beddow and I. Bediaga and S. Belogurov and K. Belous and I. Belyaev and E. Ben-Haim and M. Benayoun 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 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 Bowcock, {T. J.V.} and E. Bowen and C. Bozzi and T. Brambach and J. vandenBrand and J. Bressieux and D. Brett and M. Britsch and T. Britton and Brook, {N. H.} and H. Brown and I. Burducea and A. Bursche and G. Busetto and J. Buytaert and S. Cadeddu and O. Callot and M. Calvi and M. CalvoGomez and A. Camboni and P. Campana and D. CamporaPerez and A. Carbone and G. Carboni and R. Cardinale and A. Cardini and H. Carranza-Mejia and L. Carson and {Carvalho Akiba}, K. and G. Casse and M. Cattaneo and Ch Cauet and M. Charles and Ph Charpentier and P. Chen and N. Chiapolini and M. Chrzaszcz and K. Ciba and {Cid Vidal}, X. and G. Ciezarek and Clarke, {P. E.L.} and M. Clemencic and Cliff, {H. V.} and J. Closier and C. Coca and V. Coco and J. Cogan and E. Cogneras and P. Collins and A. Comerma-Montells and A. Contu and A. Cook and M. Coombes and S. Coquereau and G. Corti and B. Couturier and Cowan, {G. A.} and D. Craik and S. Cunliffe and R. Currie and C. D'Ambrosio and P. David and David, {P. N.Y.} and I. DeBonis and {De Bruyn}, K. and S. DeCapua and {De Cian}, M. and {De Miranda}, {J. M.} and {De Paula}, L. and W. DeSilva and {De Simone}, P. and D. Decamp and M. Deckenhoff and L. DelBuono and D. Derkach and O. Deschamps and F. Dettori and H. Dijkstra and M. Dogaru and S. Donleavy and F. Dordei and {Dosil Su{\'a}rez}, A. and D. Dossett and A. Dovbnya and F. Dupertuis and R. Dzhelyadin and A. Dziurda and A. Dzyuba and S. Easo and U. Egede and V. Egorychev and S. Eidelman and D. vanEijk and S. Eisenhardt and U. Eitschberger and R. Ekelhof and L. Eklund and I. ElRifai and Ch Elsasser and D. Elsby and A. Falabella and C. F{\"a}rber and G. Fardell and C. Farinelli and S. Farry and V. Fave and D. Ferguson and {Fernandez Albor}, V. and {Ferreira Rodrigues}, F. and M. Ferro-Luzzi and S. Filippov and M. Fiore and C. Fitzpatrick and M. Fontana and F. Fontanelli and R. Forty and O. Francisco and M. Frank and M. Frosini and S. Furcas and E. Furfaro and {Gallas Torreira}, A. and D. Galli and M. Gandelman and P. Gandini and J. Garofoli and P. Garosi and J. GarraTico and L. Garrido and C. Gaspar and R. Gauld and E. Gersabeck and M. Gersabeck and T. Gershon and Ph Ghez and V. Gibson and Gligorov, {V. V.} and C. G{\"o}bel and D. Golubkov and A. Golutvin and A. Gomes and H. Gordon and {Grabalosa G{\'a}ndara}, M. and {Graciani Diaz}, R. and {Granado Cardoso}, {L. A.} and E. Graug{\'e}s and A. Grecu and E. Greening and S. Gregson and O. Gr{\"u}nberg and B. Gui and E. Gushchin and Yu Guz and T. Gys and C. Hadjivasiliou and G. Haefeli and C. Haen and Haines, {S. C.} and S. Hall and T. Hampson and S. Hansmann-Menzemer and N. Harnew and Harnew, {S. T.} and J. Harrison and T. Hartmann and J. He and V. Heijne and K. Hennessy and P. Henrard and {Hernando Morata}, {J. A.} and {van Herwijnen}, E. and D. Hill and M. Hoballah and C. Hombach and P. Hopchev and W. Hulsbergen and P. Hunt and T. Huse and N. Hussain and D. Hutchcroft and D. Hynds and V. Iakovenko and M. Idzik and P. Ilten and {The LHCb Collaboration}",

year = "2013",

month = jun,

day = "10",

doi = "10.1016/j.physletb.2013.04.061",

language = "English",

volume = "723",

pages = "33--43",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier BV",

number = "1-3",

}

TY - JOUR

T1 - Search for direct CP violation in D0→h-h+ modes using semileptonic B decays

AU - Aaij, R.

