Publications (52)
description of collectivity for shell nuclei
A. Saxena, A. Kumar, V. Kumar +2
In the present work, we have reported shell model results for open shell nuclei Ne, Mg and Si isotopes with in -shell model space. We have performed calcula…
Exact Solutions to Einstein-Maxwell theory on Eguchi-Hanson Space
A. M. Ghezelbash, V. Kumar
In this article, we construct explicit analytical exact solutions to the six and higher dimensional Einstein-Maxwell theory. In all solutions, a subspace of the metric is the Eguch…
Pion electroproduction measurements in the nucleon resonance region
R. Li, N. Sparveris, H. Atac +46
We report new pion electroproduction measurements in the resonance, utilizing the SHMS - HMS magnetic spectrometers of Hall C at Jefferson Lab. The data focus on a regio…
Optical-vortex diagnostics via Fraunhofer slit diffraction with controllable wavefront curvature
A. Bekshaev, L. Mikhaylovskaya, S. Patil +2
Far-field slit-diffraction of circular optical-vortex (OV) beams is efficient for measurement of the topological charge (TC) magnitude but does not reveal its sign. We show that th…
Dark Matter Annual Modulation Analysis with Combined Nuclear and Electron Recoil Channels
TEXONO Collaboration, H. B. Li, M. K. Pandey +28
After decades of experimental efforts, the DAMA/LIBRA(DL) annual modulation (AM) analysis on the (WIMP Dark Matter interactions on nucleus) channel remains the only one which…
Gradual pressure-induced change in the magnetic structure of the non-collinear antiferromagnet MnGe
A. S. Sukhanov, Sanjay Singh, L. Caron +9
By means of powder neutron diffraction we investigate changes in the magnetic structure of the coplanar non-collinear antiferromagnet MnGe caused by an application of hydrostat…
Experimentation for Packet Loss on MSP430 and nRF24L01 Based Wireless Sensor Network
S. S. Sonavane, B. P. Patil, V. Kumar
In this paper,a new design of wireless sensor network (WSN)node is discussed which is based on components with ultra low power.We ha e de eloped a Low cost and low power WSN Node u…
Sodium Ion Ordering in NaxCoO2
H. W. Zandbergen, M. L. Foo, Q. Xu +2
The layered sodium cobalt oxide NaxCoO2 is studied by electron diffraction for a wide range of sodium contents, 0.15<x<0.75. An extensive series of ordered Na ion-Na vacancy superl…
Backward-angle Exclusive pi0 Production above the Resonance Region
W. B. Li, G. M. Huber, J. R. Stevens +59
The proposed measurement is a dedicated study of the exclusive electroproduction process,1H(e,e'p)pi0, in the backward-angle regime (u-channel process) above the resonance region.…
Performance testing of gas-tight portable RPC for muography applications
V. Kumar, S. Basnet, E. Cortina Gil +8
This paper reports the latest developmental efforts for a position-sensitive glass-based Resistive Plate Chamber (RPC) and a multi-channel Data AcQuisition (DAQ) system tailored fo…
Pipe Climbing Robot
Abdul Jalal, Ravi Kant, Arjun Kumar +1
This paper presents the plan of an in-pipe climbing robot that works utilizing a novel Three-Output Open Differential(3-OOD) component to navigate complex organizations of lines. C…
Studying the Strangeness -Term in Hall C via Exclusive Electroproduction
H. T. Klest, S. Joosten, H. Szumila-Vance +56
We propose a measurement of exclusive electroproduction of mesons near threshold in Hall C. We will measure the |t|-dependence of the exclusive electroproduction cross se…
Charged kaon and proton multiplicities in semi-inclusive deep-inelastic scattering with 11 GeV electrons
P. Bosted, W. Armstrong, H. Bhatt +67
Measurements of SIDIS multiplicities for charged kaons and protons from proton and deuteron targets are reported on a grid of hadron kinematic variables and …
Numerical and theoretical framework for the DRESDYN precession dynamo experiment
F. Pizzi, A. Giesecke, J. Simkanin +3
The upcoming DRESDYN (DREsden Sodium facility for DYNnamo and thermohydraulic studies) precession experiment will test the possibility to achieve magnetohydrodynamic dynamo action…
Statics and dynamics of phase segregation in multicomponent fermion gas
K. Esfarjani, S. T. Chui, V. Kumar +1
We investigate the statics and dynamics of spatial phase segregation process of a mixture of fermion atoms in a harmonic trap using the density functional theory. The kinetic energ…
Investigation of the Carbon Monoxide Dication Lifetime Using (CO) Dimer Fragmentation
A. Méry, X. Fléchard, S. Guillous +5
The fragmentation of carbon monoxide dimers induced by collisions with low energy Ar ions is investigated using the COLTRIMS technique. The presence of a neighbor molecule i…
Observation of Plasma Focusing of a 28.5 GeV Positron Beam
J. S. T. Ng, P. Chen, H. Baldis +17
The observation of plasma focusing of a 28.5 GeV positron beam is reported. The plasma was formed by ionizing a nitrogen jet only 3 mm thick. Simultaneous focusing in both transver…
Measured proton electromagnetic structure deviates from theoretical predictions
R. Li, N. Sparveris, H. Atac +44
