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Pramana – journal of

CONTENTS – VOLUME 54

(January–June 2000)

Number 1

Special Issue on Physics

Preface ...... 1

Neutrino mass and oscillation: An introductory review ...... DPRoy 3 Transmission of through matter ...... L Wolfenstein 21

Solar neutrino problem in light of super-Kamiokande data ...... S Uma Sankar 27

Neutrino oscillations: Recent results and future directions ...... 35 Parametric resonance in neutrino oscillations in matter ...... EKhAkhmedov 47

Neutrino anomalies without oscillations ...... Sandip Pakvasa 65

Determination of cosmological parameters: An introduction for non-specialists ...... Palash B Pal 79

Cosmic microwave background anisotropy constraints on relict neutrinos ...... Subhendra Mohanty 93

Models of neutrino masses and baryogenesis ...... Utpal Sarkar 101 Neutrino spectrum from theory and experiments ...... Anjan S Joshipura 119

Neutrino masses from SUSY: Different contributions and their implications ...... Sudhir K Vempati 133

Neutrino mass patterns, Ê -parity violating and associated phe- nomenology...... 147

Constraintsonthreeflavorneutrinomixing ...... Mohan Narayan 155

Supernova constraints on neutrino mass and mixing ...... Srubabati Goswami 173 Variables for probing neutrino oscillation at super-Kamiokande and the Sudbury NeutrinoObservatory...... Debasish Majumdar 185

i ii Contents

Introduction to a field-theoretical treatment of neutrino oscillations ...... P Stockinger 203

Number 2 Research Articles

Static charged spheres with anisotropic pressure in general relativity ......

...... J Krishna Rao, M Annapurna and M M Trivedi 215

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c ½ b decay in the heavy quark effective theory ...... R Mohanta and A K Giri 227

Renormalization of seesaw neutrino masses in the standard model with two-Higgs doublets ...... N Nimai Singh and S Biramani Singh 235

Skyrme–Hartree–Fock approach to the change of level occupancy of low mass halonuclei...... Rupayan Bhattacharya 247 Estimation of light transport parameters in biological media using coherent backscattering...... S Anantha Ramakrishna and K Divakara Rao 255

A comparison of the intensity contours of fringes due to multiple reflection and spatialholeburninginsemiclassicaltheoryoflaser ...... Rita Moni Borah and G D Baruah 269

Nonlinear wave propagation through a ferromagnet with damping in (2 ·1) di- mensions...... S G Bindu and V C Kuriakose 275

Correlation between deformation bleaching and mechanoluminescence in colouredalkalihalidecrystals...... B P Chandra, M Ramrakhiani, P Sahu and A M Rastogi 287

Phonon frequency shift and effect of correlation on the electron–phonon interac- tioninheavyfermionsystems ...... B Ojha, P Nayak and S N Behera 305

Role of vanadium in Bi-2223 ceramics ...... D R Mishra, S V Sharma and R G Sharma 317

Rapid Communication A simpler and elegant algorithm for computing fractal dimension in higher di- mensionalstatespace...... S Ghorui, A K Das and N Venkatramani L331

Number 3 Research Articles

Coupled and electromagnetic field in cylindrically symmetric spacetime ...... A Banerjee, S Chatterjee and Tanwi Ghosh 337 Contents iii

Parity of the band head at 3710 keV in 99 Rh using clover detector as Compton polarimeter ...... R Palit, H C Jain, P K Joshi, S Nagaraj, B V T Rao,

S N Chintalapudi and S S Ghugre 347

½6 ½65

Incomplete fusion reactions in O· Ho...... Anil Sharma, B Bindu Kumar, S Mukherjee, S Chakrabarty, B S Tomar, A Goswami, G K Gubbi, S B Manohar, A K Sinha and S K Datta 355

Onsomeproblemsofthemaximumentropyansatz ......

...... K Bandyopadhyay, K Bhattacharyya and A K Bhattacharya 365 ½ Transition probabilities for two-photon H(1s–2s)andHe(1½ s–2 s) transitions: A partial-closureapproach...... Monika Bassi and K L Baluja 377 Tunneling through a time-dependent barrier – a numerical study ...... Pranab Sarkar 385

Dynamics of two coupled chaotic multimode Nd:YAG lasers with intracavity fre- quency doubling crystal ...... Thomas Kuruvilla and V M Nandakumaran 393

Pump induced normal mode splittings in phase conjugation in a Kerr nonlinear waveguide...... S Dutta Gupta 403 Random matrix model for disordered conductors ......