AU - Abellan Beteta, C.

AU - Adeva, B.

AU - Adinol, M.

AU - Adrover, C.

AU - Affolder, A.

AU - Ajaltouni, Z.

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 - Anderlini, L.

AU - Anderson, J.

AU - Andreassen, R.

AU - Appleby, R. B.

AU - Aquines Gutierrez, O.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Bachmann, S.

AU - Back, J. J.

AU - Baesso, C.

AU - Balagura, V.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Bauer, T. Th

AU - Bay, A.

AU - Beddow, J.

AU - Bediaga, I.

AU - Belogurov, S.

AU - Belous, K.

AU - Belyaev, I.

AU - Ben-Haim, E.

AU - Benayoun, M.

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 - 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 - Bowcock, T. J.V.

AU - Bowen, E.

AU - Bozzi, C.

AU - Brambach, T.

AU - vandenBrand, J.

AU - Bressieux, J.

AU - Brett, D.

AU - Britsch, M.

AU - Britton, T.

AU - Brook, N. H.

AU - Brown, H.

AU - Burducea, I.

AU - Bursche, A.

AU - Busetto, G.

AU - Buytaert, J.

AU - Cadeddu, S.

AU - Callot, O.

AU - Calvi, M.

AU - CalvoGomez, M.

AU - Camboni, A.

AU - Campana, P.

AU - CamporaPerez, D.

AU - Carbone, A.

AU - Carboni, G.

AU - Cardinale, R.

AU - Cardini, A.

AU - Carranza-Mejia, H.

AU - Carson, L.

AU - Carvalho Akiba, K.

AU - Casse, G.

AU - Cattaneo, M.

AU - Cauet, Ch

AU - Charles, M.

AU - Charpentier, Ph

AU - Chen, P.

AU - Chiapolini, N.

AU - Chrzaszcz, M.

AU - Ciba, K.

AU - Cid Vidal, X.

AU - Ciezarek, G.

AU - Clarke, P. E.L.

AU - Clemencic, M.

AU - Cliff, H. V.

AU - Closier, J.

AU - Coca, C.

AU - Coco, V.

AU - Cogan, J.

AU - Cogneras, E.

AU - Collins, P.

AU - Comerma-Montells, A.

AU - Contu, A.

AU - Cook, A.

AU - Coombes, M.

AU - Coquereau, S.

AU - Corti, G.

AU - Couturier, B.

AU - Cowan, G. A.

AU - Craik, D.

AU - Cunliffe, S.

AU - Currie, R.

AU - D'Ambrosio, C.

AU - David, P.

AU - David, P. N.Y.

AU - DeBonis, I.

AU - De Bruyn, K.

AU - DeCapua, S.

AU - De Cian, M.

AU - De Miranda, J. M.

AU - De Paula, L.

AU - DeSilva, W.

AU - De Simone, P.

AU - Decamp, D.

AU - Deckenhoff, M.

AU - DelBuono, L.

AU - Derkach, D.

AU - Deschamps, O.

AU - Dettori, F.

AU - Dijkstra, H.

AU - Dogaru, M.

AU - Donleavy, S.

AU - Dordei, F.

AU - Dosil Suárez, A.

AU - Dossett, D.

AU - Dovbnya, A.

AU - Dupertuis, F.

AU - Dzhelyadin, R.

AU - Dziurda, A.

AU - Dzyuba, A.

AU - Easo, S.

AU - Egede, U.

AU - Egorychev, V.

AU - Eidelman, S.

AU - vanEijk, D.

AU - Eisenhardt, S.

AU - Eitschberger, U.

AU - Ekelhof, R.

AU - Eklund, L.

AU - ElRifai, I.

AU - Elsasser, Ch

AU - Elsby, D.

AU - Falabella, A.

AU - Färber, C.

AU - Fardell, G.

AU - Farinelli, C.

AU - Farry, S.

AU - Fave, V.

AU - Ferguson, D.

AU - Fernandez Albor, V.

AU - Ferreira Rodrigues, F.

