K. Lalwani
A5076095764- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Nuclear physics research studies
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Particle Accelerators and Free-Electron Lasers
- Black Holes and Theoretical Physics
- Superconducting Materials and Applications
- Neutrino Physics Research
- Medical Imaging Techniques and Applications
- Quantum, superfluid, helium dynamics
- CCD and CMOS Imaging Sensors
- Radiation Effects in Electronics
- Distributed and Parallel Computing Systems
- Nuclear Physics and Applications
- Scientific Computing and Data Management
- Electron and X-Ray Spectroscopy Techniques
- Radiation Therapy and Dosimetry
- Atomic and Subatomic Physics Research
- advanced mathematical theories
- Cardiac, Anesthesia and Surgical Outcomes
- Advanced Adaptive Filtering Techniques
Université de Strasbourg
2022-2024
Centre National de la Recherche Scientifique
2022-2024
Malaviya National Institute of Technology Jaipur
2016-2024
Institute of Nuclear Physics, Polish Academy of Sciences
2019-2023
High Energy Accelerator Research Organization
2023
Panjab University
2023
Institute of High Energy Physics
2022
Campbell Collaboration
2022
Duke University
2022
University of Bonn
2022
We report on an exclusive and kinematically complete high-statistics measurement of the basic double-pionic fusion reaction pn→dπ(0)π(0) over full energy region ABC effect, a pronounced low-mass enhancement in ππ-invariant mass spectrum. The measurements, which cover also transition to conventional t-channel ΔΔ process, were performed with upgraded WASA detector setup at COSY. data reveal Abashian-Booth-Crowe effect be uniquely correlated Lorentzian dependence integral cross section....
Exclusive and kinematically complete high-statistics measurements of quasifree polarized $\stackrel{\ensuremath{\rightarrow}}{n}p$ scattering have been performed in the energy region narrow resonancelike structure ${d}^{*}$ with $I({J}^{P})=0({3}^{+})$, $M\ensuremath{\approx}2380\text{ }\text{ }\mathrm{MeV}$, $\mathrm{\ensuremath{\Gamma}}\ensuremath{\approx}70\text{ }\mathrm{MeV}$ observed recently double-pionic fusion channels...
Exclusive measurements of the quasifree $pn\ensuremath{\rightarrow}pp{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{\ensuremath{-}}$ reaction have been performed by means $pd$ collisions at ${T}_{p}$ $=$ 1.2 GeV using wide angle shower apparatus (WASA) detector setup cooler synchrotron COSY (Institut f\"ur Kernphysik, J\"ulich). Total and differential cross sections obtained covering energy region $\sqrt{s}$ (2.35--2.46) GeV, which includes ABC effect its associated resonance structure. No...
New data on quasifree polarized neutron-proton scattering in the region of recently observed ${d}^{*}$ resonance structure are obtained by exclusive and kinematically complete high-statistics measurements with WASA at COSY. This paper details determination beam polarization, checks character process, all ${A}_{y}$ angular distributions new partial-wave analysis, which includes producing a pole ${}^{3}{D}_{3}\ensuremath{-}{}^{3}{G}_{3}$ coupled partial waves...
Exclusive measurements of the quasi-free $np \to np\pi^0\pi^0$ reaction have been performed by means $dp$ collisions at $T_d$ = 2.27 GeV using WASA detector setup COSY. Total and differential cross sections obtained covering energy region $\sqrt s$ (2.35 - 2.46) GeV, which includes ABC effect its associated $d^*(2380)$ resonance. Adding $d^*$ resonance amplitude to that for conventional processes leads a reasonable description data. The observed in total section is agreement with predictions...
Abstract The Silicon Vertex Detector of Belle II is a state-of-the-art tracking and vertexing system based on double-sided silicon strip sensors, designed fabricated by large international collaboration in the period 2012–2018. Since 2019 it has been operation providing high quality data with small number defective channels (<1%), hit-finding efficiency (>99%), good signal-to-noise ratio (well excess 10 for all sensor configurations tracks). Together control over alignment, these are...
An exclusive measurement of the excitation function for dd->3Heppi- reaction was performed at Cooler Synchrotron COSY-Juelich with WASA-at-COSY detection system. The data were taken during a slow acceleration beam from 2.185 GeV/c to 2.400 crossing kinematic threshold eta meson production in dd->4He-eta 2.336 GeV/c. corresponding excess energy respect 4He-eta system varied -51.4MeV 22MeV. integrated luminosity experiment determined using dd->3Hen reaction. shape examined. No signal bound...
<title>Abstract</title> The objective of this research is to present the development an embedded system estimate Direction-of-Arrival (DoA) impulsive acoustic signals using TDOA estimation methodology; achieve this, microphones will be employed capture from environment. A thorough study different methods conducted identify effective algorithms and techniques for DoA estimation. Subsequently, algorithm code developed specifically microcontroller, ensuring efficient processing within system....
We report on a high-statistics measurement of the most basic double pionic fusion reaction $\vec{n}p \to d\pi^0\pi^0$ over energy region $d^*(2380)$ resonance by use polarized deuteron beam and observing in quasifree scattering mode. The measurements were performed with WASA detector setup at COSY. data reveal substantial analyzing powers confirm conclusions about $d^*$ obtained from unpolarized measurements. also previous under complementary kinematic conditions.
