PoS - Proceedings of Science
Volume 398 - The European Physical Society Conference on High Energy Physics (EPS-HEP2021) - T08: Flavour Physics and CP Violation
Study of hadronic <span class="math inline">\(B\)</span> and <span class="math inline">\(B_s\)</span> decays at Belle
S. Dubey
Full text: Not available
Abstract
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<p>We report the first search for the penguin-dominated process <span class="math inline">\(B_{s}^{0} \to \eta^{\prime} X_{s\bar{s}}\)</span> using a semi-inclusive method. In the absence of a statistically significant signal, we set a 90% confidence-level upper limit 1.4 <span class="math inline">\(\times 10^{-3}\)</span> on the partial branching fraction where <span class="math inline">\(M(X_{s\bar{s}}) \leq 2.4\,{\rm GeV/}c^{2}\)</span>. We also report final results for the <span class="math inline">\(B^{0}_{s} \to D_{s}^{-} X\)</span> and <span class="math inline">\(B^{0}_{s} \to \eta \eta^{\prime}\)</span> decays. These results are obtained using 121.4<span class="math inline">\(\,{\rm fb}^{-1}\)</span> data collected at the <span class="math inline">\(\Upsilon(5S)\)</span> resonance by the Belle experiment at the KEKB asymmetric-energy <span class="math inline">\(e^{+}e^{-}\)</span> collider. Furthermore, we report a measurement involving the three-body decay <span class="math inline">\(B^{+} \to K^{+} K^{-} \pi^{+}\)</span> based on the Belle data collected at the <span class="math inline">\(\Upsilon(4S)\)</span> resonance.</p>
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