The visible world is founded on the proton, the only composite building block of matter that is stable in nature. Consequently, understanding the formation of matter relies on expl…
Observation of the rare decay from the combined analysis of CMS and LHCb data
The CMS, LHCb Collaborations, : +2807
A joint measurement is presented of the branching fractions and in proton-proton collisions at the LHC by the CMS and LHCb experiments. The data…
Results on Plasma Focusing of High Energy Density Electron and Positron Beams
J. S. T. Ng, P. Chen, W. Craddock +19
We present results from the SLAC E-150 experiment on plasma focusing of high energy density electron and, for the first time, positron beams. We also discuss measurements on plasma…
Flavor, transverse momentum, and azimuthal dependence of charged pion multiplicities in SIDIS with 10.6 GeV electrons
Hall C SIDIS Collaboration, P. Bosted, H. Bhatt +68
Measurements of SIDIS multiplicities for and from proton and deuteron targets are reported on a grid of hadron kinematic variables , , and for lept…
Exact helicoidal and catenoidal solutions in Einstein-Maxwell theory
A. M. Ghezelbash, V. Kumar
We present several new exact solutions in five and higher dimensional Einstein-Maxwell theory by embedding the Nutku instanton. The metric functions for the five-dimensional soluti…
Singlet ground state in the spin- weakly coupled dimer compound NH[(VO)(4,4-)(HPO)(PO)]0.5HO
U. Arjun, V. Kumar, P. K. Anjana +4
We present the synthesis and a detailed investigation of structural and magnetic properties of polycrystalline NH[(VO)(4,4-)(HPO)(PO)$…
Multi-channel lock-in based differential front-end for broadband Raman spectroscopy
A. Ragni, G. Sciortino, M. Sampietro +5
In Broadband Stimulated Raman Spectroscopy, the intrinsic limit given by the laser shot noise is seldom reached due to the electronic noise of the front-end amplifier and the inten…
Dynamo action driven by precessional turbulence
V. Kumar, F. Pizzi, G. Mamatsashvili +3
We reveal and analyze an efficient magnetic dynamo action due to precession-driven hydrodynamic turbulence in the local model of a precessional flow, focusing on the kinematic stag…
boundedness of Fourier multipliers associated with the anharmonic Oscillator
M. Chatzakou, V. Kumar
In this paper we study the - boundedness of the Fourier multipliers in the setting where the underlying Fourier analysis is introduced with respect to the eigenfunctions…
Absence of low-temperature dependence of the decay of 7Be and 198Au in metallic hosts
V. Kumar, M. Hass, Y. Nir-El +2
The electron-capture (EC) decay rate of 7Be in metallic Cu host and the beta-decay rate of 198Au in the host alloy Al-Au have been measured simultaneously at several temperatures,…
Determining the bubble nucleation efficiency of low-energy nuclear recoils in superheated CF dark matter detectors
B. Ali, I. J. Arnquist, D. Baxter +54
The bubble nucleation efficiency of low-energy nuclear recoils in superheated liquids plays a crucial role in interpreting results from direct searches for weakly interacting massi…
Modeling the sea-surface CO of the central Bay of Bengal region using machine learning algorithms
A. P Joshi, V. Kumar, H. V Warrior
The present study explores the capabilities of advanced machine learning algorithms in predicting the sea-surface CO in the open oceans of the Bay of Bengal (BoB). We collec…
The SHMS 11 GeV/c Spectrometer in Hall C at Jefferson Lab
S. Ali, A. Ahmidouch, G. R. Ambrose +72
The Super High Momentum Spectrometer (SHMS) has been built for Hall C at the Thomas Jefferson National Accelerator Facility (Jefferson Lab). With a momentum capability reaching 11…
Results on photon-mediated dark matter-nucleus interactions from the PICO-60 CF bubble chamber
B. Ali, I. J. Arnquist, D. Baxter +52
Many compelling models predict dark matter coupling to the electromagnetic current through higher multipole interactions, while remaining electrically neutral. Different multipole…
Record-Based Transmuted Generalized Linear Exponential Distribution with Increasing, Decreasing and Bathtub Shaped Failure Rates
M. Arshad, M. Khetan, V. Kumar +1
The linear exponential distribution is a generalization of the exponential and Rayleigh distributions. This distribution is one of the best models to fit data with increasing failu…
Quasielastic Asymmetry in the Threshold Region
M. Nycz, W. Armstrong, T. Averett +97
A measurement of the double-spin asymmetry from electron-He scattering in the threshold region of two- and three-body breakup of He was performed at Jefferson Lab, for…
Optical Cages
V. Kumar, J. P. Walker, H. Grebel
We examine array of metal-mesh frameworks for their wide-band absorption. These take the form of quasi-crystal optical cages. An array of cages tends to focus the incoming radiatio…
Flavor Dependence of Charged Pion Fragmentation Functions
H. Bhatt, P. Bosted, S. Jia +67
We have measured the flavor dependence of multiplicities for pi^+ and pi^- production in semi-inclusive deep-inelastic scattering (SIDIS) on proton and deuteron targets to explore…
