Publications (43)
Correlation of exchange bias with magneto-structural effects across the compensation temperature of Co(CrFe)O (x = 0.05 and 0.075)
Ram Kumar, R. Padam, S. Rayaprol +2
A small amount of Fe (5% and 7.5%) substitution in the Cr-site of the multiferroic compound CoCr2O4 leads to a magnetization reversal. In these compounds, we report a sign change i…
Measurement of and in , Au, and CuCu collisions at GeV
A. Adare, S. Afanasiev, C. Aidala +587
The PHENIX experiment at the Relativistic Heavy Ion Collider has performed a systematic study of and meson production at midrapidity in , Au, and Cu…
Systematic Study of Azimuthal Anisotropy in CuCu and AuAu Collisions at and 200 GeV
A. Adare, S. Afanasiev, C. Aidala +421
We have studied the dependence of azimuthal anisotropy for inclusive and identified charged hadrons in AuAu and CuCu collisions on collision energy, species, and centra…
Controlling the rain fall statistics using Mean-Reverting Jump Diffusion model
Joya GhoshDastider, D. Pal, Pankaj Kumar Mishra
We present a stochastic mean-reverting jump-diffusion model to simulate rainfall time series and validate it using long-term half-hourly rain fall data from the North-East region o…
Scaling properties of fractional momentum loss of high-pT hadrons in nucleus-nucleus collisions at from 62.4 GeV to 2.76 TeV
A. Adare, S. Afanasiev, C. Aidala +627
Measurements of the fractional momentum loss () of high-transverse-momentum-identified hadrons in heavy ion collisions are presented. Using in A…
Disordered Type-II Superconductors: A Universal Phase Diagram for Low-T Systems
S. S. Banerjee, A. K. Grover, M. J. Higgins +9
A universal phase diagram for weakly pinned low-T type-II superconductors is revisited and extended with new proposals. The low-temperature ``Bragg glass'' phase is argued to t…
Comparison of History Effects in Magnetization in Weakly pinned Crystals of high- and low-T Superconductors
D. Pal, S. Sarkar, A. Tulapurkar +8
A comparison of the history effects in weakly pinned single crystals of a high YBaCuO (for H c) and a low CaRhSn, which sh…
Transverse-energy distributions at midrapidity in , Au, and AuAu collisions at --200~GeV and implications for particle-production models
S. S. Adler, S. Afanasiev, C. Aidala +388
Measurements of the midrapidity transverse energy distribution, $d\Et/dη$, are presented for , Au, and AuAu collisions at GeV and addition…
Event Structure and Double Helicity Asymmetry in Jet Production from Polarized p+p Collisions at sqrt(s) = 200 GeV
A. Adare, S. Afanasiev, C. Aidala +372
We report on event structure and double helicity asymmetry () of jet production in longitudinally polarized p+p collisions at =200 GeV. Photons and charged particle…
Low-momentum direct photon measurement in CuCu collisions at GeV
A. Adare, S. Afanasiev, C. Aidala +447
We have measured direct photons for GeV/ in minimum bias and 0\%--40\% most central events at midrapidity for CuCu collisions at GeV. The $e^{+…
Rapidity dependence of deuteron production in Au+Au collisions at = 200 GeV
BRAHMS Collaboration, I. Arsene, I. G. Bearden +42
We have measured the distributions of protons and deuterons produced in high energy heavy ion Au+Au collisions at RHIC over a very wide range of transverse and longitudinal momentu…
Measuring the Penetration Depth Anisotropy in MgB using Small-Angle Neutron Scattering
D. Pal, L. DeBeer-Schmitt, T. Bera +7
Using small-angle neutron scattering we have measured the misalignment between an applied field of 4 kOe and the flux-line lattice in MgB, as the field is rotated away from the…
Beam-energy and system-size dependence of the space-time extent of the pion emission source produced in heavy ion collisions
A. Adare, S. Afanasiev, C. Aidala +619
Two-pion interferometry measurements are used to extract the Gaussian radii , , and , of the pion emission sources produced in CuCu and…
Pairing in High Temperature Superconductors and Berry Phase
D. Pal, B. Basu
The topological approach to the understanding of pairing mechanism in high superconductors analyses the relevance of the Berry phase factor in this context. This also gives t…
Manifestation of modulation in spatial order of flux line lattice in weakly pinned superconductors : a vibrating sample magnetometer study
A. D. Thakur, D. Pal, M. J. Higgins +2
We have investigated the healing of transient disordered vortex states injected into a superconducting sample during the field ramping process in isothermal M-H measurements as a p…
Medium modification of jet fragmentation in Au+Au collisions at sqrt(s_NN)=200 GeV measured in direct photon-hadron correlations
A. Adare, S. Afanasiev, C. Aidala +559
The jet fragmentation function is measured with direct photon-hadron correlations in p+p and Au+Au collisions at sqrt(s_NN)=200 GeV. The p_T of the photon is an excellent approxima…
