A5078059879- 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
- Medical Imaging Techniques and Applications
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Radiation Detection and Scintillator Technologies
- Nuclear physics research studies
- Black Holes and Theoretical Physics
- Superconducting Materials and Applications
- Astrophysics and Cosmic Phenomena
- Nuclear Physics and Applications
- Particle accelerators and beam dynamics
- Laser-Plasma Interactions and Diagnostics
- Diamond and Carbon-based Materials Research
- Distributed and Parallel Computing Systems
- Gamma-ray bursts and supernovae
- High-pressure geophysics and materials
- Advanced NMR Techniques and Applications
- Radioactive Decay and Measurement Techniques
Princeton University
2016-2025
Institute of High Energy Physics
2010-2024
University of Antwerp
2024
A. Alikhanyan National Laboratory
2014-2024
University of Puerto Rico-Mayaguez
2023
University of Belgrade
2016
Vinča Institute of Nuclear Sciences
2016
The Ohio State University
1996-2015
European Organization for Nuclear Research
2010-2014
Austrian Academy of Sciences
2012
We report the observation of a narrow charmoniumlike state produced in exclusive decay process B+/--->K+/-pi(+)pi(-)J/psi. This state, which decays into pi(+)pi(-)J/psi, has mass 3872.0+/-0.6(stat)+/-0.5(syst) MeV, value that is very near M(D0)+M(D(*0)) threshold. The results are based on an analysis 152M B-Bmacr; events collected at Upsilon(4S) resonance Belle detector KEKB collider. signal statistical significance excess 10sigma.
The cross section for ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}J/\ensuremath{\psi}$ between 3.8 and $5.5\text{ }\text{ }\mathrm{GeV}/{c}^{2}$ is measured using a $548\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ data sample collected on or near the $\ensuremath{\Upsilon}(4S)$ resonance with Belle detector at KEKB. A peak $4.25\text{ }\mathrm{GeV}/{c}^{2}$, corresponding to so called $Y(4260)$, observed. In addition, there another...
We report the first observation of two charmed strange baryons that decay into Lambda(c)(+)Kappa(-)pi(+). The broader states is measured to have a mass 2978.5+/-2.1+/-2.0 MeV/c2 and width 43.5+/-7.5+/-7.0 MeV/c2. narrow state are be 3076.7+/-0.9+/-0.5 MeV/c;{2} 6.2+/-1.2+/-0.8 MeV/c2, respectively. also perform search for isospin partner Lambda(c)(+)Kappa(0)/(s)pi(-) observe significant signal at 3082.8+/-1.8+/-1.5 data used this analysis were accumulated or near Upsilon(4S) resonance, using...
We observe evidence for D0−¯¯¯D0 mixing by measuring the difference in apparent lifetime when a D0 meson decays to CP eigenstates K+K− and π+π− it final state K−π+. find relative of lifetimes yCP be [1.31±0.32(stat)±0.25(syst)]%, 3.2 standard deviations from zero. also search asymmetry between ¯¯¯D0 decays; no violation is found. These results are based on 540 fb−1 data recorded Belle detector at KEKB e+e− collider.Received 31 March 2007DOI:https://doi.org/10.1103/PhysRevLett.98.211803©2007...
The reaction ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{e}^{+}{e}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ has been analyzed using 97 ${\mathrm{pb}}^{\ensuremath{-}1}$ of data taken with the Crystal Ball detector at DESY ${e}^{\ensuremath{-}}{e}^{+}$ storage ring DORIS II beam energies around 5.3 GeV. For first time we have measured cross section for $\ensuremath{\gamma}\ensuremath{\gamma}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$...
We report results on a Dalitz analysis of three-body charmless ${B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{K}^{\ifmmode\pm\else\textpm\fi{}}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}{\ensuremath{\pi}}^{\ensuremath{\mp}}$ decay including searches for direct $CP$ violation. the first observation ${B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{f}_{2}(1270){K}^{\ifmmode\pm\else\textpm\fi{}}$ with statistical significance above $6\ensuremath{\sigma}$. also...
