P. Urquijo
A5052038948- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Neutrino Physics Research
- Cosmology and Gravitation Theories
- Particle Accelerators and Free-Electron Lasers
- Black Holes and Theoretical Physics
- Medical Imaging Techniques and Applications
- Atomic and Subatomic Physics Research
- Radiation Detection and Scintillator Technologies
- Distributed and Parallel Computing Systems
- Astrophysics and Cosmic Phenomena
- Superconducting Materials and Applications
- Nuclear physics research studies
- Scientific Computing and Data Management
- Particle accelerators and beam dynamics
- Muon and positron interactions and applications
- Advanced NMR Techniques and Applications
- CCD and CMOS Imaging Sensors
- Advanced Data Storage Technologies
- Nuclear Physics and Applications
- Scientific Research and Discoveries
The University of Melbourne
2015-2024
Brandeis University
2022-2024
ARC Centre of Excellence for Dark Matter Particle Physics
2022-2024
Federación Española de Enfermedades Raras
2024
SR Research (Canada)
2024
A. Alikhanyan National Laboratory
2024
Atlas Scientific (United States)
2024
The University of Adelaide
2014-2023
Slovak Academy of Sciences
2023
Institute of Experimental Physics of the Slovak Academy of Sciences
2023
This article reports world averages of measurements $b$-hadron, $c$-hadron, and $\tau$-lepton properties obtained by the Heavy Flavor Averaging Group using results available through summer 2016. For averaging, common input parameters used in various analyses are adjusted (rescaled) to values, known correlations taken into account. The include branching fractions, lifetimes, neutral meson mixing parameters, \CP~violation semileptonic decays CKM matrix elements.
This paper reports world averages of measurements $b$-hadron, $c$-hadron, and $\tau$-lepton properties obtained by the Heavy Flavor Averaging Group using results available through September 2018. In rare cases, significant several months later are also used. For averaging, common input parameters used in various analyses adjusted (rescaled) to values, known correlations taken into account. The include branching fractions, lifetimes, neutral meson mixing parameters, CP violation semileptonic...
We present the physics program of Belle II experiment, located on intensity frontier SuperKEKB $e^+e^-$ collider. collected its first collisions in 2018, and is expected to operate for next decade. It anticipated collect 50/ab collision data over lifetime. This book outcome a joint effort collaborators theorists through theory interface platform (B2TiP), an that commenced 2014. The aim B2TiP was elucidate potential impacts program, which includes wide scope topics: B physics, charm, tau,...
This article reports world averages for measurements of b-hadron, c-hadron, and tau-lepton properties obtained by the Heavy Flavor Averaging Group (HFAG) using results available at least through end 2009. Some presented use data spring 2010. For averaging, common input parameters used in various analyses are adjusted (rescaled) to values, known correlations taken into account. The include branching fractions, lifetimes, neutral meson mixing parameters, CP violation semileptonic decays.
This article summarizes the status of global fit Cabibbo-Kobayashi-Maskawa (CKM) parameters within Standard Model performed by CKMfitter group. Special attention is paid to inputs for CKM angles $\ensuremath{\alpha}$ and $\ensuremath{\gamma}$ ${B}_{s}\ensuremath{\rightarrow}\ensuremath{\mu}\ensuremath{\mu}$ ${B}_{d}\ensuremath{\rightarrow}\ensuremath{\mu}\ensuremath{\mu}$ decays. We illustrate current situation other unitarity triangles. also discuss constraints on generic...
This paper reports world averages of measurements $b$-hadron, $c$-hadron, and $\tau$-lepton properties obtained by the Heavy Flavour Averaging Group using results available before April 2021. In rare cases, significant several months later are also used. For averaging, common input parameters used in various analyses adjusted (rescaled) to values, known correlations taken into account. The include branching fractions, lifetimes, neutral meson mixing parameters, CP violation semileptonic...
The experimental results on the ratios of branching fractions R(D)=B(B[over ¯]→Dτ^{-}ν[over ¯]_{τ})/B(B[over ¯]→Dℓ^{-}ν[over ¯]_{ℓ}) and R(D^{*})=B(B[over ¯]→D^{*}τ^{-}ν[over ¯]→D^{*}ℓ^{-}ν[over ¯]_{ℓ}), where ℓ denotes an electron or a muon, show long-standing discrepancy with standard model predictions, might hint at violation lepton flavor universality. We report new simultaneous measurement R(D) R(D^{*}), based data sample containing 772×10^{6} BB[over ¯] events recorded ϒ(4S) resonance...
In the original version of this manuscript, an error was introduced on pp352. '2.7nb:1.6nb' has been corrected to '2.4nb:1.3nb' in current online and printed version. doi:10.1093/ptep/ptz106.
This article reports world averages for measurements of b-hadron and c-hadron properties obtained by the Heavy Flavor Averaging Group (HFAG) using results available at end 2007. For averaging, common input parameters used in various analyses are adjusted (rescaled) to values, known correlations taken into account. The include branching fractions, lifetimes, neutral meson mixing parameters, CP violation semileptonic decays.
