Search for the decay $B^0_s\to\overline{D}^0f_0(980)$

Information

LHCb-PAPER-2015-012
CERN-PH-EP-2015-086
arXiv:1505.01654 [PDF]

ancillary file

(Submitted on 07 May 2015)
JHEP 08 (2015) 005
Inspire 1367305

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Abstract

A search for $B_s^0 \to \overline{D}^{0} f_{0}(980)$ decays is performed using $3.0 {\rm fb}^{-1}$ of $pp$ collision data recorded by the LHCb experiment during 2011 and 2012. The $f_{0}(980)$ meson is reconstructed through its decay to the $\pi^{+}\pi^{-}$ final state in the mass window $900 {\rm MeV}/c^{2} < m(\pi^{+}\pi^{-}) < 1080 {\rm MeV}/c^{2}$. No significant signal is observed. The first upper limits on the branching fraction of $\mathcal{B}(B_s^0 \to \overline{D}^{0} f_{0}(980)) < 3.1 (3.4) \times 10^{-6}$ are set at $90 \%$ ($95 \%$) confidence level.

Figures and captions

Invariant mass distribution of candidates in the $\overline{ D }{} {}^0 \pi ^+ \pi ^- $ data sample with fit results overlaid, shown on a logarithmic scale. The components are as detailed in the legend. The labels (a) to (e) show the NN bins with increasing purity. The NN binning scheme is described in Sec. 4.	Fig1a.pdf [28 KiB] HiDef png [217 KiB] Thumbnail [174 KiB] *.C file
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Invariant mass distribution of candidates in the $\overline{ D }{} {}^0 f_0(980)$ data sample with fit results overlaid, shown on a logarithmic scale. The components are as detailed in the legend. The labels (a) to (e) show the NN bins with increasing purity. The NN binning scheme is described in Sec. 4.	Fig2a.pdf [24 KiB] HiDef png [236 KiB] Thumbnail [188 KiB] *.C file
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Animated gif made out of all figures.	PAPER-2015-012.gif Thumbnail

Tables and captions

Yields from the fit to the $\overline{ D }{} {}^0 \pi ^+ \pi ^- $ and $\overline{ D }{} {}^0 f_0(980)$ samples.	Table_1.pdf [53 KiB] HiDef png [83 KiB] Thumbnail [40 KiB] tex code
Summary of systematic uncertainties on the ratio of branching fractions.	Table_2.pdf [33 KiB] HiDef png [87 KiB] Thumbnail [40 KiB] tex code
Results for branching fractions for $ B ^0_{( s )} \rightarrow \overline{ D }{} {}^0 f_0(500)$ and $ B ^0_{( s )} \rightarrow \overline{ D }{} {}^0 f_0(980)$ decays. All quoted results correspond to branching fraction for $f_0 \rightarrow \pi ^+ \pi ^- $ of $100 \%$. There is no experimental result for ${\cal B}( B ^0_ s \rightarrow \overline{ D }{} {}^0 f_0(500))$.	Table_3.pdf [48 KiB] HiDef png [27 KiB] Thumbnail [12 KiB] tex code

Supplementary Material [file]

Supplementary material full pdf	supple[..].pdf [348 KiB]
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