We report the result for a search leptonic decay of B+→μ+νμ using full Belle dataset 711 fb−1 integrated luminosity at Υ(4S) resonance. In Standard Model B-meson decays are helicity and Cabibbo-Kobayashi-Maskawa suppressed. To maximize sensitivity an inclusive tagging approach is used to reconstruct second B meson produced in collision. The directional information from this boost observed μ into signal rest frame, which has monochromatic momentum spectrum. Though its smeared by experimental...
Using data samples of 89.5 and $711\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ recorded at energies $\sqrt{s}=10.52$ 10.58 GeV, respectively, with the Belle detector KEKB ${e}^{+}{e}^{\ensuremath{-}}$ collider, we report measurements branching fractions semileptonic decays ${\mathrm{\ensuremath{\Xi}}}_{c}^{0}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Xi}}}^{\ensuremath{-}}{\ensuremath{\ell}}^{+}{\ensuremath{\nu}}_{\ensuremath{\ell}}$ ($\ensuremath{\ell}=e$ or $\ensuremath{\mu}$)...
We present the first measurements of absolute branching fractions $\Xi_c^+$ decays into $\Xi^- \pi^+ \pi^+$ and $p K^- final states. Our analysis is based on a data set $(772\pm 11)\times 10^{6}$ $B\bar{B}$ pairs collected at $\Upsilon(4S)$ resonance with Belle detector KEKB $e^+e^-$ collider. measure fraction $\bar{B}^{0} \to \bar{\Lambda}_{c}^{-} \Xi_{c}^{+}$ recoiling against $\bar{\Lambda}_c^-$ in $\bar{B}^0$ resulting ${\cal B}(\bar{B}^{0} \Xi_{c}^{+}) = [1.16 \pm 0.42(\rm stat.)...
Using a data sample of $921.9\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected with the Belle detector, we study process ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{D}_{s}^{+}{D}_{s1}(2536{)}^{\ensuremath{-}}+\mathrm{c}.\mathrm{c}.$ via initial-state radiation. We report first observation vector charmoniumlike state decaying to ${D}_{s}^{+}{D}_{s1}(2536{)}^{\ensuremath{-}}+\mathrm{c}.\mathrm{c}.$ significance $5.9\ensuremath{\sigma}$, including systematic uncertainties. The...
Using 980 fb−1 of data at and around the ϒ(nS) (n=1, 2, 3, 4, 5) resonances collected with Belle detector KEKB asymmetric-energy e+e− collider, two-photon process γγ→γψ(2S) is studied from threshold to 4.2 GeV for first time. Two structures are seen in invariant mass distribution γψ(2S): one MR1=3922.4±6.5±2.0 MeV/c2 a width ΓR1=22±17±4 MeV, another MR2=4014.3±4.0±1.5 ΓR2=4±11±6 MeV; signals parametrized incoherent sum two Breit-Wigner functions. The structure consistent X(3915) or...
Exclusive and kinematically complete measurements of the double pionic fusion to ${}^{3}\mathrm{He}$ have been performed in energy region so-called ABC effect, which denotes a pronounced low-mass enhancement $\ensuremath{\pi}\ensuremath{\pi}$-invariant mass spectrum. The experiments were carried out with WASA detector setup at COSY (the cooler synchrotron Forschungszentrum J\"ulich). Similar observations basic $pn\ensuremath{\rightarrow}d{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ reaction...
Exclusive measurements of the quasi-free pn→ppπ− and pp→ppπ0 reactions have been performed by means pd collisions at Tp=1.2 GeV using WASA detector setup COSY. Total differential cross sections obtained covering energy region Tp=0.95–1.3GeV (s=2.3–2.46 GeV), which includes regions Δ(1232), ⁎N⁎(1440) ⁎d⁎(2380) resonance excitations. From these isoscalar single-pion production has extracted, for data existed so far only below Tp=1 GeV. We observe a substantial increase this section around 1...
We report measurements of the production cross sections charged pions, kaons, and protons as a function fractional energy, event-shape variable called thrust, transverse momentum with respect to thrust axis. These access momenta created in fragmentation process, which are critical importance understanding any transverse-momentum-dependent distribution functions. The low transverse-momentum part can be well described by Gaussians is generally assumed but fractional-energy dependence...
We report the first evidence for $X(3872)$ production in two-photon interactions by tagging either electron or positron final state, exploring highly virtual photon region. The search is performed ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{e}^{+}{e}^{\ensuremath{-}}J/\ensuremath{\psi}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$, using $825\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data collected Belle detector operated at KEKB ${e}^{+}{e}^{\ensuremath{-}}$...
Exclusive and kinematically complete high-statistics measurements of the double pionic fusion reaction $dd \to ^4$He$\pi^0\pi^0$ have been performed in energy range 0.8 - 1.4 GeV covering thus region ABC effect, which denotes a pronounced low-mass enhancement $\pi\pi$-invariant mass spectrum. The experiments were carried out with WASA detector setup at COSY. Similar to observation basic $pn d \pi^0\pi^0$ reaction, data reveal correlation between effect resonance-like dependence total cross...