First observation of the decay B-s(0) -> phi(K)over-bar*(0)

R. Aaij; C.A. Beteta; B. Adeva; M. Adinolfi; C. Adrover; A. Affolder; Z. Ajaltouni; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P.A. Cartelle; A.A. Alves; S. Amato; S. Amerio; Y. Amhis; L. Anderlini; J. Anderson; R. Andreassen; R.B. Appleby; O.A. Gutierrez; F. Archilli; A. Artamonov; M. Artuso; E. Aslanides; G. Auriemma; S. Bachmann; J.J. Back; C. Baesso; V. Balagura; W. Baldini; R.J. Barlow; C. Barschel; S. Barsuk; W. Barter; T. Bauer; A. Bay; J. Beddow; F. Bedeschi; I. Bediaga; S. Belogurov; K. Belous; I. Belyaev; E. Ben-Haim; M. Benayoun; G. Bencivenni; S. Benson; J. Benton; A. Berezhnoy; J. van den Brand

doi:10.1007/JHEP11(2013)092

First observation of the decay B-s(0) -> phi(K)over-bar*(0)

R. Aaij^*, C.A. Beteta, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P.A. Cartelle, A.A. Alves, S. Amato, S. Amerio, Y. Amhis, L. Anderlini, J. Anderson, R. AndreassenR.B. Appleby, O.A. Gutierrez, F. Archilli, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, S. Bachmann, J.J. Back, C. Baesso, V. Balagura, W. Baldini, R.J. Barlow, C. Barschel, S. Barsuk, W. Barter, T. Bauer, A. Bay, J. Beddow, F. Bedeschi, I. Bediaga, S. Belogurov, K. Belous, I. Belyaev, E. Ben-Haim, M. Benayoun, G. Bencivenni, S. Benson, J. Benton, A. Berezhnoy, J. van den Brand

^*Corresponding author for this work

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

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Abstract

The first observation of the decay B-s(0) -> phi(K) over bar*(0) is reported. The analysis is based on a data sample corresponding to an integrated luminosity of 1.0 fb(-1) of p p collisions at root s = 7 TeV, collected with the LHCb detector. A yield of 30 +/- 6 B-s(0) -> (K+ K-)(K- pi(+)) decays is found in the mass windows 1012.5 < M (K+ K-) < 1026.5MeV/c(2) and 746 < M (K- pi(+)) < 1046MeV/c(2). The signal yield is found to be dominated by B-s(0) -> phi(K) over bar*(0) decays, and the corresponding branching fraction is measured to be B (B-s(0) (->) phi(K) over bar*(0)) = (1.10 +/- 0.24 (stat) +/- 0.14 (syst) +/- 0.08 (f(d)/f(s))) x 10(-6), where the uncertainties are statistical, systematic and from the ratio of fragmentation fractions f(d)/f(s) which accounts for the different production rate of B-0 and B-s(0) mesons. The significance of B-s(0) ->phi (K) over bar*(0) signal is 6.1 standard deviations. The fraction of longitudinal polarization in B-s(0) -> phi(K) over bar*(0) decays is found to be f(0) = 0.51 +/- 0.15 (stat) +/- 0.07 (syst).

Original language	English
Article number	092
Number of pages	22
Journal	Journal of High Energy Physics
Issue number	11
DOIs	https://doi.org/10.1007/JHEP11(2013)092
Publication status	Published - 12 Nov 2013
Externally published	Yes

Keywords

B physics
Flavour Changing Neutral Currents
Flavor physics
Hadron-Hadron Scattering
CP-VIOLATING ASYMMETRIES
BRANCHING FRACTIONS
ART.
POLARIZATION
K+

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10.1007/JHEP11(2013)092

Cite this

Aaij, R., Beteta, C. A., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. A., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., Anderlini, L., Anderson, J., ... van den Brand, J. (2013). First observation of the decay B-s(0) -> phi(K)over-bar*(0). Journal of High Energy Physics, (11), [092]. https://doi.org/10.1007/JHEP11(2013)092

@article{9350b42cc303462b934e7476b2504606,

title = "First observation of the decay B-s(0) -> phi(K)over-bar*(0)",

abstract = "The first observation of the decay B-s(0) -> phi(K) over bar*(0) is reported. The analysis is based on a data sample corresponding to an integrated luminosity of 1.0 fb(-1) of p p collisions at root s = 7 TeV, collected with the LHCb detector. A yield of 30 +/- 6 B-s(0) -> (K+ K-)(K- pi(+)) decays is found in the mass windows 1012.5 < M (K+ K-) < 1026.5MeV/c(2) and 746 < M (K- pi(+)) < 1046MeV/c(2). The signal yield is found to be dominated by B-s(0) -> phi(K) over bar*(0) decays, and the corresponding branching fraction is measured to be B (B-s(0) (->) phi(K) over bar*(0)) = (1.10 +/- 0.24 (stat) +/- 0.14 (syst) +/- 0.08 (f(d)/f(s))) x 10(-6), where the uncertainties are statistical, systematic and from the ratio of fragmentation fractions f(d)/f(s) which accounts for the different production rate of B-0 and B-s(0) mesons. The significance of B-s(0) ->phi (K) over bar*(0) signal is 6.1 standard deviations. The fraction of longitudinal polarization in B-s(0) -> phi(K) over bar*(0) decays is found to be f(0) = 0.51 +/- 0.15 (stat) +/- 0.07 (syst).",

