2023-11-27 15:05 |
[PUBDB-2023-07214]
Preprint
Adachi, I. ; Adamczyk, K. ; Aggarwal, L. ; et al
Evidence for $B^{+}\to K^{+}\nu\bar{\nu}$ Decays
[Belle II Preprint 2023-017; KEK Preprint 2023-35; arXiv:2311.14647]
We search for the rare decay $B^{+}\rightarrow K^{+}\nu\bar{\nu}$ in a $362\ \rm{fb}^{-1}$ sample of electron-positron collisions at the $\Upsilon(4S)$ resonance collected with the Belle II detector at the SuperKEKB collider. We use the inclusive properties of the accompanying $B$ meson in $\Upsilon(4S) \to B\kern 0.18em\overline{\kern -0.18em B}{}$ events to suppress background from other decays of the signal $B$ candidate and light-quark pair production. [...]
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2023-11-27 14:17 |
[PUBDB-2023-07211]
Preprint
Aguilar, J. A. ; Allison, P. ; Besson, D. ; et al
Radiofrequency Ice Dielectric Measurements at Summit Station, Greenland
[arXiv:2212.10285]
We recently reported on the radio-frequency attenuation length of cold polar ice at Summit Station, Greenland, based on bistatic radar measurements of radio-frequency bedrock echo strengths taken during the summer of 2021. Those data also include echoes attributed to stratified impurities or dielectric discontinuities within the ice sheet (layers), which allow studies of a) estimation of the relative contribution of coherent (discrete layers, e.g.) vs. [...]
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2023-11-27 12:10 |
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2023-11-27 11:54 |
[PUBDB-2023-07201]
Preprint
Afshordi, N. ; Akçay, S. ; Seoane, P. A. ; et al
Waveform Modelling for the Laser Interferometer Space Antenna
[arXiv:2311.01300]
LISA, the Laser Interferometer Space Antenna, will usher in a new era in gravitational-wave astronomy. As the first anticipated space-based gravitational-wave detector, it will expand our view to the millihertz gravitational-wave sky, where a spectacular variety of interesting new sources abound: from millions of ultra-compact binaries in our Galaxy, to mergers of massive black holes at cosmological distances; from the beginnings of inspirals that will venture into the ground-based detectors' view to the death spiral of compact objects into massive black holes, and many sources in between. [...]
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2023-11-27 11:47 |
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2023-11-27 11:42 |
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2023-11-27 09:27 |
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2023-11-23 11:12 |
[PUBDB-2023-07136]
Preprint
Aad, G. ; Abbott, B. K. ; Abeling, K. ; et al
New techniques for jet calibration with the ATLAS detector
[CERN-EP-2023-028; arXiv:2303.17312]
A determination of the jet energy scale is presented using proton–proton collision data with a centre-of-mass energy of $\sqrt{s}=13$ TeV, corresponding to an integrated luminosity of 140 fb$^{-1}$ collected using the ATLAS detector at the LHC. Jets are reconstructed using the ATLAS particle-flow method that combines charged-particle tracks and topo-clusters formed from energy deposits in the calorimeter cells. [...]
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2023-11-20 12:48 |
[PUBDB-2023-07014]
Preprint
Adachi, I. ; Adamczyk, K. ; Aggarwal, L. ; et al
First measurement of $R(X_{\tau/\ell})$ as an inclusive test of the $b \to c \tau \nu$ anomaly
[Belle II Preprint 2023-016; KEK Preprint 2023-34; arXiv:2311.07248]
We measure the tau-to-light-lepton ratio of inclusive $B$-meson branching fractions $R(X_{\tau/\ell}) \equiv \mathcal{B}(B\to X \tau \nu)/\mathcal{B}(B \to X \ell \nu)$, where $\ell$ indicates an electron or muon, and thereby test the universality of charged-current weak interactions. We select events that have one fully reconstructed $B$ meson and a charged lepton candidate from $189~\mathrm{fb}^{-1}$ of electron-positron collision data collected with the Belle II detector. [...]
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2023-11-17 12:53 |
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