$\phi$ Meson As a Probe of QCD Equation of State (2009)
Sahoo, Raghunath, Nayak, Tapan K., Alam, Jan-e, Kabana, Sonia, Nandi, Basanta K., Mahapatra, Durga P.
In this work, we extract the QCD Equation of State (EoS) using experimental results of the $\phi$ meson produced in nuclear collisions at AGS, SPS and RHIC energies. The data are confronted to simple...
Study of the Fluctuations of Net-charge and Net-protons Using Higher Order Moments (2009)
Nayak, Tapan K., Collaboration, For The STAR
We present the STAR preliminary results on mid-rapidity and low transverse momentum mean, standard deviation, skewness, and kurtosis of net-charge and net-proton distributions in Au+Au and Cu+Cu...
The QCD Equation of State with Thermal Properties of $\phi$ mesons (2009)
Sahoo, Raghunath, Nayak, Tapan K., Alam, Jan-e, Kabana, Sonia, Nandi, Basanta K., Mahapatra, D P
In this work a first attempt is made to extract the Equation of State (EoS) using experimental results of the $\phi$ meson produced in nuclear collisions at AGS, SPS and RHIC energies. The data are...
Opto-Electronics in Large Array Gas Detector Systems (2008)
Large array gas detector systems are used in particle and nuclear physics experiments involving high-energy nucleon-nucleon and heavy-ion collisions. We have observed that in large array gas detector...
Quark-Gluon Plasma: Present and Future (2008)
We review a sample of the experimental results from AGS to SPS and RHIC and their interpretations towards understanding of the Quark-Gluon Plasma. We discuss extrapolations of these results to the...
Time-Dependent Molecular Memory in Single Voltage-Gated Sodium Channel (2007)
Excitability in neurons is associated with firing of action potentials and requires the opening of voltage-gated sodium channels with membrane depolarization. Sustained membrane depolarization, as...
Overview of event-by-event analysis of high energy nuclear collisions (2007)
The event-by-event analysis of high energy nuclear collisions aims at revealing the richness of the underlying event structures and provide unique measures of dynamical fluctuations associated with...
Proton-proton physics in ALICE (2007)
The ALICE experiment has several unique features which makes it an important contributor to proton-proton physics at the LHC, in addition to its specific design goal of studying the physics of...
Time-Dependent Molecular Memory in Single Voltage-Gated Sodium Channel (2007)
Excitability in neurons is associated with firing of action potentials and requires the opening of voltage-gated sodium channels with membrane depolarization. Sustained membrane depolarization, as...
Event-by-event fluctuations and the QGP phase transition (2006)
Fluctuations of thermodynamic quantities are fundamental to the study of QGP phase transition. Event-by-event fluctuations of many quantities have been studied by dedicated heavy-ion experiments. A...
Opto-Electronics in Large Array Gas Detector Systems (2005)
Majumdar, M. R. Dutta, Das, Debasish, Nayak, Tapan K.
Large array gas detector systems are used in particle and nuclear physics experiments involving high-energy nucleon-nucleon and heavy-ion collisions. We have observed that in large array gas detector...
Das, Debasish, Lin, Guoji, Chattopadhyay, Subhasis, Chikanian, Alexei, Finch, Evan, Nayak, Tapan K, ...
We present the preliminary results on direct photon interferometry measurements in Au+Au collisions at $\sqrt{s_{\rm{NN}}}$ = 62.4 and 200 GeV using the STAR (Solenoidal Tracker at RHIC) detector....
Indication of a Co-Existing Phase of Quarks and Hadrons in Nucleus - Nucleus Collisions (2003)
Mohanty, Bedangadas, Alam, Jan-e, Sarkar, Sourav, Nayak, Tapan K., Nandi, Basanta K.
The variation of average transverse mass of identified hadrons with charge multiplicity have been studied for AGS, SPS and RHIC energies. The observation of a plateau in the average transverse mass...
Evolution of Fluctuation in relativistic heavy-ion collisions (2002)
Mohanty, Bedangadas, Alam, Jan-e, Nayak, Tapan K.
We have studied the time evolution of the fluctuations in the net baryon number for different initial conditions and space time evolution scenarios. We observe that the fluctuations at the freeze-out...
Multiplicity Distributions and Charged-Neutral Fluctuations (2001)
We discuss the importance of event-by-event fluctuations in relativistic heavy-ion collisions. We present results of multiplicity fluctuations of photons and charged particles produced in 158$\cdot...
Photons from Nucleus-Nucleus Collisions at Ultra-Relativistic Energies (2001)
Alam, Jan-e, Hatsuda, T., Nayak, Tapan K., Roy, Pradip, Sarkar, Sourav, Sinha, Bikash
We compare the photon emission rates from hot hadronic matter with in-medium mass shift and Quark Gluon Plasma (QGP). It is observed that the WA98 data can be well reproduced by hadronic initial...
Multiplicity Distributions and Charged-neutral Fluctuations (2001)
Results from the multiplicity distributions of inclusive photons and charged particles, scaling of particle multiplicities, event-by-event multiplicity fluctuations, and charged-neutral fluctuations...
Photons from Pb-Pb Collisions at CERN SPS (2000)
Alam, Jan-e, Sarkar, Sourav, Hatsuda, T., Nayak, Tapan K., Sinha, Bikash
High energy photon emission rate from matter created in Pb + Pb collisions at CERN SPS energies is evaluated. The evolution of matter from the initial state up to freeze-out has been treated within...
Search for DCC in 158A GeV Pb+Pb Collisions (1999)
A detailed analysis of the phase space distributions of charged particles and photons have been carried out using two independent methods. The results indicate the presence of nonstatistical...
Present Status and Future of DCC Analysis (1998)
Disoriented Chiral Condensates (DCC) have been predicted to form in high energy heavy ion collisions where the approximate chiral symmetry of QCD has been restored. This leads to large imbalances in...
Estimating the number of component processes of a superimposed process (1991)
We consider a superposition of an unknown number of independent homogeneous Poisson processes with unknown rates and suppose that when an event occurs, the component process in which it occurred can...
Estimating population size by recapture sampling (1988)
A design called recapture debugging is proposed to get extra information to estimate the original number of faults, N, in a reliability system. The system is observed for a fixed amount of time τ...
Nayak, Tapan K, Gastwirth, Joseph L
This article uses diversity measures based on quadratic entropy to analyze the relative effects of factors such as age, sex, and education on the income distribution. In particular, sex appears to be...
Nayak, Tapan K., Bose, Sudip, Kundu, Subrata
Non-homogeneous Poisson Process (NHPP) models form a significant subclass of the many software reliability models proposed in the literature. We prove an important limitation of NHPP models for which...
This paper presents Pitman closest equivariant estimators of the location of elliptically symmetric distributions. In the scalar parameter case the best estimator is the same for all loss functions...
On estimating the total rate of the unobserved processes
We consider a superposition of an unknown number of independent homogeneous Poisson processes in which the source of each event can be identified. After observing the system for a fixed time t, the...
A note on estimating the number of errors in a system by recapture sampling
Some distributional results related to the recapture debugging experiment of Nayak (1988) for estimating the number of errors, N, in a software are obtained. It is proved that while the sufficient...
Impact of Karl Pearson's Work on Statistical Developments in India
Karl Pearson's work greatly inspired P. C. Mahalanobis's interest in statistics, who was at the centre of modern statistical developments in India. Mahalanobis learned statistics on his own, reading...