A model-independent Dalitz plot analysis of B±→DK± with D→KS0h+h- (h=π, K) decays and constraints on the CKM angle γ

The LHCb Collaboration

doi:10.1016/j.physletb.2012.10.020

A model-independent Dalitz plot analysis of B^±→DK^± with D→KS0h+h- (h=π, K) decays and constraints on the CKM angle γ

The LHCb Collaboration

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

48 Citations (Scopus)

Abstract

A binned Dalitz plot analysis of B^±→DK^± decays, with D→KS0π+π- and D→KS0K+K-, is performed to measure the CP-violating observables x_± and y_± which are sensitive to the CKM angle γ. The analysis exploits 1.0 fb^-1 of data collected by the LHCb experiment. The study makes no model-based assumption on the variation of the strong phase of the D decay amplitude over the Dalitz plot, but uses measurements of this quantity from CLEO-c as input. The values of the parameters are found to be x_-=(0.0±4.3±1.5±0.6)×10^-2, y_-=(2.7±5.2±0.8±2.3)×10^-2, x₊=(-10.3±4.5±1.8±1.4)×10^-2 and y₊=(-0.9±3.7±0.8±3.0)×10^-2. The first, second, and third uncertainties are the statistical, the experimental systematic, and the error associated with the precision of the strong-phase parameters measured at CLEO-c, respectively. These results correspond to γ=(44-38+43)°, with a second solution at γ→γ+180°, and r_B=0.07±0.04, where r_B is the ratio between the suppressed and favoured B decay amplitudes.

Original language	English
Pages (from-to)	43-55
Number of pages	13
Journal	Physics Letters B
Volume	718
Issue number	1
DOIs	https://doi.org/10.1016/j.physletb.2012.10.020
Publication status	Published - 15 Nov 2012
Externally published	Yes

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10.1016/j.physletb.2012.10.020

Cite this

@article{b89b7d1200b24586a928e56d8e54842e,

title = "A model-independent Dalitz plot analysis of B±→DK± with D→KS0h+h- (h=π, K) decays and constraints on the CKM angle γ",

abstract = "A binned Dalitz plot analysis of B±→DK± decays, with D→KS0π+π- and D→KS0K+K-, is performed to measure the CP-violating observables x± and y± which are sensitive to the CKM angle γ. The analysis exploits 1.0 fb-1 of data collected by the LHCb experiment. The study makes no model-based assumption on the variation of the strong phase of the D decay amplitude over the Dalitz plot, but uses measurements of this quantity from CLEO-c as input. The values of the parameters are found to be x-=(0.0±4.3±1.5±0.6)×10-2, y-=(2.7±5.2±0.8±2.3)×10-2, x+=(-10.3±4.5±1.8±1.4)×10-2 and y+=(-0.9±3.7±0.8±3.0)×10-2. The first, second, and third uncertainties are the statistical, the experimental systematic, and the error associated with the precision of the strong-phase parameters measured at CLEO-c, respectively. These results correspond to γ=(44-38+43)°, with a second solution at γ→γ+180°, and rB=0.07±0.04, where rB is the ratio between the suppressed and favoured B decay amplitudes.",

