Uday Sukhatme - Academia.edu (original) (raw)

Papers by Uday Sukhatme

Research paper thumbnail of Exact Consequences of Broken O(4) Symmetry. III. Factorization and Mass Dependence

Phys Rev D, 1971

We use analyticity arguments to obtain the constraints imposed by factorization and broken O(4) s... more We use analyticity arguments to obtain the constraints imposed by factorization and broken O(4) symmetry on Regge daughter sequences coupled to spinless external particles. Our results hold for arbitrary external masses.

Research paper thumbnail of Dual-resonance amplitude for spinning particles

Il Nuovo Cimento A

Summary We obtain a nonoperatorial, dual-resonance amplitude for the scattering of an arbitrary ... more Summary We obtain a nonoperatorial, dual-resonance amplitude for the scattering of an arbitrary number of spinning particles on the mass shell.

Research paper thumbnail of Factorizable dual-resonance models without tachyons

Research paper thumbnail of Дуальная резонансная амплитуда для вращающихся частиц

Research paper thumbnail of Multiperipheral and diffractive components of the total cross section in Gribov's Reggeon calculus

Physical Review D

ABSTRACT

Research paper thumbnail of Obtaining real parts of scattering amplitudes directly from cross section data using derivative analyticity relations

Physics Letters B, 1974

We show that one can obtain real parts of scattering amplitudes by knowing the imaginary parts at... more We show that one can obtain real parts of scattering amplitudes by knowing the imaginary parts at only nearby energies. This is accomplished by re-casting the dispersion integral into an equivalent form which we will call a "derivative analyticity relation"• Predictions are given for forward amplitudes where o T is measured: pp, l~p, K±p, n+-P, 3'P. We deduce the real part of the elastic pp amplitude away #ore the forward direction at ISR energies.

Research paper thumbnail of Exact Consequences of Broken O ( 4 ) Symmetry. III. Factorization and Mass Dependence

Physical Review D, 1971

We use analyticity arguments to obtain the constraints imposed by factorization and broken O(4) s... more We use analyticity arguments to obtain the constraints imposed by factorization and broken O(4) symmetry on Regge daughter sequences coupled to spinless external particles. Our results hold for arbitrary external masses.

Research paper thumbnail of Scattering amplitudes for physical states in dual-resonance models

Recently, D1 V~CCHIA and FUBINI (1) have found operators which have the property of generating on... more Recently, D1 V~CCHIA and FUBINI (1) have found operators which have the property of generating only physical states in the Virasoro case (a = 1). In this note, we use these operators to compute scattering amplitudes for excited external particles. This is an extension of previously derived results for the parent trajectory (2).

Research paper thumbnail of Duality and proton-proton scattering at all angles

Research paper thumbnail of The eccentricity of jet angular distributions: A technique for detecting new quark flavors

Physics Letters B, 1978

ABSTRACT

Research paper thumbnail of Evidence for “held-back” valence quarks from particle ratios in pp and p collisions

Physics Letters B, 1983

ABSTRACT

Research paper thumbnail of A universal curve for meson-nucleon elastic scattering

Physics Letters B, 1972

ABSTRACT

Research paper thumbnail of Consistency of New Meson-Nucleon Elastic Scattering Data with a Previously Conjectured Universal Curve

Physical Review D, 1973

We show that important new large-t pi-p data at pL=13.8 and 22.6 GeV/c are in good agreement with... more We show that important new large-t pi-p data at pL=13.8 and 22.6 GeV/c are in good agreement with a universal curve suggested last year.

Research paper thumbnail of Gribov's reggeon calculus and high-energy elastic proton-proton scattering

Nuclear Physics B, 1973

We demonstrate that the change of slope at t~ -0.1 (GeV/c) 2 and the dip at t~ -1,4 (GeV/e) 2, ob... more We demonstrate that the change of slope at t~ -0.1 (GeV/c) 2 and the dip at t~ -1,4 (GeV/e) 2, observed in the recent ISR proton-proton elastic-scattering data, can both be simultaneously explained within the framework of Gribov's reggeon calculus for the pameron.

Research paper thumbnail of High energy pp data and the reggeon theory of diffraction scattering

Nuclear Physics B, 1974

Recent proton-proton scattering experiments from the CERN ISR show several striking features. The... more Recent proton-proton scattering experiments from the CERN ISR show several striking features. There is strong evidence that the total cross section is rising. The elastic differential cross section shows a break in the forward slope, as well as a pronounced dip-bump structure, with the dip located at t = -1.3 (GeV/c) 2 . We demonstrate that all these features and their energy dependence can be simultaneously and quantitatively very well described within the framework of Gribov reggeon calculus.