...... Zafar Ahmed and Sudhir R Jain 413

¿ 6:¾ Bilayer exchange coupling and Neel temperature of YBa ¾ Cu O ......

...... Govind, A Pratap, Ajay and R S Tripathi 423 ¾ Optical properties of 1T and 2H phases of TaS ¾ and TaSe ...... Sangeeta Sharma, S Auluck and M A Khan 431 Brief Reports

OnHamiltonianformulationofcosmologies...... K D Krori and S Dutta 441

Absorption characteristics of bacteriorhodopsin molecules ...... H K T Kumar and K Appaji Gowda 447

Number 4

Special Issue: Proceedings of the XIII DAE Symposium on High Energy Physics

Foreword ...... 453

Recent results from LEP ...... AGurtu 455

Baryogenesis ...... U A Yajnik 471 iv Contents

Recent advances in lattice gauge theories ...... RVGavai 487

Higgs and SUSY searches at future colliders ...... Rohini M Godbole 499 physics program: Compact muon solenoid experiment ...... J B Singh 519

Review of recent results in deep inelastic scattering ...... D Indumathi 533

Understandingfieldsusingstrings:Areview...... 543 Quarkgluonplasma ...... C P Singh 561

Electromagnetic signals of quark gluon plasma ...... Bikash Sinha 573

Recent results from CERN SPS experiments and the future heavy ion programme ...... YPViyogi 589 Three flavour oscillation interpretation of neutrino data ...... S Uma Sankar 603

Thesolarneutrinoproblem...... Harrison B Prosper 611

Electroweak couplings of the  lepton...... John Swain 623

Anoverviewofprogressinstringtheory...... Jnanadeva Maharana 629 Supersymmetric unification in the light of neutrino mass ...... Charanjit S Aulakh 639

Recent developments in high energy physics ...... S N Ganguli 661

List of Participants ...... 679

Number 5 Review Articles

Pressure induced phase transition behaviour in f -electron based dialuminides ...... P Ch Sahu and N V Chandra Shekar 685

Research Articles Quantumkeydistributionusingthreebasisstates ...... Subhash Kak 709

Collapse of a charged radiating star with shear . . . S D Maharaj and M Govender 715

Particle production in higher derivative theory ...... G P Singh, A Beesham and R V Deshpande 729 Bulk viscosity of strange quark matter in density dependent quark mass model ...... J D Anand, N Chandrika Devi, V K Gupta and S Singh 737 Contents v

Bubbling and bistability in two parameter discrete systems ...... G Ambika and N V Sujatha 751

Unstable plasma characteristics in mirror field electron cyclotron resonance mi- crowaveionsource ...... S K Angra, Parshant Kumar, R R Dongaonkar and R P Bajpai 763

Coherent structures in presence of dust charge fluctuations ...... M Kakati and K S Goswami 771 Impact of electron irradiation on particle track etching response in polyallyl digly- col carbonate (PADC) ...... R Mishra, S P Tripathy, A Kulshrestha, A Srivastava, S Ghosh, K K Dwivedi, D T Khathing, M M uller¨ and D Fink 777 Possible lattice formation of new materials within a piezoelectric semiconductor plasma ...... M Salimullah, S Ghosh and M R Amin 785

Number 6

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e e ! ØØ Effect of anomalous ØbÏ vertex on decay-lepton distributions in and CP-violatingasymmetries ...... Saurabh D Rindani 791

Structureinformationfromfusionbarriers ...... S V S Sastry and S Santra 813

Effect of polarization on population transfer in H ¾ by stimulated Raman transition withpartiallyoverlappinglaserpulses ...... Swaralipi Ghosh, Sanjay Sen, S S Bhattacharyya and Samir Saha 827

Computer simulation of proton channelling in silicon ...... N K Deepak, K Rajasekharan and K Neelakandan 845

Supercooling across first-order phase transitions in vortex matter ...... P Chaddah and S B Roy 857

Multifractal behaviour of Ò-simplex lattice ...... Sanjay Kumar, D Giri and Sujata Krishna 863

On Mossbauer dynamics in Nb ¿ Sn ...... Ashok Razdan 871 Growth morphology of zinc tris(thiourea) sulphate crystals ...... Sunil Verma, M K Singh, V K Wadhawan and C H Suresh 879

Subject Index ...... 889

Author Index ...... 895