First observation of the decay B<inf>s</inf><sup>0</sup>→K<sup>*0</sup>K̄<sup>*0</sup>

R. Aaij, C. Abellan Beteta, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, M. Alexander, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, Y. Amhis, J. Anderson, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, L. ArrabitoA. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, S. Bachmann, J. J. Back, D. S. Bailey, V. Balagura, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, A. Bates, C. Bauer, T. Bauer, A. Bay, I. Bediaga, S. Belogurov, K. Belous, I. Belyaev, E. Ben-Haim, M. Benayoun, G. Bencivenni, S. Benson, J. Benton, R. Bernet, M. O. Bettler, M. van Beuzekom, A. Bien, S. Bifani, A. Bizzeti, P. M. Bjørnstad, T. Blake, F. Blanc, C. Blanks, J. Blouw, S. Blusk, A. Bobrov, V. Bocci, A. Bondar, N. Bondar, W. Bonivento, S. Borghi, A. Borgia, T. J.V. Bowcock, C. Bozzi, T. Brambach, J. van den Brand, J. Bressieux, D. Brett, S. Brisbane, M. Britsch, T. Britton, N. H. Brook, H. Brown, A. Büchler-Germann, I. Burducea, A. Bursche, J. Buytaert, S. Cadeddu, J. M. Caicedo Carvajal, O. Callot, M. Calvi, M. Calvo Gomez, A. Camboni, P. Campana, A. Carbone, G. Carboni, R. Cardinale, A. Cardini, L. Carson

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

The first observation of the decay Bs0→K*0K̄*0 is reported using 35 pb-1 of data collected by LHCb in proton-proton collisions at a centre-of-mass energy of 7 TeV. A total of 49.8±7.5 Bs0→(K+π-)(K-π+) events are observed within ±50 MeV/c2 of the Bs0 mass and 746 MeV/c2<mKπ<1046 MeV/c2, mostly coming from a resonant Bs0→K*0K̄*0 signal. The branching fraction and the CP-averaged K*0 longitudinal polarization fraction are measured to be B(Bs0→K*0K̄*0)=(2.81±0.46(stat.)±0.45(syst.)±0.34(fs/fd))×10-5 and fL=0.31±0.12(stat.)±0.04(syst.). © 2012 CERN.
Original languageEnglish
Pages (from-to)50-58
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
DOIs
Publication statusPublished - 13 Mar 2012
Externally publishedYes

