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Luchinsky A.V.,RAS Institute for High Energy Physics
Physical Review D - Particles, Fields, Gravitation and Cosmology | Year: 2012

The paper is devoted to vector or pseudoscalar heavy quarkonia production ψ( ′), Bs(*) in association with three or five charged π mesons in exclusive B c-meson decays. Using available form factor parametrizations and spectral functions of W→3π, W→5π transitions, we obtain branching fractions of these decays and distributions over the invariant mass of the (nπ) system. © 2012 American Physical Society.


Zinoviev Yu.M.,RAS Institute for High Energy Physics
Nuclear Physics B | Year: 2010

In this paper we complete our construction of frame-like gauge invariant description for massive mixed symmetry tensor fields corresponding to arbitrary Young tableau with two rows started in Zinoviev (2009) [1]. We consider general massive theory in (A) dS spaces with arbitrary cosmological constant as well as all special limits which exist both in de Sitter and in anti-de Sitter spaces. © 2009 Elsevier B.V. All rights reserved.


Zinoviev Yu.M.,RAS Institute for High Energy Physics
Journal of High Energy Physics | Year: 2010

Till now most of the results on interaction vertices for massless higher spin fields were obtained in a metric-like formalism using completely symmetric (spin-)tensors. In this, the Lagrangians turn out to be very complicated and the main reason is that the higher the spin one want to consider the more derivatives one has to introduce. In this paper we show that such investigations can be greatly simplified if one works in a frame-like formalism. As an illustration we consider massless spin 3 particle and reconstruct a number of vertices describing its interactions with lower spin 2, 1 and 0 ones. In all cases considered we give explicit expressions for the Lagrangians and gauge transformations and check that the algebra of gauge transformations is indeed closed. © 2010 SISSA, Trieste, Italy.


Zinoviev Y.M.,RAS Institute for High Energy Physics
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Year: 2014

Thirty years ago Aragone and Deser showed that in three dimensions there exists a consistent model describing interaction for massless spin-2 and spin-5/2 fields. It was crucial that these fields lived in a flat Minkowski space and as a result it was not possible to deform such model into anti-de Sitter space. In this short note we show that such deformation becomes possible provided one compliment to the model with massless spin-4 field. Resulting theory can be considered as a Chern-Simons one with a well-known supergroup OSp(1, 4). Moreover, there exists a straightforward generalization to the OSp(1, 2. n) case containing a number of bosonic fields with even spins 2, 4, . . .. , 2. n and one fermionic field with spin n+. 1/2. © 2014 Published by Elsevier B.V.


Godizov A.A.,RAS Institute for High Energy Physics
Nuclear Physics A | Year: 2014

It is demonstrated that the hard pomeron intercept value can be estimated directly from the data on the proton unpolarized structure function: αPh(0)-1=0.317±0.028. © 2014 Elsevier B.V.


Zinoviev Y.M.,RAS Institute for High Energy Physics
Nuclear Physics B | Year: 2014

We apply Fradkin-Vasiliev formalism to construction of non-trivial cubic interaction vertices for massive spin-2 particles. In this first paper as a relatively simple but instructive example we consider self-interaction and gravitational interaction of partially massless spin-2. © 2014 The Author.


Godizov A.A.,RAS Institute for High Energy Physics
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Year: 2014

A simple Regge-eikonal model with the eikonal represented as a single-reggeon-exchange term is applied to description of the nucleon-nucleon elastic diffractive scattering at ultra-high energies. The range of validity of the proposed approximation is discussed. The model predictions for the proton-proton cross-sections at the collision energy 14 TeV are given. © 2014 Elsevier B.V.


Zinoviev Y.M.,RAS Institute for High Energy Physics
Classical and Quantum Gravity | Year: 2012

In a recent paper (Boulanger et al 2011 J. Phys. A: Math. Theor. 44 415403), cubic gravitational interactions for a massless mixed symmetry field in an AdS space have been constructed. In the current paper, we extend these results to the case of massive field. We work in a FradkinVasiliev approach and use a frame-like gauge-invariant description for the massive field which works in the AdS spaces with arbitrary values of the cosmological constant including a flat Minkowski space. In this, the massless limit in the AdS space coincides with the results of Boulanger et al (2011) while we show that it is impossible to switch on a gravitational interaction for the massless field in the dS space.


Zinoviev Yu.M.,RAS Institute for High Energy Physics
Journal of High Energy Physics | Year: 2011

In this paper we investigate electromagnetic interactions for simplest massive mixed symmetry field. Using frame-like gauge invariant formulation we extend Fradkin-Vasiliev procedure, initially proposed for investigation of gravitational interactions for massless particles in AdS space, to the case of electromagnetic interactions for massive particles leaving in (A)dS space with arbitrary value of cosmological constant including flat Minkowski space. At first, as an illustration of general procedure, we re-derive our previous results on massive spin 2 electromagnetic interactions and then we apply this procedure to massive mixed symmetry field. These two cases are just the simplest representatives of two general class of fields, namely completely symmetric and mixed symmetry ones, and it is clear that the results obtained admit straightforward generalization to higher spins as well. © SISSA 2011.


Zinoviev Y.,RAS Institute for High Energy Physics
Nuclear Physics B | Year: 2013

In this paper we provide a complete list of spin-2 cubic interaction vertices with two derivatives. We work in (anti) de Sitter space with dimension d?4 and arbitrary value of cosmological constante and use simple metric formalism without any auxiliary or Stueckelberg fields. We separately consider cases with one, two and three different spin-2 fields entering the vertex where each field may be massive, massless or partially massless one. The connection of our results with massive (bi)gravity theories is also briefly discussed. © 2013 Elsevier B.V.

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