System-size dependence of open-heavy-flavor production in nucleus-nucleus collisions at =200 GeV
A. Adare, S. Afanasiev, C. Aidala +377
The PHENIX Collaboration at the Relativistic Heavy Ion Collider has measured open heavy flavor production in CuCu collisions at =200 GeV through the measuremen…
Flux jumps, Second Magnetization Peak anomaly and the Peak Effect phenomenon in single crystals of and
D. Jaiswal-Nagar, A. D. Thakur, S. Ramakrishnan +3
We present magnetization measurements in single crystals of the tetragonal compound, which exhibit the phenomenon of peak effect as well as the second magnetization pea…
Vortex Phase Diagram of weakly pinned YBaCuO for H c
D. Pal, S. Ramakrishnan, A. K. Grover +2
Vortex phase diagram in a weakly pinned crystal of YBCO for H c is reviewed in the light of a recent elucidation of the process of `inverse melting' in a Bismuth cuprat…
High p_T Direct Photon and pi^0 Triggered Azimuthal Jet Correlations in sqrt(s)=200 GeV p+p Collisions
A. Adare, S. Afanasiev, C. Aidala +428
Correlations of charged hadrons of 1 < pT < 10 GeV/c with high pT direct photons and pi^ 0 mesons in the range 5 <pT < 15 GeV/c are used to study jet fragmentation in the photon+je…
Peak Effect in CaRhSn : Vortex Phase Diagram and Evidences for Stepwise Amorphization of Flux Line Lattice
S. Sarkar, D. Pal, S. S. Banerjee +9
The Peak Effect (PE) regime in a single crystal of CaRhSn has been investigated in detail via ac susceptibility as well as dc magnetization measurements. The PE regi…
Evidence of Kolmogorov like scalings and multifractality in the rainfall events
Joya GhoshDastider, D. Pal, Pankaj K. Mishra
In this paper we present a detailed statistical analysis related to the characterization of the spatial and temporal fluctuations present in the rainfall patterns of North-East reg…
Measurements of elliptic and triangular flow in high-multiplicity HeAu collisions at GeV
A. Adare, S. Afanasiev, C. Aidala +627
We present the first measurement of elliptic () and triangular () flow in high-multiplicity HeAu collisions at GeV. Two-particle correlati…
Measurement of Direct Photons in Au+Au Collisions at sqrt(s_NN) = 200 GeV
S. Afanasiev, C. Aidala, N. N. Ajitanand +343
We report the measurement of direct photons at midrapidity in Au+Au collisions at sqrt{s_NN} = 200 GeV. The direct photon signal was extracted for the transverse-momentum range of…
Cross section and double helicity asymmetry for eta mesons and their comparison to neutral pion production in p+p collisions at sqrt(s)=200 GeV
A. Adare, S. Afanasiev, C. Aidala +429
Measurements of double-helicity asymmetries for inclusive hadron production in polarized p+p collisions are sensitive to helicity--dependent parton distribution functions, in parti…
Rapidity and centrality dependence of particle production for identified hadrons in Cu+Cu collisions at GeV
BRAHMS Collaboration, I. C. Arsene, I. G. Bearden +41
The BRAHMS collaboration has measured transverse momentum spectra of pions, kaons, protons and antiprotons at rapidities 0 and 3 for Cu+Cu collisions at GeV.…
Nuclear modification factors of phi mesons in d+Au, Cu+Cu and Au+Au collisions at sqrt(S_NN)=200 GeV
PHENIX Collaboration, A. Adare, S. Afanasiev +529
The PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) has performed systematic measurements of phi meson production in the K+K- decay channel at midrapidity in p+p, d…
Magnetic field induced orientation of superconducting MgB crystallites determined by X-ray diffraction
J. Li, D. Vaknin, S. L. Bud'ko +5
X-ray diffraction studies of fine polycrystalline samples of MgB in the superconducting state reveal that crystals orient with their \emph{c}-axis in a plane normal to the dire…
Production of omega mesons in p+p, d+Au, Cu+Cu, and Au+Au collisions at sqrt(s_NN)=200 GeV
A. Adare, S. Afanasiev, C. Aidala +538
The PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) has measured omega meson production via leptonic and hadronic decay channels in p+p, d+Au, Cu+Cu, and Au+Au coll…
Oblique diffraction geometry for the observation of several non-coplanar Bragg reflections under identical illumination
C. Detlefs, A. Henningsson, B. Kanesalingam +9
We present a method to determine the strain tensor and local lattice rotation with Dark Field X-ray Microscopy. Using a set of at least 3 non-coplanar, symmetry-equivalent Bragg re…
Multiple charge density wave transitions in Lu_{2} Ir_{3} Si_{5} single crystal
N. S. Sangeetha, A. Thamizhavel, C. V. Tomy +4
The physical properties of the single-crystalline samples of Lu_{2} Ir_{3} Si_{5} have been investigated by magnetic susceptibility, resistivity and heat capacity studies. We obser…
Topological Aspects Of Spin Pairing in High Superconductivity and Berry Phase
D. Pal, B. Basu
From topological viewpoint we have analysed the role of Berry phase in spin pairing mechanism of high superconducting state.
