Measurement of CP asymmetries and polarisation fractions in B<inf>s</inf>0→K∗0K¯∗0 decays

null The LHCb collaboration; R. Aaij; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; S. Akar; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A. A. Alves; S. Amato; S. Amerio; Y. Amhis; L. An; L. Anderlini; J. Anderson; R. Andreassen; M. Andreotti; J. E. Andrews; R. B. Appleby; O. Aquines Gutierrez; F. Archilli; A. Artamonov; M. Artuso; E. Aslanides; G. Auriemma; M. Baalouch; S. Bachmann; J. J. Back; A. Badalov; C. Baesso; W. Baldini; R. J. Barlow; C. Barschel; S. Barsuk; W. Barter; V. Batozskaya; V. Battista; A. Bay; L. Beaucourt; J. Beddow; F. Bedeschi; I. Bediaga; L. J. Bel; S. Belogurov; I. Belyaev; E. Ben-Haim; G. Bencivenni; S. Benson; J. Benton; A. Berezhnoy; R. Bernet; A. Bertolin; M. O. Bettler; M. van Beuzekom; A. Bien; S. Bifani; T. Bird; A. Bizzeti; T. Blake; F. Blanc; J. Blouw; S. Blusk; V. Bocci; A. Bondar; N. Bondar; W. Bonivento; S. Borghi; A. Borgia; M. Borsato; T. J.V. Bowcock; E. Bowen; C. Bozzi; D. Brett; M. Britsch; T. Britton; J. Brodzicka; N. H. Brook; A. Bursche; J. Buytaert; S. Cadeddu; R. Calabrese; M. Calvi; M. Calvo Gomez; P. Campana; D. Campora Perez; L. Capriotti

doi:10.1007/JHEP07(2015)166

Measurement of CP asymmetries and polarisation fractions in B<inf>s</inf>0→K∗0K¯∗0 decays

The LHCb collaboration, R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, S. Amerio, Y. Amhis, L. An, L. Anderlini, J. AndersonR. Andreassen, M. Andreotti, J. E. Andrews, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, S. Bachmann, J. J. Back, A. Badalov, C. Baesso, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, V. Batozskaya, V. Battista, A. Bay, L. Beaucourt, J. Beddow, F. Bedeschi, I. Bediaga, L. J. Bel, S. Belogurov, I. Belyaev, E. Ben-Haim, G. Bencivenni, S. Benson, J. Benton, A. Berezhnoy, R. Bernet, A. Bertolin, M. O. Bettler, M. van Beuzekom, A. Bien, S. Bifani, T. Bird, A. Bizzeti, T. Blake, F. Blanc, J. Blouw, S. Blusk, V. Bocci, A. Bondar, N. Bondar, W. Bonivento, S. Borghi, A. Borgia, M. Borsato, T. J.V. Bowcock, E. Bowen, C. Bozzi, D. Brett, M. Britsch, T. Britton, J. Brodzicka, N. H. Brook, A. Bursche, J. Buytaert, S. Cadeddu, R. Calabrese, M. Calvi, M. Calvo Gomez, P. Campana, D. Campora Perez, L. Capriotti

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20 Citas (Scopus)

Resumen

Abstract: An angular analysis of the decay B _s ⁰→K ^∗0K ^¯∗0 is performed using pp collisions corresponding to an integrated luminosity of 1.0 fb ⁻¹ collected by the LHCb experiment at a centre-of-mass energy √s=7 TeV. A combined angular and mass analysis separates six helicity amplitudes and allows the measurement of the longitudinal polarisation fraction f _L = 0.201 ± 0.057 (stat.) ± 0.040 (syst.) for the (Formula Presented) decay. A large scalar contribution from the K ₀ ^∗(1430) and K ₀ ^∗(800) resonances is found, allowing the determination of additional CP asymmetries. Triple product and direct CP asymmetries are determined to be compatible with the Standard Model expectations. The branching fraction ℬBs→ ^K∗ ⁸⁹²⁰ ^K¯∗ ⁸⁹²⁰ is measured to be (10.8 ± 2.1 (stat.) ± 1.4 (syst.) ± 0.6 (f _d/f _s)) × 10 ⁻⁶.