From a Dalitz plot analysis of $B\ensuremath{\rightarrow}K{\ensuremath{\pi}}^{+}{\ensuremath{\psi}}^{\ensuremath{'}}$ decays, we find signal for $Z(4430{)}^{+}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\psi}}^{\ensuremath{'}}$ with mass $M=({4443}_{\ensuremath{-}12\ensuremath{-}13}^{+15+19})\text{ }\text{ }\mathrm{MeV}/{c}^{2}$, width $\ensuremath{\Gamma}=({107}_{\ensuremath{-}43\ensuremath{-}56}^{+86+74})\text{ }\mathrm{MeV}$, product branching fraction...
An event consistent with the signature expected for rare kaon decay ${K}^{+}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}\ensuremath{\nu}\overline{\ensuremath{\nu}}$ has been observed. In pion momentum region examined, $211<P<230\mathrm{MeV}/c$, backgrounds are estimated to contribute $0.08\ifmmode\pm\else\textpm\fi{}0.03$ events. If is due ${K}^{+}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}\ensuremath{\nu}\overline{\ensuremath{\nu}}$, branching ratio...
We present the first measurement of decay amplitudes in B→φK* and measurements branching fractions B→φK(*) decays based on 78.1 fb−1 data recorded at Υ(4S) resonance with Belle detector KEKB e+e− storage ring. The for different φK*0 helicity states are measured from angular distributions final state particles transversity basis. longitudinal transverse complex |A0|2=0.43±0.09±0.04, |A⊥|2=0.41±0.10±0.04, arg(A∥)=−2.57±0.39±0.09, arg(A⊥)=0.48±0.32±0.06. direct CP-violating asymmetries found to...
We present a measurement of the unitarity triangle angle ${\ensuremath{\phi}}_{3}$ using Dalitz plot analysis three-body decay neutral $D$ meson from ${B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{D}^{(*)}{K}^{\ifmmode\pm\else\textpm\fi{}}$ process. The method employs interference between ${D}^{0}$ and $\overline{{D}^{0}}$ to extract both weak strong phases. apply this $140\text{ }\text{ }{\mathrm{f}\mathrm{b}}^{\ensuremath{-}1}$ data sample collected by Belle experiment. uses...
Experiment E949 at Brookhaven National Laboratory studied the rare decay \$K^+\to\pi^+\nu\bar{\nu}$ and other processes with an exposure of $1.77\times 10^{12}$ $K^+$'s. The data were analyzed using a blind analysis technique yielding one candidate event estimated background $0.30\pm0.03$ events. Combining this result observation two events by predecessor experiment E787 gave branching ratio ${\calB}(K^+\to\pi^+\nu\bar{\nu})=(1.47^{+1.30}_{-0.89})\times 10^{-10}$, consistent Standard Model...
Results from ${K}^{\ifmmode\pm\else\textpm\fi{}}$ elastic and inelastic scattering $^{12}\mathrm{C}$ $^{40}\mathrm{Ca}$ are reported. The data were all taken at an incident momentum of 800 MeV/c over angular range 2\ifmmode^\circ\else\textdegree\fi{} to 38\ifmmode^\circ\else\textdegree\fi{}. compared first-order optical model calculations in coordinate space; good qualitative agreement is obtained. (from only) distorted-wave Born approximation calculations, found if "realistic" transition...
We report measurements of the exclusive cross section for e+e−→D0D−π+ over center-of-mass energy range 4.0 GeV to 5.0 with initial-state radiation and first observation decay ψ(4415)→D0D−π+. From a study resonant substructure in ψ(4415) we conclude that ψ(4415)→D0D−π+ is dominated by ψ(4415)→DD¯2*(2460). obtain B(ψ(4415)→D0D−πnonresonant+)/B(ψ(4415)→DD¯2*(2460)→D0D−π+)<0.22 at 90% C.L. The analysis based on data sample collected Belle detector an integrated luminosity 673 fb−1.Received 24...