Fingerprint

protons
decay
center of mass
collisions
polarization
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Aaij, R. ; Abellan Beteta, C. ; Adeva, B. ; Adinolfi, M. ; Adrover, C. ; Affolder, A. ; Ajaltouni, Z. ; Albrecht, J. ; Alessio, F. ; Alexander, M. ; Alkhazov, G. ; Alvarez Cartelle, P. ; Alves, A. A. ; Amato, S. ; Amhis, Y. ; Anderson, J. ; Appleby, R. B. ; Aquines Gutierrez, O. ; Archilli, F. ; Arrabito, L. ; Artamonov, A. ; Artuso, M. ; Aslanides, E. ; Auriemma, G. ; Bachmann, S. ; Back, J. J. ; Bailey, D. S. ; Balagura, V. ; Baldini, W. ; Barlow, R. J. ; Barschel, C. ; Barsuk, S. ; Barter, W. ; Bates, A. ; Bauer, C. ; Bauer, T. ; Bay, A. ; Bediaga, I. ; Belogurov, S. ; Belous, K. ; Belyaev, I. ; Ben-Haim, E. ; Benayoun, M. ; Bencivenni, G. ; Benson, S. ; Benton, J. ; Bernet, R. ; Bettler, M. O. ; van Beuzekom, M. ; Bien, A. ; Bifani, S. ; Bizzeti, A. ; Bjørnstad, P. M. ; Blake, T. ; Blanc, F. ; Blanks, C. ; Blouw, J. ; Blusk, S. ; Bobrov, A. ; Bocci, V. ; Bondar, A. ; Bondar, N. ; Bonivento, W. ; Borghi, S. ; Borgia, A. ; Bowcock, T. J.V. ; Bozzi, C. ; Brambach, T. ; van den Brand, J. ; Bressieux, J. ; Brett, D. ; Brisbane, S. ; Britsch, M. ; Britton, T. ; Brook, N. H. ; Brown, H. ; Büchler-Germann, A. ; Burducea, I. ; Bursche, A. ; Buytaert, J. ; Cadeddu, S. ; Caicedo Carvajal, J. M. ; Callot, O. ; Calvi, M. ; Calvo Gomez, M. ; Camboni, A. ; Campana, P. ; Carbone, A. ; Carboni, G. ; Cardinale, R. ; Cardini, A. ; Carson, L. / First observation of the decay B<inf>s</inf><sup>0</sup>→K<sup>*0</sup>K̄<sup>*0</sup>. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2012 ; pp. 50-58.
@article{e687228acad840748dd81cbb8fd60f9d,
title = "First observation of the decay Bs0→K*0K̄*0",
abstract = "The first observation of the decay Bs0→K*0K̄*0 is reported using 35 pb-1 of data collected by LHCb in proton-proton collisions at a centre-of-mass energy of 7 TeV. A total of 49.8±7.5 Bs0→(K+π-)(K-π+) events are observed within ±50 MeV/c2 of the Bs0 mass and 746 MeV/c2<mKπ<1046 MeV/c2, mostly coming from a resonant Bs0→K*0K̄*0 signal. The branching fraction and the CP-averaged K*0 longitudinal polarization fraction are measured to be B(Bs0→K*0K̄*0)=(2.81±0.46(stat.)±0.45(syst.)±0.34(fs/fd))×10-5 and fL=0.31±0.12(stat.)±0.04(syst.). {\circledC} 2012 CERN.",
author = "R. Aaij and {Abellan Beteta}, C. 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 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 L. Arrabito and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and S. Bachmann and Back, {J. J.} and Bailey, {D. S.} 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 T. Bauer and A. Bay 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 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 S. Brisbane 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 {Caicedo Carvajal}, {J. M.} 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",
year = "2012",
month = "3",
day = "13",
doi = "10.1016/j.physletb.2012.02.001",
language = "English",
pages = "50--58",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",

}

Aaij, R, Abellan Beteta, C, Adeva, B, Adinolfi, M, Adrover, C, Affolder, A, Ajaltouni, Z, Albrecht, J, Alessio, F, Alexander, M, Alkhazov, G, Alvarez Cartelle, P, Alves, AA, Amato, S, Amhis, Y, Anderson, J, Appleby, RB, Aquines Gutierrez, O, Archilli, F, Arrabito, L, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Bachmann, S, Back, JJ, Bailey, DS, Balagura, V, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Bates, A, Bauer, C, Bauer, T, Bay, A, Bediaga, I, Belogurov, S, Belous, K, Belyaev, I, Ben-Haim, E, Benayoun, M, Bencivenni, G, Benson, S, Benton, J, Bernet, R, Bettler, MO, van Beuzekom, M, Bien, A, Bifani, S, Bizzeti, A, Bjørnstad, PM, Blake, T, Blanc, F, Blanks, C, Blouw, J, Blusk, S, Bobrov, A, Bocci, V, Bondar, A, Bondar, N, Bonivento, W, Borghi, S, Borgia, A, Bowcock, TJV, Bozzi, C, Brambach, T, van den Brand, J, Bressieux, J, Brett, D, Brisbane, S, Britsch, M, Britton, T, Brook, NH, Brown, H, Büchler-Germann, A, Burducea, I, Bursche, A, Buytaert, J, Cadeddu, S, Caicedo Carvajal, JM, Callot, O, Calvi, M, Calvo Gomez, M, Camboni, A, Campana, P, Carbone, A, Carboni, G, Cardinale, R, Cardini, A & Carson, L 2012, 'First observation of the decay B<inf>s</inf><sup>0</sup>→K<sup>*0</sup>K̄<sup>*0</sup>', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, pp. 50-58. https://doi.org/10.1016/j.physletb.2012.02.001

