Measurement of the Bs0→J/ψK ̄*0 branching fraction and angular amplitudes

The LHCb Collaboration

doi:10.1103/PhysRevD.86.071102

Measurement of the Bs0→J/ψK ^̄*0 branching fraction and angular amplitudes

The LHCb Collaboration

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

30 Citations (Scopus)

Abstract

A sample of 114±11 Bs0→J/ψK ^-π ⁺ signal events obtained with 0.37fb ^-1 of pp collisions at √s=7TeV collected by the LHCb experiment is used to measure the branching fraction and polarization amplitudes of the Bs0→J/ψK ^̄*0 decay, with K ^̄ ^*0→K ^-π ⁺. The K ^-π ⁺ mass spectrum of the candidates in the Bs0 peak is dominated by the K ^̄*0 contribution. Subtracting the nonresonant K ^-π ⁺ component, the branching fraction of Bs0→J/ψK ^̄*0 is (4.4-0.4+0.5±0.8)×10 ^-5, where the first uncertainty is statistical and the second is systematic. A fit to the angular distribution of the decay products yields the K ^*0 polarization fractions f _L=0.50±0.08±0.02 and f=0.19-0.08+0.10±0.02.

Original language	English
Article number	071102
Number of pages	9
Journal	Physical Review D
Volume	86
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.86.071102
Publication status	Published - 8 Oct 2012
Externally published	Yes

Access to Document

10.1103/PhysRevD.86.071102

Cite this

@article{9845cc43a5734f4584c57552a7e888ae,

title = "Measurement of the Bs0→J/ψK{\= }*0 branching fraction and angular amplitudes",

abstract = "A sample of 114±11 Bs0→J/ψK -π + signal events obtained with 0.37fb -1 of pp collisions at √s=7TeV collected by the LHCb experiment is used to measure the branching fraction and polarization amplitudes of the Bs0→J/ψK{\= }*0 decay, with K{\= } *0→K -π +. The K -π + mass spectrum of the candidates in the Bs0 peak is dominated by the K{\= }*0 contribution. Subtracting the nonresonant K -π + component, the branching fraction of Bs0→J/ψK{\= }*0 is (4.4-0.4+0.5±0.8)×10 -5, where the first uncertainty is statistical and the second is systematic. A fit to the angular distribution of the decay products yields the K *0 polarization fractions f L=0.50±0.08±0.02 and f=0.19-0.08+0.10±0.02.",

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 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 V. Balagura and W. Baldini and Barlow, {R. J.} and C. Barschel and S. Barsuk and W. Barter and A. Bates and C. Bauer 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 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 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 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 F. Eisele 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 {Garra Tico}, J. and L. Garrido and D. Gascon and C. Gaspar and R. Gauld and N. Gauvin 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 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 M. Hoballah and P. Hopchev and W. Hulsbergen and P. Hunt and T. Huse and Huston, {R. S.} and D. Hutchcroft and D. Hynds and V. Iakovenko and P. Ilten and {The LHCb Collaboration}",

year = "2012",

month = oct,

day = "8",

doi = "10.1103/PhysRevD.86.071102",

language = "English",

volume = "86",

journal = "Physical Review D",

issn = "1550-7998",

publisher = "American Physical Society",

number = "7",

}

TY - JOUR

T1 - Measurement of the Bs0→J/ψK ̄*0 branching fraction and angular amplitudes

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 - 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 - Balagura, V.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Bates, A.

AU - Bauer, C.

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 - 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 - 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 - 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 - Eisele, F.

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 - Garra Tico, J.

AU - Garrido, L.

AU - Gascon, D.

AU - Gaspar, C.

AU - Gauld, R.

AU - Gauvin, N.

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 - 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 - Hoballah, M.

AU - Hopchev, P.

AU - Hulsbergen, W.

AU - Hunt, P.

AU - Huse, T.

AU - Huston, R. S.

AU - Hutchcroft, D.

AU - Hynds, D.

AU - Iakovenko, V.

AU - Ilten, P.

AU - The LHCb Collaboration

PY - 2012/10/8

Y1 - 2012/10/8

N2 - A sample of 114±11 Bs0→J/ψK -π + signal events obtained with 0.37fb -1 of pp collisions at √s=7TeV collected by the LHCb experiment is used to measure the branching fraction and polarization amplitudes of the Bs0→J/ψK ̄*0 decay, with K ̄ *0→K -π +. The K -π + mass spectrum of the candidates in the Bs0 peak is dominated by the K ̄*0 contribution. Subtracting the nonresonant K -π + component, the branching fraction of Bs0→J/ψK ̄*0 is (4.4-0.4+0.5±0.8)×10 -5, where the first uncertainty is statistical and the second is systematic. A fit to the angular distribution of the decay products yields the K *0 polarization fractions f L=0.50±0.08±0.02 and f=0.19-0.08+0.10±0.02.

AB - A sample of 114±11 Bs0→J/ψK -π + signal events obtained with 0.37fb -1 of pp collisions at √s=7TeV collected by the LHCb experiment is used to measure the branching fraction and polarization amplitudes of the Bs0→J/ψK ̄*0 decay, with K ̄ *0→K -π +. The K -π + mass spectrum of the candidates in the Bs0 peak is dominated by the K ̄*0 contribution. Subtracting the nonresonant K -π + component, the branching fraction of Bs0→J/ψK ̄*0 is (4.4-0.4+0.5±0.8)×10 -5, where the first uncertainty is statistical and the second is systematic. A fit to the angular distribution of the decay products yields the K *0 polarization fractions f L=0.50±0.08±0.02 and f=0.19-0.08+0.10±0.02.

UR - http://www.scopus.com/inward/record.url?scp=84867261132&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.86.071102

DO - 10.1103/PhysRevD.86.071102

M3 - Article

AN - SCOPUS:84867261132

SN - 1550-7998

VL - 86

JO - Physical Review D

JF - Physical Review D

IS - 7

M1 - 071102

ER -

Measurement of the Bs0→J/ψK ̄*0 branching fraction and angular amplitudes

Abstract

Access to Document

Other files and links

Cite this

Measurement of the Bs0→J/ψK ^̄*0 branching fraction and angular amplitudes