Idioma original	English
Número de artículo	166
Publicación	Journal of High Energy Physics
Volumen	2015
N.º	7
DOI	https://doi.org/10.1007/JHEP07(2015)166
Estado	Published - 6 jul 2015
Publicado de forma externa	Sí

All Science Journal Classification (ASJC) codes

Física nuclear y de alta energía

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10.1007/JHEP07(2015)166

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The LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., ... Capriotti, L. (2015). Measurement of CP asymmetries and polarisation fractions in B<inf>s</inf>0→K∗0K¯∗0 decays. Journal of High Energy Physics, 2015(7), Artículo 166. https://doi.org/10.1007/JHEP07(2015)166

@article{3f89129e9ddb4710a32e5f4c84a8c394,

title = "Measurement of CP asymmetries and polarisation fractions in Bs0→K∗0K¯∗0 decays",

abstract = "Abstract: An angular analysis of the decay B s 0→K ∗0K ¯∗0 is performed using pp collisions corresponding to an integrated luminosity of 1.0 fb −1 collected by the LHCb experiment at a centre-of-mass energy √s=7 TeV. A combined angular and mass analysis separates six helicity amplitudes and allows the measurement of the longitudinal polarisation fraction f L = 0.201 ± 0.057 (stat.) ± 0.040 (syst.) for the (Formula Presented) decay. A large scalar contribution from the K 0 ∗(1430) and K 0 ∗(800) resonances is found, allowing the determination of additional CP asymmetries. Triple product and direct CP asymmetries are determined to be compatible with the Standard Model expectations. The branching fraction ℬBs→ K∗ 8920 K¯∗ 8920 is measured to be (10.8 ± 2.1 (stat.) ± 1.4 (syst.) ± 0.6 (f d/f s)) × 10 −6. ",

author = "{The LHCb collaboration} and R. Aaij and B. Adeva and M. Adinolfi and A. Affolder and Z. Ajaltouni and S. Akar 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. An and L. Anderlini and J. Anderson and R. Andreassen and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and {Aquines Gutierrez}, O. and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and S. Bachmann and Back, {J. J.} and A. Badalov and C. Baesso and W. Baldini and Barlow, {R. J.} and C. Barschel and S. Barsuk and W. Barter and V. Batozskaya and V. Battista and A. Bay and L. Beaucourt and J. Beddow and F. Bedeschi and I. Bediaga and Bel, {L. J.} and S. Belogurov and I. Belyaev and E. Ben-Haim and G. Bencivenni and S. Benson and J. Benton and A. Berezhnoy and R. Bernet and A. Bertolin and Bettler, {M. O.} and {van Beuzekom}, M. and A. Bien and S. Bifani and T. Bird and A. Bizzeti and T. Blake 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 M. Borsato and Bowcock, {T. J.V.} and E. Bowen and C. Bozzi and D. Brett and M. Britsch and T. Britton and J. Brodzicka and Brook, {N. H.} and A. Bursche and J. Buytaert and S. Cadeddu and R. Calabrese and M. Calvi and {Calvo Gomez}, M. and P. Campana and {Campora Perez}, D. and L. Capriotti",

year = "2015",

month = jul,

day = "6",

doi = "10.1007/JHEP07(2015)166",

language = "English",

volume = "2015",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "7",

}

The LHCb collaboration, Aaij, R, Adeva, B, Adinolfi, M, Affolder, A, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Alvarez Cartelle, P, Alves, AA, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Anderson, J, Andreassen, R, Andreotti, M, Andrews, JE, Appleby, RB, Aquines Gutierrez, O, Archilli, F, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Bachmann, S, Back, JJ, Badalov, A, Baesso, C, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Batozskaya, V, Battista, V, Bay, A, Beaucourt, L, Beddow, J, Bedeschi, F, Bediaga, I, Bel, LJ, Belogurov, S, Belyaev, I, Ben-Haim, E, Bencivenni, G, Benson, S, Benton, J, Berezhnoy, A, Bernet, R, Bertolin, A, Bettler, MO, van Beuzekom, M, Bien, A, Bifani, S, Bird, T, Bizzeti, A, Blake, T, Blanc, F, Blouw, J, Blusk, S, Bocci, V, Bondar, A, Bondar, N, Bonivento, W, Borghi, S, Borgia, A, Borsato, M, Bowcock, TJV, Bowen, E, Bozzi, C, Brett, D, Britsch, M, Britton, T, Brodzicka, J, Brook, NH, Bursche, A, Buytaert, J, Cadeddu, S, Calabrese, R, Calvi, M, Calvo Gomez, M, Campana, P, Campora Perez, D & Capriotti, L 2015, 'Measurement of CP asymmetries and polarisation fractions in B<inf>s</inf>0→K∗0K¯∗0 decays', Journal of High Energy Physics, vol. 2015, n.º 7, 166. https://doi.org/10.1007/JHEP07(2015)166

TY - JOUR

T1 - Measurement of CP asymmetries and polarisation fractions in Bs0→K∗0K¯∗0 decays

AU - The LHCb collaboration, null

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Affolder, A.