Research paper thumbnail of Soft multihadron production from partonic structure and fragmentation functions

Zeitschrift f�r Physik C Particles and Fields, 1980

Abstract. We describe a two-chain model for soft multiparticle production in hadronic collisions.... more Abstract. We describe a two-chain model for soft multiparticle production in hadronic collisions. The model is formulated in a parton framework and is consistent with the dual topological scheme for the Pomeron. The sole inputs are valence quark structure functions in the ...

Research paper thumbnail of A lowP T parton fragmentation model with diffractive resonance production: Thepp?(?�,K �)+X inclusive reactions

Zeitschrift f�r Physik C: Particles and Fields, 1984

It is shown that carefully measured momemtum distributions in the inclusive reactions p p ~ C + X... more It is shown that carefully measured momemtum distributions in the inclusive reactions p p ~ C + X, C = rc +, rc-, K + ; K -can be quantitatively understood in a parton fragmentation approach provided both diquark fragmentation as well as diffractive resonance production and decay are taken into a account.

Research paper thumbnail of Deep inelastic processes with backward hadrons

AIP Conference Proceedings, 1992

ABSTRACT

Research paper thumbnail of Linear Superposition in Nonlinear Equations

Even though the KdV and modified KdV equations are nonlinear, we show that suitable linear combin... more Even though the KdV and modified KdV equations are nonlinear, we show that suitable linear combinations of known periodic solutions involving Jacobi elliptic functions yield a large class of additional solutions. This procedure works by virtue of some remarkable new identities satisfied by the elliptic functions.

Research paper thumbnail of Accuracy of semiclassical methods for shape-invariant potentials

Physical Review a, 1997

We study the accuracy of several alternative semiclassical methods by computing analytically the ... more We study the accuracy of several alternative semiclassical methods by computing analytically the energy levels for many large classes of exactly solvable shape-invariant potentials. For these potentials, the ground-state energies computed via the WKB method typically deviate from the exact results by about 10%, a recently suggested modification, using nonintegral Maslov indices, is substantially better, and the supersymmetric WKB quantization method gives exact answers for all energy levels.

Research paper thumbnail of Exact Consequences of Broken O(4) Symmetry. III. Factorization and Mass Dependence

Phys Rev D, 1971

We use analyticity arguments to obtain the constraints imposed by factorization and broken O(4) s... more We use analyticity arguments to obtain the constraints imposed by factorization and broken O(4) symmetry on Regge daughter sequences coupled to spinless external particles. Our results hold for arbitrary external masses.

Research paper thumbnail of Dual-resonance amplitude for spinning particles

Il Nuovo Cimento A

Summary We obtain a nonoperatorial, dual-resonance amplitude for the scattering of an arbitrary ... more Summary We obtain a nonoperatorial, dual-resonance amplitude for the scattering of an arbitrary number of spinning particles on the mass shell.

Research paper thumbnail of Factorizable dual-resonance models without tachyons

Research paper thumbnail of Дуальная резонансная амплитуда для вращающихся частиц

Research paper thumbnail of Multiperipheral and diffractive components of the total cross section in Gribov's Reggeon calculus

Physical Review D

ABSTRACT

Research paper thumbnail of Obtaining real parts of scattering amplitudes directly from cross section data using derivative analyticity relations

Physics Letters B, 1974

We show that one can obtain real parts of scattering amplitudes by knowing the imaginary parts at... more We show that one can obtain real parts of scattering amplitudes by knowing the imaginary parts at only nearby energies. This is accomplished by re-casting the dispersion integral into an equivalent form which we will call a "derivative analyticity relation"• Predictions are given for forward amplitudes where o T is measured: pp, l~p, K±p, n+-P, 3'P. We deduce the real part of the elastic pp amplitude away #ore the forward direction at ISR energies.

Research paper thumbnail of Exact Consequences of Broken O ( 4 ) Symmetry. III. Factorization and Mass Dependence

Physical Review D, 1971

We use analyticity arguments to obtain the constraints imposed by factorization and broken O(4) s... more We use analyticity arguments to obtain the constraints imposed by factorization and broken O(4) symmetry on Regge daughter sequences coupled to spinless external particles. Our results hold for arbitrary external masses.