Magnus Force in High Temperature Superconductivity and Berry Phase
D. Pal, B. Basu, P. Bandyopadhyay
In the topological framework of high temperature superconductivity we have discussed the Magnus force acting on its vortices.
Measurement of neutral mesons in p+p collisions at sqrt(s) = 200 GeV and scaling properties of hadron production
A. Adare, S. Afanasiev, C. Aidala +428
The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the invariant differential cross section for production of K^0_S , Ï, ηprime, and Ïmesons in p + p coll…
Amorphization of Vortex Matter and Reentrant Peak Effect in YBaCuO
D. Pal, D. Dasgupta, B. K. Sarma +3
The peak effect (PE) has been observed in a twinned crystal of YBaCuO for Hc in the low field range, close to the zero field superconducting transition…
Heavy Quark Production in p+p and Energy Loss and Flow of Heavy Quarks in Au+Au Collisions at sqrt(s_NN)=200 GeV
A. Adare, S. Afanasiev, C. Aidala +420
Transverse momentum (p^e_T) spectra of electrons from semileptonic weak decays of heavy flavor mesons in the range of 0.3 < p^e_T < 9.0 GeV/c have been measured at mid-rapidity (|e…
Identified charged hadron production in p+p collisions at sqrt(s)=200 and 62.4 GeV
A. Adare, S. Afanasiev, C. Aidala +428
Transverse momentum distributions and yields for , , and in collisions at =200 and 62.4 GeV at midrapidity are measured by the PHEN…
Beam-energy and centrality dependence of direct-photon emission from ultra-relativistic heavy-ion collisions
A. Adare, S. Afanasiev, C. Aidala +669
The PHENIX collaboration presents first measurements of low-momentum ( GeV/) direct-photon yields from AuAu collisions at =39 and 62.4 GeV. For b…
Direct photon production in d+Au collisions at sqrt(s_NN)=200 GeV
A. Adare, S. S. Adler, S. Afanasiev +543
Direct photons have been measured in sqrt(s_NN)=200 GeV d+Au collisions at midrapidity. A wide p_T range is covered by measurements of nearly-real virtual photons (1<p_T<6 GeV/c) a…
Transverse energy production and charged-particle multiplicity at midrapidity in various systems from to 200 GeV
A. Adare, S. Afanasiev, C. Aidala +702
Measurements of midrapidity charged particle multiplicity distributions, , and midrapidity transverse-energy distributions, , are presented for a variety…
Topological Aspect of high- Superconductivity, Fractional Quantum Hall Effect and Berry Phase
B. Basu, D. Pal, P. Bandyopadhyay
We have analysed here the equivalence of RVB states with FQH states in terms of the Berry Phase which is associated with the chiral anomaly in 3+1 dimensions. It is observ…
Radiative Energy-Loss of Heavy Quarks in a Quark-Gluon Plasma
M. G. Mustafa, D. Pal, D. K. Srivastava +1
We estimate the radiative energy-loss of heavy quarks, produced from the initial fusion of partons, while propagating in a quark-gluon plasma which may be formed in the wake of rel…
Nuclear-Modification Factor for Open-Heavy-Flavor Production at Forward Rapidity in Cu+Cu Collisions at sqrt(s_NN)=200 GeV
A. Adare, S. Afanasiev, C. Aidala +373
Background: Heavy-flavor production in p+p collisions tests perturbative-quantum-chromodynamics (pQCD) calculations. Modification of heavy-flavor production in heavy-ion collisions…