AU - Ferro-Luzzi, M.

AU - Filippov, S.

AU - Fiore, M.

AU - Fitzpatrick, C.

AU - Fontana, M.

AU - Fontanelli, F.

AU - Forty, R.

AU - Francisco, O.

AU - Frank, M.

AU - Frosini, M.

AU - Furcas, S.

AU - Furfaro, E.

AU - Gallas Torreira, A.

AU - Galli, D.

AU - Gandelman, M.

AU - Gandini, P.

AU - Garofoli, J.

AU - Garosi, P.

AU - GarraTico, J.

AU - Garrido, L.

AU - Gaspar, C.

AU - Gauld, R.

AU - Gersabeck, E.

AU - Gersabeck, M.

AU - Gershon, T.

AU - Ghez, Ph

AU - Gibson, V.

AU - Gligorov, V. V.

AU - Göbel, C.

AU - Golubkov, D.

AU - Golutvin, A.

AU - Gomes, A.

AU - Gordon, H.

AU - Grabalosa Gándara, M.

AU - Graciani Diaz, R.

AU - Granado Cardoso, L. A.

AU - Graugés, E.

AU - Grecu, A.

AU - Greening, E.

AU - Gregson, S.

AU - Grünberg, O.

AU - Gui, B.

AU - Gushchin, E.

AU - Guz, Yu

AU - Gys, T.

AU - Hadjivasiliou, C.

AU - Haefeli, G.

AU - Haen, C.

AU - Haines, S. C.

AU - Hall, S.

AU - Hampson, T.

AU - Hansmann-Menzemer, S.

AU - Harnew, N.

AU - Harnew, S. T.

AU - Harrison, J.

AU - Hartmann, T.

AU - He, J.

AU - Heijne, V.

AU - Hennessy, K.

AU - Henrard, P.

AU - Hernando Morata, J. A.

AU - van Herwijnen, E.

AU - Hill, D.

AU - Hoballah, M.

AU - Hombach, C.

AU - Hopchev, P.

AU - Hulsbergen, W.

AU - Hunt, P.

AU - Huse, T.

AU - Hussain, N.

AU - Hutchcroft, D.

AU - Hynds, D.

AU - Iakovenko, V.

AU - Idzik, M.

AU - Ilten, P.

AU - The LHCb Collaboration

PY - 2013/6/10

Y1 - 2013/6/10

N2 - A search for direct CP violation in D0 →h-h+ (where h = K or π) is presented using data corresponding to an integrated luminosity of 1.0fb-1 collected in 2011 by LHCb in pp collisions at a centre-of-mass energy of 7 TeV. The analysis uses D0 mesons produced in inclusive semileptonic b-hadron decays to the D0μX nal state, where the charge of the accompanying muon is used to tag the avour of the D0 meson. The difference in the CP-violating asymmetries between the two decay channels is measured to be ΔACP = ACP(K-K+) - ACP ( π-π+) = ( 0.49 ±0.30 (stat)± 0.14 (syst))%. This result does not conrm the evidence for direct CP violationinthecharmsectorreportedinother analyses.

AB - A search for direct CP violation in D0 →h-h+ (where h = K or π) is presented using data corresponding to an integrated luminosity of 1.0fb-1 collected in 2011 by LHCb in pp collisions at a centre-of-mass energy of 7 TeV. The analysis uses D0 mesons produced in inclusive semileptonic b-hadron decays to the D0μX nal state, where the charge of the accompanying muon is used to tag the avour of the D0 meson. The difference in the CP-violating asymmetries between the two decay channels is measured to be ΔACP = ACP(K-K+) - ACP ( π-π+) = ( 0.49 ±0.30 (stat)± 0.14 (syst))%. This result does not conrm the evidence for direct CP violationinthecharmsectorreportedinother analyses.

UR - http://www.scopus.com/inward/record.url?scp=84878186536&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2013.04.061

DO - 10.1016/j.physletb.2013.04.061

M3 - Article

AN - SCOPUS:84878186536

VL - 723

SP - 33

EP - 43

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 1-3

ER -

Search for direct CP violation in D0→h-h+ modes using semileptonic B decays

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Search for direct CP violation in D⁰→h^-h⁺ modes using semileptonic B decays