Measurement of the relative <i>B</i><SUP>-</SUP> → <i>D</i><SUP>0</SUP>/<i>D</i>*<SUP>0</SUP>/<i>D</i>**<SUP>0</SUP>μ<SUP>-</SUP>(ν)over-bar_μ branching fractions using <i>B</i><SUP>-</SUP> mesons from &lt;(<i>B</i>)over bar&gt;_S2*<SUP>0</SUP> decays

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Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Alfonso Albero, A, Ali, S et al (show 793 more authors) , Alkhazov, G, Cartelle, P Alvarez, Alves, AA Jr, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, JE, Appleby, RB, Archilli, F, Romeu, J Arnau, Artamonov, A, Artuso, M, Aslanides, E, Atzeni, M, Auriemma, G, Baalouch, M, Babuschkin, I, Bachmann, S, Back, JJ, Badalov, A, Baesso, C, Baker, S, Balagura, V, Baldini, W, Baranov, A, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Baryshnikov, F, Batozskaya, V, Battista, V, Bay, A, Beaucourt, L, Beddow, J, Bedeschi, F, Bediaga, I, Beiter, A, Bel, LJ, Beliy, N, Bellee, V, Belloli, N, Belous, K, Belyaev, I, Bencivenni, G, Ben-Haim, E, Benson, S, Beranek, S, Berezhnoy, A, Bernet, R, Berninghoff, D, Bertholet, E, Bertolin, A, Betancourt, C, Betti, F, Bettler, MO, Bezshyiko, Ia, Bifani, S, Billoir, P, Birnkraut, A, Bizzeti, A, Bjorn, M, Blake, T, Blanc, F, 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A, Weisser, C, Whitehead, M, Wicht, J, Wilkinson, G, Wilkinson, M, Williams, M, Williams, MRJ, Williams, T, Wilson, FF, Wimberley, J, Winn, M, Wishahi, J, Wislicki, W, Witek, M, Wormser, G, Wotton, SA, Wyllie, K, Xie, Y, Xu, M, Xu, Q, Xu, Z, Xu, Z, Yang, Z, Yang, Z, Yao, Y, Yin, H, Yu, J, Yuan, X, Yushchenko, O, Zarebski, KA, Zavertyaev, M, Zhang, L, Zhang, Y, Zhelezov, A, Zheng, Y, Zhu, X, Zhukov, V, Zonneveld, JB and Zucchelli, S (2019) Measurement of the relative <i>B</i><SUP>-</SUP> → <i>D</i><SUP>0</SUP>/<i>D</i>*<SUP>0</SUP>/<i>D</i>**<SUP>0</SUP>μ<SUP>-</SUP>(ν)over-bar_μ branching fractions using <i>B</i><SUP>-</SUP> mesons from &lt;(<i>B</i>)over bar&gt;_S2*<SUP>0</SUP> decays. PHYSICAL REVIEW D, 99 (9). 092009-.

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Abstract

The decay of the narrow resonance $\overline{B}{}_{s2}^{*0}\!\rightarrow B^- K^+$ can be used to determine the $B^-$ momentum in partially reconstructed decays without any assumptions on the decay products of the $B^-$ meson. This technique is employed for the first time to distinguish contributions from $D^0$, $D^{*0}$, and higher-mass charmed states ($D^{**0}$) in semileptonic $B^-$ decays by using the missing-mass distribution. The measurement is performed using a data sample corresponding to an integrated luminosity of 3.0 fb${}^{-1}$ collected with the LHCb detector in $pp$ collisions at center-of-mass energies of 7 and 8 TeV. The resulting branching fractions relative to the inclusive $B^- \!\rightarrow D^0 X \mu^- \overline{\nu}_\mu$ are $f_{D^0} = \mathcal{B}( B^- \rightarrow D^0\mu^-\overline{\nu}_\mu )/\mathcal{B}( B^- \rightarrow D^0 X \mu^- \overline{\nu}_\mu ) = 0.25 \pm 0.06$, $f_{D^{**0}} = \mathcal{B}( B^- \rightarrow ( D^{**0} \rightarrow D^0 X)\mu^-\overline{\nu}_\mu )/\mathcal{B}( B^- \rightarrow D^0 X \mu^- \overline{\nu}_\mu ) = 0.21 \pm 0.07$, with $f_{D^{*0}} = 1 - f_{D^0} - f_{D^{**0}}$ making up the remainder.

Item Type:	Article
Additional Information:	All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2018-024.html . v2 includes minor text changes and two additional subfigures added during journal review
Uncontrolled Keywords:	hep-ex, hep-ex
Depositing User:	Symplectic Admin
Date Deposited:	20 Jan 2020 16:41
Last Modified:	07 Oct 2023 03:17
DOI:	10.1103/PhysRevD.99.092009
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3071034