author = "R. Aaij and {Abellan Beteta}, C. and A. Adametz and B. Adeva and M. Adinolfi 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 Y. Amhis and L. Anderlini and J. Anderson 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 W. Baldini and Barlow, {R. J.} and C. Barschel and S. Barsuk and W. Barter and A. Bates and Th Bauer 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 T. Blake and F. Blanc and C. Blanks and J. Blouw and S. Blusk and A. Bobrov and V. Bocci and A. Bondar and N. Bondar and W. Bonivento and S. Borghi and A. Borgia and Bowcock, {T. J.V.} and C. Bozzi and T. Brambach and {van den Brand}, J. and J. Bressieux and D. Brett and M. Britsch and T. Britton and Brook, {N. H.} and H. Brown and A. B{\"u}chler-Germann and I. Burducea and A. Bursche and J. Buytaert and S. Cadeddu and O. Callot and M. Calvi and {Calvo Gomez}, M. and A. Camboni and P. Campana and A. Carbone and G. Carboni and R. Cardinale and A. Cardini 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 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 {De Bonis}, I. and {De Bruyn}, K. and {De Capua}, S. and {De Cian}, M. and {De Miranda}, {J. M.} and {De Paula}, L. and {De Simone}, P. and D. Decamp and M. Deckenhoff and H. Degaudenzi and {Del Buono}, L. and C. Deplano and D. Derkach and O. Deschamps and F. Dettori and {Di Canto}, A. and J. Dickens and H. Dijkstra and {Diniz Batista}, P. and {Domingo Bonal}, F. 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 {van Eijk}, D. and S. Eisenhardt and R. Ekelhof and L. Eklund and {El Rifai}, I. and Ch Elsasser and D. Elsby and {Esperante Pereira}, D. and A. Falabella and C. F{\"a}rber and G. Fardell and C. Farinelli and S. Farry and V. Fave and {Fernandez Albor}, V. and {Ferreira Rodrigues}, F. and M. Ferro-Luzzi and S. Filippov and C. Fitzpatrick and M. Fontana and F. Fontanelli and R. Forty and O. Francisco and M. Frank and C. Frei and M. Frosini and S. Furcas and {Gallas Torreira}, A. and D. Galli and M. Gandelman and P. Gandini and Y. Gao and Garnier, {J. C.} and J. Garofoli and P. Garosi and {Garra Tico}, J. 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 G. Graziani 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 Harrison, {P. F.} 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 E. Hicks and D. Hill and M. Hoballah and P. Hopchev and W. Hulsbergen and P. Hunt and T. Huse and N. Hussain and D. Hutchcroft and {The LHCb Collaboration}",

year = "2012",

month = nov,

day = "15",

doi = "10.1016/j.physletb.2012.10.020",

language = "English",

volume = "718",

pages = "43--55",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier BV",

number = "1",

}

TY - JOUR

T1 - A model-independent Dalitz plot analysis of B±→DK± with D→KS0h+h- (h=π, K) decays and constraints on the CKM angle γ

AU - Aaij, R.

AU - Abellan Beteta, C.

AU - Adametz, A.

AU - Adeva, B.

AU - Adinolfi, 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 - Amhis, Y.

AU - Anderlini, L.

AU - Anderson, J.

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 - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Bates, A.

AU - Bauer, 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 - Blake, T.

AU - Blanc, F.

AU - Blanks, C.

AU - Blouw, J.

AU - Blusk, S.

AU - Bobrov, A.

AU - Bocci, V.

AU - Bondar, A.

AU - Bondar, N.

AU - Bonivento, W.

AU - Borghi, S.

AU - Borgia, A.

AU - Bowcock, T. J.V.

AU - Bozzi, C.

AU - Brambach, T.

AU - van den Brand, J.

AU - Bressieux, J.

AU - Brett, D.

AU - Britsch, M.

AU - Britton, T.

AU - Brook, N. H.

AU - Brown, H.

AU - Büchler-Germann, A.

AU - Burducea, I.

AU - Bursche, A.

AU - Buytaert, J.

AU - Cadeddu, S.

AU - Callot, O.

AU - Calvi, M.

AU - Calvo Gomez, M.

AU - Camboni, A.

AU - Campana, P.

AU - Carbone, A.

AU - Carboni, G.

AU - Cardinale, R.

AU - Cardini, A.

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 - 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 - De Bonis, I.

AU - De Bruyn, K.

AU - De Capua, S.

AU - De Cian, M.

AU - De Miranda, J. M.

AU - De Paula, L.

AU - De Simone, P.

AU - Decamp, D.

AU - Deckenhoff, M.

AU - Degaudenzi, H.

AU - Del Buono, L.

AU - Deplano, C.

AU - Derkach, D.

AU - Deschamps, O.

AU - Dettori, F.

AU - Di Canto, A.

AU - Dickens, J.

AU - Dijkstra, H.

AU - Diniz Batista, P.

AU - Domingo Bonal, F.

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 - van Eijk, D.

AU - Eisenhardt, S.

AU - Ekelhof, R.

