Št. zadetkov: 13
Magistrsko delo
Oznake:
fizika osnovnih delcev;mezoni s kvarkom b;radiativni razpadi mezonov;Standardni Model;Nova Fizika;Belle II;SuperKEKB;
V magistrskem delu na simuliranem vzorcu podatkov detektorja Belle II
opravimo študijo meritve razvejitvenih razmerij redkih radiativnih razpadov $B^{\scriptscriptstyle 0}\rightarrow \rho^{\scriptscriptstyle 0}\gamma$ in $B^{\scriptscriptstyle0}\rightarrow K^{\scriptscriptstyle *0}\gamma$ ter od t ...
Leto:
2020
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
elementary particle physics;particle detectors;Belle II detector;ring imaging Cherenkov counters;
We have developed a new type of particle identification device, called an aerogel ring imaging Cherenkov (ARICH) counter, for the Belle II experiment. It uses silica aerogel tiles as Cherenkov radiators. For detection of Cherenkov photons, hybrid avalanche photo-detectors (HAPDs) are used. The desig ...
Leto:
2016
Vir:
Digitalna knjižnica Univerze v Mariboru (DKUM)
Izvirni znanstveni članek
Oznake:
proximity focusing RICH with an aerogel radiator;operation;slow control;
Since 2018, an Proximity Focusing Aerogel Ring Imaging Detector (ARICH) efficiently separates hadrons in the forward end-cap of the Belle II spectrometer. Cherenkov photons emitted in the double-layer aerogel radiator are expanded in 16-cm space and detected on the photon detector, which consists of ...
Leto:
2023
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
Particle & resonance production;Quark & gluon jets;Quark-gluon plasma;
The measurement of two-particle angular correlation functions in high-multiplicity e+e− collisions at √s=10.52 GeV is reported. In this study, the 89.5 fb−1 of hadronic e+e− annihilation data collected by the Belle detector at KEKB are used. Two-particle angular correlation functions are measured ...
Leto:
2022
Vir:
Fakulteta za kemijo in kemijsko tehnologijo (UM FKKT)
Izvirni znanstveni članek
Oznake:
We report results from a search for the decay B0s→ηη using 121.4 fb−1 of data collected at the Υ(5S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. We do not observe any signal and set an upper limit on the branching fraction of 14.3×10−5 at 90% confidence level. Thi ...
Leto:
2022
Vir:
Fakulteta za kemijo in kemijsko tehnologijo (UM FKKT)
Izvirni znanstveni članek
Oznake:
branching fraction;hadronic decays;particle decays;mesons;CP violation;precision measurements;
We measure the branching fractions and CP asymmetries for the decays B⁰ → D¯ 0π⁰ and B⁺ → D¯ 0π⁺, using a data sample of 772 × 10⁶ BB¯ pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB e⁺e− collider. The branching fractions obtained and direct CP asym-metries are B(B⁰ → D¯ 0 ...
Leto:
2022
Vir:
Fakulteta za kemijo in kemijsko tehnologijo (UM FKKT)
S. Uehara,
Marko Bračko,
Boštjan Golob,
Jure Klučar,
Samo Korpar,
Peter Križan,
Rok Pestotnik,
Marko Petrič,
Marko Starič,
Luka Šantelj,
Anže Zupanc
Izvirni znanstveni članek
Oznake:
C00;C05;C07;C21;quantum chromodynamics;quark model;particle properties;lepton collider experiments;experimental particle physics;
We report a high-statistics measurement of the differential cross section of the process $\gamma \gamma \to K^0_S K^0_S$ in the range $1.05\,{\mathrm {GeV}} \leq W \leq 4.00$ , where W is the center-of-mass energy of the colliding photons, using 972 $^{-1}$ of data collected with the Belle detector ...
Leto:
2013
Vir:
Fakulteta za kemijo in kemijsko tehnologijo (UM FKKT)
T. Iwashita,
Marko Bračko,
Boštjan Golob,
Jure Klučar,
Samo Korpar,
Peter Križan,
Rok Pestotnik,
Marko Petrič,
Marko Starič,
Luka Šantelj,
Anže Zupanc
Izvirni znanstveni članek
Oznake:
C07;C21;particle properties;lepton collider experiments;experimental particle physics;
We report an observation of the $B^{\pm } \to J/\psi \eta K^{\pm }$ and $B^0 \to J/\psi \eta K^0_S$ decays using $772\times 10^{6}B\overline {B}$ pairs collected at the $\Upsilon (4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. We obtain the branching fraction ...
Leto:
2014
Vir:
Fakulteta za kemijo in kemijsko tehnologijo (UM FKKT)
Luka Šantelj,
Marko Bračko,
Boštjan Golob,
Samo Korpar,
Peter Križan,
Tara Nanut,
Rok Pestotnik,
Marko Petrič,
Eva Ribežl,
Marko Starič,
Anže Zupanc
Izvirni znanstveni članek
Oznake:
CP violation;CKM angle beta;e+-e- Experiments;B physics;
We present a measurement of the time-dependent CP violation parameters in B0 → η′K0 decays. The measurement is based on the full data sample containing 772 × 10^6 BB pairs collected at the Υ(4S) resonance using the Belle detector at the KEKB asymmetric-energy e+e− collider. The measured values of th ...
Leto:
2014
Vir:
Fakulteta za kemijo in kemijsko tehnologijo (UM FKKT)
A. Vinokurova,
Marko Bračko,
Boštjan Golob,
Samo Korpar,
Peter Križan,
Rok Pestotnik,
Marko Petrič,
Eva Ribežl,
Samo Stanič,
Marko Starič,
Luka Šantelj,
Anže Zupanc
Izvirni znanstveni članek
Oznake:
exotics;quarkonium;e+-e- experiments;B physics;particle and resonance production;
We report a search for B decays to selected final states with the ηc meson: B± → K±ηcπ+π−, B± → K±ηcω, B± → K±ηcη and B± → K±ηcπ0. The analysis is based on 772 × 10^6 B¯B pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. We set 90% confidence ...
Leto:
2015
Vir:
Fakulteta za kemijo in kemijsko tehnologijo (UM FKKT)