Abstract Objective: This paper introduces a novel PET imaging methodology called 3-dimensional positron (3DΠ), which integrates total-body (TB) coverage, time-of-flight (TOF) technology, ultra-low dose capabilities, and ultra-fast readout electronics inspired by emerging technology from the DarkSide collaboration. Approach: The study evaluates performance of 3DΠ using Monte Carlo simulations based on NEMA NU 2-2018 protocols. employs homogenous, monolithic scintillator composed liquid argon...
We report the first observation of charmless vector-vector decay process B∓→ρ∓ρ0. The measurement uses a 78 fb−1 data sample collected with Belle detector at KEKB asymmetric e+e− collider operating Υ(4S) resonance. obtain branching fraction B(B∓→ρ∓ρ0)=[31.7±7.1(stat)−6.7+3.8(syst)]×10−6. An analysis ρ helicity-angle distributions gives longitudinal polarization ΓL/Γ=0.95±0.11(stat)±0.02(syst). also measure direct-CP-violating asymmetry ACP(B∓→ρ∓ρ0)=0.00±0.22(stat)±0.03(syst).Received 3 June...
We present a measurement of the unitarity triangle angle ${\ensuremath{\phi}}_{3}$ using Dalitz plot analysis ${K}_{S}^{0}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ decay neutral $D$ meson from ${B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{D}^{(*)}{K}^{(*)\ifmmode\pm\else\textpm\fi{}}$ process. The method exploits interference between ${D}^{0}$ and ${\overline{D}}^{0}$ to extract ${\ensuremath{\phi}}_{3}$, strong phase $\ensuremath{\delta}$ ratio $r$ suppressed...
We present new measurements of CP-violation parameters in B0 -> phiK0, K+K-Ks, f0(980)Ks, eta'Ks, omegaKs and Kspi0 decays based on a sample 275 x 10^6 BBbar pairs collected at the Upsilon(4S) resonance with Belle detector KEKB energy-asymmetric e+e- collider. One neutral B meson is fully reconstructed one specified decay channels, flavor accompanying identified from its products. for each modes are obtained asymmetries distributions proper-time intervals between two decays. The combined...
We report measurements of the branching fractions for B0→π+π−, K+π−, K+K−, and K0π0 B+→π+π0, K+π0, K0π+, K+¯K0, based on 10.4fb−1 data collected Υ(4S) resonance with Belle detector. find B(B0→π+π−)=(0.56+0.23+0.04−0.20−0.05)×10−5, B(B0→K+π−)=(1.93+0.34+0.15−0.32−0.06)×10−5, B(B+→K+π0)=(1.63+0.35+0.16−0.33−0.18)×10−5, B(B+→K0π+)=(1.37+0.57+0.19−0.48−0.18)×10−5, B(B0→K0π0)=(1.60+0.72+0.25−0.59−0.27)×10−5. also set upper limits B0→K+K−, B+→K+¯K0.Received 17 April...
We report the first observation of CP-violating asymmetries in B0 --> pi+pi- decays based on a 140 fb-1 data sample collected at Upsilon(4S) resonance with Belle detector KEKB asymmetric-energy e+e- collider. reconstruct one neutral B meson as CP eigenstate and identify flavor accompanying from its decay products. apply an unbinned maximum likelihood fit to distribution time intervals between two points. The yields asymmetry amplitudes Apipi = +0.58+/-0.15(stat)+/-0.07(syst) Spipi...
A search for additional evidence the rare kaon decay K+-->pi(+)nunu; has been made with a new data set comparable in sensitivity to previous exposure that produced single event. No events were found pion momentum region examined, 211<P<229 MeV/c. Including reanalysis of original set, backgrounds estimated contribute 0.08+/-0.02 events. Based on one observed event, branching ratio is B(K+-->pi(+)nunu;) = 1.5(+3.4)(-1.2)x10(-10).