Conveners
Flavor I
- Sandra Kvedaraite
- Sandra Kvedaraite
-
Deepak Sathyan09/05/2022, 14:15
We propose a technique to measure the top quark mass using $B$-hadron decay lengths extracted from $ t \bar{t}$ events. When the top quark is produced unpolarized with an arbitrary boost distribution, the peak of the $b$ quark's energy distribution is identical to its single-valued energy in the rest frame of the top quark. The peak energy is a function of the top quark's mass and the mass of...
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Sagar Airen09/05/2022, 14:30
We discuss the implementation of the newly proposed method to measure top quark mass using B hadron decay lengths. This method is based on the energy peak idea, and implemented by CMS [CMS PAS TOP-15-002]. Instead of using $b$ jet energies, the new method uses $B$-hadron decay lengths, and hence not festered by JES uncertainty. The proposed method also improves upon previous technique to...
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Mitrajyoti Ghosh (Cornell University)09/05/2022, 14:45
The $K \to \mu^+ \mu^-$ decay is often considered to be uninformative of fundamental theory parameters since the decay is polluted by long-distance hadronic effects. We demonstrate that, using very mild assumptions and utilizing time-dependent interference effects, $ \mathcal{B} (K_S \to \mu^+ \mu^-)_{ℓ=0}$ can be experimentally determined without the need to separate the $\ell=0$ and $\ell=1$...
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Elias Bernreuther (Fermilab)09/05/2022, 15:00
Dark showers from strongly interacting dark sectors that confine at the GeV scale can give rise to novel signatures at electron-positron colliders. In my talk, I will discuss the sensitivity of B factory experiments to dark showers produced through an effective interaction arising from a heavy off-shell mediator. I will show that a prospective search for displaced vertices at Belle II can...
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Mark Farino (University of Pittsburgh)09/05/2022, 15:15
We search for the SM decays $\bar{B}^{0} \to \bar{\Lambda}^{0} \Omega_{c}^{0}$ and $\bar{B}^{0} \to \bar{\Lambda}^{0} \Omega_{c}(2770)^{0}$, and BSM decays $\bar{B}^{0} \to \bar{\Lambda}^{0}\bar{\Omega}_{c}^{0}$ and $\bar{B}^{0} \to \bar{\Lambda}^{0}\bar{\Omega}_{c}(2770)^{0}$ using the full Belle data sample of 711~${\rm fb^{-1}}$ that contains 772 million $B\bar{B}$ pairs collected at the...
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Tianping Gu (University of Pittsburgh)09/05/2022, 15:30
We report on the first search for baryon-number-violating decay $B^- \to \bar{\Xi}_c^0 \Lambda_c^-$ using data collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. The results are also interpreted in terms of the previously-discovered Standard Model decay $B^- \to \Xi_c^0 \Lambda_c^-$ followed by possible $\Xi_c^0-\bar{\Xi}_c^0$ oscillations. The measurements of...
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Florian Herren (Fermilab)09/05/2022, 15:45
The forward-backward asymmetry $\mathcal{A}_\mathrm{FB}$ in inclusive $B\rightarrow X l \nu$ decays is an observable with great potential to improve inclusive determinations of $|V_{cb}|$ and to test lepton flavor universality in tree-level charged current decays. In this talk we discuss the advantages of measuring $\mathcal{A}_\mathrm{FB}$ at Belle II employing a cut on the invariant mass of...
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