First observation of the decay B<inf>s</inf><sup>0</sup>→K<sup>*0</sup>K̄<sup>*0</sup> / Aaij, R.; Abellan Beteta, C.; Adeva, B.; Adinolfi, M.; Adrover, C.; Affolder, A.; Ajaltouni, Z.; Albrecht, J.; Alessio, F.; Alexander, M.; Alkhazov, G.; Alvarez Cartelle, P.; Alves, A. A.; Amato, S.; Amhis, Y.; Anderson, J.; Appleby, R. B.; Aquines Gutierrez, O.; Archilli, F.; Arrabito, L.; Artamonov, A.; Artuso, M.; Aslanides, E.; Auriemma, G.; Bachmann, S.; Back, J. J.; Bailey, D. S.; Balagura, V.; Baldini, W.; Barlow, R. J.; Barschel, C.; Barsuk, S.; Barter, W.; Bates, A.; Bauer, C.; Bauer, T.; Bay, A.; Bediaga, I.; Belogurov, S.; Belous, K.; Belyaev, I.; Ben-Haim, E.; Benayoun, M.; Bencivenni, G.; Benson, S.; Benton, J.; Bernet, R.; Bettler, M. O.; van Beuzekom, M.; Bien, A.; Bifani, S.; Bizzeti, A.; Bjørnstad, P. M.; Blake, T.; Blanc, F.; Blanks, C.; Blouw, J.; Blusk, S.; Bobrov, A.; Bocci, V.; Bondar, A.; Bondar, N.; Bonivento, W.; Borghi, S.; Borgia, A.; Bowcock, T. J.V.; Bozzi, C.; Brambach, T.; van den Brand, J.; Bressieux, J.; Brett, D.; Brisbane, S.; Britsch, M.; Britton, T.; Brook, N. H.; Brown, H.; Büchler-Germann, A.; Burducea, I.; Bursche, A.; Buytaert, J.; Cadeddu, S.; Caicedo Carvajal, J. M.; Callot, O.; Calvi, M.; Calvo Gomez, M.; Camboni, A.; Campana, P.; Carbone, A.; Carboni, G.; Cardinale, R.; Cardini, A.; Carson, L.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 13.03.2012, p. 50-58.

Research output: Contribution to journalArticle

TY - JOUR

T1 - First observation of the decay Bs0→K*0K̄*0

AU - Aaij, R.

AU - Abellan Beteta, C.

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 - 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 - Arrabito, L.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Bachmann, S.

AU - Back, J. J.

AU - Bailey, D. S.

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, T.

AU - Bay, A.

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 - 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 - Brisbane, S.

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 - Caicedo Carvajal, J. M.

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.

PY - 2012/3/13

Y1 - 2012/3/13

N2 - The first observation of the decay Bs0→K*0K̄*0 is reported using 35 pb-1 of data collected by LHCb in proton-proton collisions at a centre-of-mass energy of 7 TeV. A total of 49.8±7.5 Bs0→(K+π-)(K-π+) events are observed within ±50 MeV/c2 of the Bs0 mass and 746 MeV/c2<mKπ<1046 MeV/c2, mostly coming from a resonant Bs0→K*0K̄*0 signal. The branching fraction and the CP-averaged K*0 longitudinal polarization fraction are measured to be B(Bs0→K*0K̄*0)=(2.81±0.46(stat.)±0.45(syst.)±0.34(fs/fd))×10-5 and fL=0.31±0.12(stat.)±0.04(syst.). © 2012 CERN.

AB - The first observation of the decay Bs0→K*0K̄*0 is reported using 35 pb-1 of data collected by LHCb in proton-proton collisions at a centre-of-mass energy of 7 TeV. A total of 49.8±7.5 Bs0→(K+π-)(K-π+) events are observed within ±50 MeV/c2 of the Bs0 mass and 746 MeV/c2<mKπ<1046 MeV/c2, mostly coming from a resonant Bs0→K*0K̄*0 signal. The branching fraction and the CP-averaged K*0 longitudinal polarization fraction are measured to be B(Bs0→K*0K̄*0)=(2.81±0.46(stat.)±0.45(syst.)±0.34(fs/fd))×10-5 and fL=0.31±0.12(stat.)±0.04(syst.). © 2012 CERN.

U2 - 10.1016/j.physletb.2012.02.001

DO - 10.1016/j.physletb.2012.02.001

M3 - Article

SP - 50

EP - 58

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

ER -