keywords = "B physics, Flavour Changing Neutral Currents, Flavor physics, Hadron-Hadron Scattering, CP-VIOLATING ASYMMETRIES, BRANCHING FRACTIONS, ART., POLARIZATION, K+",

author = "R. Aaij and C.A. Beteta 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 P.A. Cartelle and A.A. Alves and S. Amato and S. Amerio and Y. Amhis and L. Anderlini and J. Anderson and R. Andreassen and R.B. Appleby and O.A. Gutierrez and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and S. Bachmann and J.J. Back and C. Baesso and V. Balagura and W. Baldini and R.J. Barlow and C. Barschel and S. Barsuk and W. Barter and T. Bauer and A. Bay and J. Beddow and F. Bedeschi 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 {van den Brand}, J.",

year = "2013",

month = nov,

day = "12",

doi = "10.1007/JHEP11(2013)092",

language = "English",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer Verlag",

number = "11",

}

Aaij, R, Beteta, CA, Adeva, B, Adinolfi, M, Adrover, C, Affolder, A, Ajaltouni, Z, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Cartelle, PA, Alves, AA, Amato, S, Amerio, S, Amhis, Y, Anderlini, L, Anderson, J, Andreassen, R, Appleby, RB, Gutierrez, OA, Archilli, F, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Bachmann, S, Back, JJ, Baesso, C, Balagura, V, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Bauer, T, Bay, A, Beddow, J, Bedeschi, F, Bediaga, I, Belogurov, S, Belous, K, Belyaev, I, Ben-Haim, E, Benayoun, M, Bencivenni, G, Benson, S, Benton, J, Berezhnoy, A & van den Brand, J 2013, 'First observation of the decay B-s(0) -> phi(K)over-bar*(0)', Journal of High Energy Physics, no. 11, 092. https://doi.org/10.1007/JHEP11(2013)092

TY - JOUR

T1 - First observation of the decay B-s(0) -> phi(K)over-bar*(0)

AU - Aaij, R.

AU - Beteta, C.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 - Cartelle, P.A.

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 - Gutierrez, O.A.

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.

AU - Bay, A.

AU - Beddow, J.

AU - Bedeschi, F.

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 - van den Brand, J.

PY - 2013/11/12

Y1 - 2013/11/12

N2 - The first observation of the decay B-s(0) -> phi(K) over bar*(0) is reported. The analysis is based on a data sample corresponding to an integrated luminosity of 1.0 fb(-1) of p p collisions at root s = 7 TeV, collected with the LHCb detector. A yield of 30 +/- 6 B-s(0) -> (K+ K-)(K- pi(+)) decays is found in the mass windows 1012.5 < M (K+ K-) < 1026.5MeV/c(2) and 746 < M (K- pi(+)) < 1046MeV/c(2). The signal yield is found to be dominated by B-s(0) -> phi(K) over bar*(0) decays, and the corresponding branching fraction is measured to be B (B-s(0) (->) phi(K) over bar*(0)) = (1.10 +/- 0.24 (stat) +/- 0.14 (syst) +/- 0.08 (f(d)/f(s))) x 10(-6), where the uncertainties are statistical, systematic and from the ratio of fragmentation fractions f(d)/f(s) which accounts for the different production rate of B-0 and B-s(0) mesons. The significance of B-s(0) ->phi (K) over bar*(0) signal is 6.1 standard deviations. The fraction of longitudinal polarization in B-s(0) -> phi(K) over bar*(0) decays is found to be f(0) = 0.51 +/- 0.15 (stat) +/- 0.07 (syst).

AB - The first observation of the decay B-s(0) -> phi(K) over bar*(0) is reported. The analysis is based on a data sample corresponding to an integrated luminosity of 1.0 fb(-1) of p p collisions at root s = 7 TeV, collected with the LHCb detector. A yield of 30 +/- 6 B-s(0) -> (K+ K-)(K- pi(+)) decays is found in the mass windows 1012.5 < M (K+ K-) < 1026.5MeV/c(2) and 746 < M (K- pi(+)) < 1046MeV/c(2). The signal yield is found to be dominated by B-s(0) -> phi(K) over bar*(0) decays, and the corresponding branching fraction is measured to be B (B-s(0) (->) phi(K) over bar*(0)) = (1.10 +/- 0.24 (stat) +/- 0.14 (syst) +/- 0.08 (f(d)/f(s))) x 10(-6), where the uncertainties are statistical, systematic and from the ratio of fragmentation fractions f(d)/f(s) which accounts for the different production rate of B-0 and B-s(0) mesons. The significance of B-s(0) ->phi (K) over bar*(0) signal is 6.1 standard deviations. The fraction of longitudinal polarization in B-s(0) -> phi(K) over bar*(0) decays is found to be f(0) = 0.51 +/- 0.15 (stat) +/- 0.07 (syst).

KW - B physics

KW - Flavour Changing Neutral Currents

KW - Flavor physics

KW - Hadron-Hadron Scattering

KW - CP-VIOLATING ASYMMETRIES

KW - BRANCHING FRACTIONS

KW - ART.

KW - POLARIZATION

KW - K+

U2 - 10.1007/JHEP11(2013)092

DO - 10.1007/JHEP11(2013)092

M3 - Article

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 11

M1 - 092

ER -