AU - Eklund, L.

AU - El Rifai, I.

AU - Elsasser, Ch

AU - Elsby, D.

AU - Esperante Pereira, D.

AU - Falabella, A.

AU - Färber, C.

AU - Fardell, G.

AU - Farinelli, C.

AU - Farry, S.

AU - Fave, V.

AU - Fernandez Albor, V.

AU - Ferreira Rodrigues, F.

AU - Ferro-Luzzi, M.

AU - Filippov, S.

AU - Fitzpatrick, C.

AU - Fontana, M.

AU - Fontanelli, F.

AU - Forty, R.

AU - Francisco, O.

AU - Frank, M.

AU - Frei, C.

AU - Frosini, M.

AU - Furcas, S.

AU - Gallas Torreira, A.

AU - Galli, D.

AU - Gandelman, M.

AU - Gandini, P.

AU - Gao, Y.

AU - Garnier, J. C.

AU - Garofoli, J.

AU - Garosi, P.

AU - Garra Tico, 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 - Graziani, G.

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 - Harrison, P. F.

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 - Hicks, E.

AU - Hill, D.

AU - Hoballah, M.

AU - Hopchev, P.

AU - Hulsbergen, W.

AU - Hunt, P.

AU - Huse, T.

AU - Hussain, N.

AU - Hutchcroft, D.

AU - The LHCb Collaboration

PY - 2012/11/15

Y1 - 2012/11/15

N2 - A binned Dalitz plot analysis of B±→DK± decays, with D→KS0π+π- and D→KS0K+K-, is performed to measure the CP-violating observables x± and y± which are sensitive to the CKM angle γ. The analysis exploits 1.0 fb-1 of data collected by the LHCb experiment. The study makes no model-based assumption on the variation of the strong phase of the D decay amplitude over the Dalitz plot, but uses measurements of this quantity from CLEO-c as input. The values of the parameters are found to be x-=(0.0±4.3±1.5±0.6)×10-2, y-=(2.7±5.2±0.8±2.3)×10-2, x+=(-10.3±4.5±1.8±1.4)×10-2 and y+=(-0.9±3.7±0.8±3.0)×10-2. The first, second, and third uncertainties are the statistical, the experimental systematic, and the error associated with the precision of the strong-phase parameters measured at CLEO-c, respectively. These results correspond to γ=(44-38+43)°, with a second solution at γ→γ+180°, and rB=0.07±0.04, where rB is the ratio between the suppressed and favoured B decay amplitudes.

AB - A binned Dalitz plot analysis of B±→DK± decays, with D→KS0π+π- and D→KS0K+K-, is performed to measure the CP-violating observables x± and y± which are sensitive to the CKM angle γ. The analysis exploits 1.0 fb-1 of data collected by the LHCb experiment. The study makes no model-based assumption on the variation of the strong phase of the D decay amplitude over the Dalitz plot, but uses measurements of this quantity from CLEO-c as input. The values of the parameters are found to be x-=(0.0±4.3±1.5±0.6)×10-2, y-=(2.7±5.2±0.8±2.3)×10-2, x+=(-10.3±4.5±1.8±1.4)×10-2 and y+=(-0.9±3.7±0.8±3.0)×10-2. The first, second, and third uncertainties are the statistical, the experimental systematic, and the error associated with the precision of the strong-phase parameters measured at CLEO-c, respectively. These results correspond to γ=(44-38+43)°, with a second solution at γ→γ+180°, and rB=0.07±0.04, where rB is the ratio between the suppressed and favoured B decay amplitudes.

UR - http://www.scopus.com/inward/record.url?scp=84959851911&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2012.10.020

DO - 10.1016/j.physletb.2012.10.020

M3 - Article

AN - SCOPUS:84959851911

VL - 718

SP - 43

EP - 55

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 1

ER -

A model-independent Dalitz plot analysis of B±→DK± with D→KS0h+h- (h=π, K) decays and constraints on the CKM angle γ

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A model-independent Dalitz plot analysis of B^±→DK^± with D→KS0h+h- (h=π, K) decays and constraints on the CKM angle γ