We present a new measurement of the Cabibbo-Kobayashi-Maskawa matrix element $|{V}_{cb}|$ from ${B}^{0}\ensuremath{\rightarrow}{D}^{*\ensuremath{-}}{\ensuremath{\ell}}^{+}{\ensuremath{\nu}}_{\ensuremath{\ell}}$ decays, reconstructed with full Belle data set $711\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ integrated luminosity. Two form factor parametrizations, originally conceived by Caprini-Lellouch-Neubert (CLN) and Boyd, Grinstein Lebed (BGL) groups, are used to extract product...
The full event interpretation is presented: a new exclusive tagging algorithm used by the high-energy physics experiment Belle II. experimental setup of II allows precise measurement otherwise inaccessible B meson decay modes. Full Event Interpretation enables many these measurements. relies on machine learning to automatically identify plausible chains based data recorded detector. Compared similar algorithms employed previous experiments, provides greater efficiency, yielding larger...
The differential cross section for the process $\ensuremath{\gamma}\ensuremath{\gamma}\ensuremath{\rightarrow}\ensuremath{\eta}{\ensuremath{\pi}}^{0}$ has been measured in kinematic range $0.84\text{ }\text{ }\mathrm{GeV}<W<4.0\text{ }\mathrm{GeV}$, $|\mathrm{cos}{\ensuremath{\theta}}^{*}|<0.8$, where $W$ and ${\ensuremath{\theta}}^{*}$ are energy ${\ensuremath{\pi}}^{0}$ (or $\ensuremath{\eta}$) scattering angle, respectively, $\ensuremath{\gamma}\ensuremath{\gamma}$ center-of-mass system....
SABRE aims to directly measure the annual modulation of dark matter interaction rate with NaI(Tl) crystals. A compatible standard hypothesis in which our Galaxy is embedded a halo has been measured by DAMA experiment same target material. Other direct detection experiments, using different materials, seem exclude interpretation such simplest scenario WIMP-nucleon elastic scattering. The carry out an independent search sufficient sensitivity confirm or refute claim. concept and goal obtain...
Ultra-pure NaI(Tl) crystals are the key element for a model-independent verification of long standing DAMA result and powerful means to search annual modulation signature dark matter interactions. The SABRE collaboration has been developing cutting-edge techniques reduction intrinsic backgrounds over several years. In this paper we report first characterization 3.4 kg crystal, named NaI-33, performed in an underground passive shielding setup at LNGS. NaI-33 record low $^{39}$K contamination...
We present a study of fits to exclusive ${B}^{0}\ensuremath{\rightarrow}{D}^{*\ensuremath{-}}{\ensuremath{\ell}}^{+}{\ensuremath{\nu}}_{\ensuremath{\ell}}$ measurements for the determination Cabibbo-Kobayashi-Maskawa matrix element magnitude $|{V}_{cb}|$, based on most recent Belle untagged measurement. Results are obtained with Caprini-Lellouch-Neubert (CLN) and Boyd-Grinstein-Lebed (BGL) form factor parametrizations, without inclusion preliminary lattice QCD (LQCD) factors at nonzero...
We report a measurement of the inclusive electron energy spectrum for charmed semileptonic decays $B$ mesons in $140\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ data sample collected at $\ensuremath{\Upsilon}(4S)$ resonance with Belle detector KEKB asymmetric ${e}^{+}{e}^{\ensuremath{-}}$ collider. determine first four moments threshold values between 0.4 and 2.0 GeV. In addition, we provide partial branching fraction (zeroth moment) same energies, independent measurements ${B}^{+}$...
We present the partial branching fraction for inclusive charmless semileptonic $B$ decays and corresponding value of Cabibbo-Kobayashi-Maskawa matrix element $|{V}_{ub}|$, using a multivariate analysis method to access $\ensuremath{\sim}90%$ $B\ensuremath{\rightarrow}{X}_{u}\ensuremath{\ell}\ensuremath{\nu}$ phase space. This approach dramatically reduces theoretical uncertainties from $b$-quark mass nonperturbative QCD compared all previous measurements. The results are based on sample...
We have performed measurements of sodium nuclear recoils in NaI:Tl crystals, following scattering by neutrons produced a $^{7}$Li(p,n)$^{7}$Be reaction. Understanding the light output from such recoils, which is reduced relative to electrons equivalent energy quenching factor, critical interpret dark matter experiments that search for interactions. developed spectrum-fitting methodology extract factor our measurements, and report factors recoil energies between 36 401 keV. Our results agree...
We investigate a new production mechanism of axionlike particle (ALP) from <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>B</a:mi></a:math> meson annihilation decays and its observation potential at the Belle II experiments. This allows for ALP <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mi>B</c:mi></c:math> in association with large variety mesons. In this article, we first estimate branching ratios such processes perturbative QCD...
Using the previous Belle measurement of inclusive photon energy in B→Xsγ decays, we determine first and second moments this spectrum for minimum energies B meson rest frame ranging from 1.8 to 2.3 GeV. Combining these measurements with recent data on lepton hadronic mass B→Xcℓν perform fits theoretical expressions derived 1S kinetic schemes extract magnitude Cabibbo-Kobayashi-Maskawa matrix element Vcb, b-quark mass, other nonperturbative parameters. In scheme analysis find...