Development and Performance Analysis of Glass-Based Gas-Tight RPCs for Muography Applications
S. Ikram, S. Basnet, E. Cortina Gil +10
To achieve high-resolution muography of compact targets in scenarios with complex logistical constraints, we are developing a portable muon detector system utilizing glass Resistiv…
Interplay of topology and antiferromagnetic order in two-dimensional van der Waals crystals of (NixFe1-x)2P2S6
N. Khan, D. Kumar, V. Kumar +6
Mermin-Wagner theorem forbid spontaneous symmetry breaking of spins in one/two-dimensional systems at finite temperature and rules out the stabilization of this ordered state. Howe…
Magnetic properties of S = 5/2 anisotropic triangular chain Bi3FeMo2O12
K. Boya, K. Nam, A. K. Manna +12
Competing magnetic interactions in low-dimensional quantum magnets can lead to the exotic ground state with fractionalized excitations. Herein, we present our results on an S = 5/2…
Exploring stellar activity in a sample of active M dwarfs
A. S. Rajpurohit, V. Kumar, K. Srivastava Mudit +3
Most M dwarfs show higher chromospheric activity, often exceeding solar levels. Characterizing stellar activity is essential, particularly since these stars are prime targets in th…
Probing hard/soft factorization via beam-spin asymmetry in exclusive pion electroproduction from the proton
Alicia C. Postuma, Garth M. Huber, D. J. Gaskell +76
Deep exclusive meson production (DEMP) reactions, such as , provide opportunities to study the three-dimensional structure of the nucleon through differential c…
Long-range magnetic order in CePdAl enabled by orthorhombic deformation
M. Stekiel, P. Äermák, C. Franz +13
We investigate the effect of structural deformation on the magnetic properties of orthorhombic CePdAl in relation to its tetragonal polymorph. Utilizing x-ray and neutron diffr…
Coulomb explosion imaging of carbon monoxide dimers
A. Méry, V. Kumar, X. Fléchard +6
We report on experimental results obtained from collisions of slow highly charged Ar9+ ions with a carbon monoxide dimer (CO)2 target. A COLTRIMS setup and a Coulomb explosion imag…
A Preshower Photon Multiplicity Detector for the WA98 Experiment
M. M. Aggarwal, A. Agnihotri, Z. Ahammed +30
A high granularity preshower detector has been fabricated and installed in the WA98 Experiment at the CERN SPS for measuring the spatial distribution of photons produced in the for…
The Flare-Activity of 2MASSJ16111534-1757214 in the Upper Scorpius association
E. W. Guenther, D. Woeckel, P. Chaturvedi +3
Flares are known to play an important role for the evolution of the atmospheres of young planets. In order to understand the evolution of planets, it is thus important to study the…
Collectivity in the light radon nuclei measured directly via Coulomb excitation
L. P. Gaffney, A. P. Robinson, D. G. Jenkins +49
Background: Shape coexistence in heavy nuclei poses a strong challenge to state-of-the-art nuclear models, where several competing shape minima are found close to the ground state.…
Search for inelastic dark matter-nucleus scattering with the PICO-60 CFI and CF bubble chambers
E. Adams, B. Ali, I. J. Arnquist +52
PICO bubble chambers have exceptional sensitivity to inelastic dark matter-nucleus interactions due to a combination of their extended nuclear recoil energy detection window from a…
Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab
A. Accardi, P. Achenbach, D. Adhikari +441
This document presents the initial scientific case for upgrading the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab (JLab) to 22 GeV. It is the result of a…
The effect of nutation angle on the flow inside a precessing cylinder and its dynamo action
V. Kumar, F. Pizzi, A. Giesecke +4
The effect of the nutation angle on the flow inside a precessing cylinder is experimentally explored and compared with numerical simulations. The focus is laid on the typical break…
New Limits on Coherent Neutrino Nucleus Elastic Scattering Cross Section at the Kuo-Sheng Reactor Neutrino Laboratory
TEXONO Collaboration, S. Karmakar, M. K. Singh +25
Neutrino nucleus elastic scattering (νAel) with reactor neutrinos is an interaction under full quantum-mechanical coherence. It has not yet been experimentally observed. We presen…
First result from tetrafluoroethane (CHF) superheated emulsion detector for dark matter search at JUSL
V. Kumar, S. Ali, M. Das +6
The superheated emulsion detector consisting of the droplets of tetra-fluoroethane (C2HCHF2F4) has been fabricated at the laboratory and installed at the 555m deep unde…
Anisotropic fractal magnetic domain pattern in bulk MnPtSn
A. S. Sukhanov, B. E. Zuniga Cespedes, P. Vir +9
The tetragonal compound MnPtSn with the symmetry recently attracted attention as the first known material that hosts magnetic antiskyrmions, which differ from the…
Components of the dilepton continuum in Pb+Pb collisions at TeV
V. Kumar, P. Shukla, R. Vogt
The dilepton invariant mass spectrum measured in heavy-ion collisions includes contributions from important QGP probes such as thermal radiation and the quarkonium (, a…