Research paper thumbnail of Scattering amplitudes for physical states in dual-resonance models

Recently, D1 V~CCHIA and FUBINI (1) have found operators which have the property of generating on... more Recently, D1 V~CCHIA and FUBINI (1) have found operators which have the property of generating only physical states in the Virasoro case (a = 1). In this note, we use these operators to compute scattering amplitudes for excited external particles. This is an extension of previously derived results for the parent trajectory (2).

Research paper thumbnail of Duality and proton-proton scattering at all angles

Research paper thumbnail of The eccentricity of jet angular distributions: A technique for detecting new quark flavors

Physics Letters B, 1978

ABSTRACT

Research paper thumbnail of Evidence for “held-back” valence quarks from particle ratios in pp and p collisions

Physics Letters B, 1983

ABSTRACT

Research paper thumbnail of A universal curve for meson-nucleon elastic scattering

Physics Letters B, 1972

ABSTRACT

Research paper thumbnail of Consistency of New Meson-Nucleon Elastic Scattering Data with a Previously Conjectured Universal Curve

Physical Review D, 1973

We show that important new large-t pi-p data at pL=13.8 and 22.6 GeV/c are in good agreement with... more We show that important new large-t pi-p data at pL=13.8 and 22.6 GeV/c are in good agreement with a universal curve suggested last year.

Research paper thumbnail of Gribov's reggeon calculus and high-energy elastic proton-proton scattering

Nuclear Physics B, 1973

We demonstrate that the change of slope at t~ -0.1 (GeV/c) 2 and the dip at t~ -1,4 (GeV/e) 2, ob... more We demonstrate that the change of slope at t~ -0.1 (GeV/c) 2 and the dip at t~ -1,4 (GeV/e) 2, observed in the recent ISR proton-proton elastic-scattering data, can both be simultaneously explained within the framework of Gribov's reggeon calculus for the pameron.

Research paper thumbnail of High energy pp data and the reggeon theory of diffraction scattering

Nuclear Physics B, 1974

Recent proton-proton scattering experiments from the CERN ISR show several striking features. The... more Recent proton-proton scattering experiments from the CERN ISR show several striking features. There is strong evidence that the total cross section is rising. The elastic differential cross section shows a break in the forward slope, as well as a pronounced dip-bump structure, with the dip located at t = -1.3 (GeV/c) 2 . We demonstrate that all these features and their energy dependence can be simultaneously and quantitatively very well described within the framework of Gribov reggeon calculus.

Research paper thumbnail of Soft multihadron production from partonic structure and fragmentation functions

Zeitschrift f�r Physik C Particles and Fields, 1980

Abstract. We describe a two-chain model for soft multiparticle production in hadronic collisions.... more Abstract. We describe a two-chain model for soft multiparticle production in hadronic collisions. The model is formulated in a parton framework and is consistent with the dual topological scheme for the Pomeron. The sole inputs are valence quark structure functions in the ...

Research paper thumbnail of A lowP T parton fragmentation model with diffractive resonance production: Thepp?(?�,K �)+X inclusive reactions

Zeitschrift f�r Physik C: Particles and Fields, 1984

It is shown that carefully measured momemtum distributions in the inclusive reactions p p ~ C + X... more It is shown that carefully measured momemtum distributions in the inclusive reactions p p ~ C + X, C = rc +, rc-, K + ; K -can be quantitatively understood in a parton fragmentation approach provided both diquark fragmentation as well as diffractive resonance production and decay are taken into a account.

Research paper thumbnail of Deep inelastic processes with backward hadrons

AIP Conference Proceedings, 1992

ABSTRACT

Research paper thumbnail of Linear Superposition in Nonlinear Equations

Even though the KdV and modified KdV equations are nonlinear, we show that suitable linear combin... more Even though the KdV and modified KdV equations are nonlinear, we show that suitable linear combinations of known periodic solutions involving Jacobi elliptic functions yield a large class of additional solutions. This procedure works by virtue of some remarkable new identities satisfied by the elliptic functions.

Research paper thumbnail of Accuracy of semiclassical methods for shape-invariant potentials

Physical Review a, 1997

We study the accuracy of several alternative semiclassical methods by computing analytically the ... more We study the accuracy of several alternative semiclassical methods by computing analytically the energy levels for many large classes of exactly solvable shape-invariant potentials. For these potentials, the ground-state energies computed via the WKB method typically deviate from the exact results by about 10%, a recently suggested modification, using nonintegral Maslov indices, is substantially better, and the supersymmetric WKB quantization method gives exact answers for all energy levels.