AU - Ajaltouni, Z.

AU - Akar, S.

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 - An, L.

AU - Anderlini, L.

AU - Anderson, J.

AU - Andreassen, R.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Aquines Gutierrez, O.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Bachmann, S.

AU - Back, J. J.

AU - Badalov, A.

AU - Baesso, C.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Batozskaya, V.

AU - Battista, V.

AU - Bay, A.

AU - Beaucourt, L.

AU - Beddow, J.

AU - Bedeschi, F.

AU - Bediaga, I.

AU - Bel, L. J.

AU - Belogurov, S.

AU - Belyaev, I.

AU - Ben-Haim, E.

AU - Bencivenni, G.

AU - Benson, S.

AU - Benton, J.

AU - Berezhnoy, A.

AU - Bernet, R.

AU - Bertolin, A.

AU - Bettler, M. O.

AU - van Beuzekom, M.

AU - Bien, A.

AU - Bifani, S.

AU - Bird, T.

AU - Bizzeti, A.

AU - Blake, T.

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 - Borsato, M.

AU - Bowcock, T. J.V.

AU - Bowen, E.

AU - Bozzi, C.

AU - Brett, D.

AU - Britsch, M.

AU - Britton, T.

AU - Brodzicka, J.

AU - Brook, N. H.

AU - Bursche, A.

AU - Buytaert, J.

AU - Cadeddu, S.

AU - Calabrese, R.

AU - Calvi, M.

AU - Calvo Gomez, M.

AU - Campana, P.

AU - Campora Perez, D.

AU - Capriotti, L.

PY - 2015/7/6

Y1 - 2015/7/6

N2 - Abstract: An angular analysis of the decay B s 0→K ∗0K ¯∗0 is performed using pp collisions corresponding to an integrated luminosity of 1.0 fb −1 collected by the LHCb experiment at a centre-of-mass energy √s=7 TeV. A combined angular and mass analysis separates six helicity amplitudes and allows the measurement of the longitudinal polarisation fraction f L = 0.201 ± 0.057 (stat.) ± 0.040 (syst.) for the (Formula Presented) decay. A large scalar contribution from the K 0 ∗(1430) and K 0 ∗(800) resonances is found, allowing the determination of additional CP asymmetries. Triple product and direct CP asymmetries are determined to be compatible with the Standard Model expectations. The branching fraction ℬBs→ K∗ 8920 K¯∗ 8920 is measured to be (10.8 ± 2.1 (stat.) ± 1.4 (syst.) ± 0.6 (f d/f s)) × 10 −6.

AB - Abstract: An angular analysis of the decay B s 0→K ∗0K ¯∗0 is performed using pp collisions corresponding to an integrated luminosity of 1.0 fb −1 collected by the LHCb experiment at a centre-of-mass energy √s=7 TeV. A combined angular and mass analysis separates six helicity amplitudes and allows the measurement of the longitudinal polarisation fraction f L = 0.201 ± 0.057 (stat.) ± 0.040 (syst.) for the (Formula Presented) decay. A large scalar contribution from the K 0 ∗(1430) and K 0 ∗(800) resonances is found, allowing the determination of additional CP asymmetries. Triple product and direct CP asymmetries are determined to be compatible with the Standard Model expectations. The branching fraction ℬBs→ K∗ 8920 K¯∗ 8920 is measured to be (10.8 ± 2.1 (stat.) ± 1.4 (syst.) ± 0.6 (f d/f s)) × 10 −6.

UR - http://www.scopus.com/inward/record.url?scp=84938590119&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84938590119&partnerID=8YFLogxK

U2 - 10.1007/JHEP07(2015)166

DO - 10.1007/JHEP07(2015)166

M3 - Article

SN - 1126-6708

VL - 2015

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 7

M1 - 166

ER -

Measurement of CP asymmetries and polarisation fractions in B<inf>s</inf><sup>0</sup>→K<sup>∗0</sup>K<sup>¯∗0</sup> decays

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