Results 101 to 110 of about 420,119 (232)

Four-graviton scattering to three loops in N = 8 $$ \mathcal{N}=8 $$ supergravity

Journal of High Energy Physics, 2019
We compute the three-loop scattering amplitude of four gravitons in N = 8 $$ \mathcal{N}=8 $$ supergravity. Our results are analytic formulae for a Laurent expansion of the amplitude in the regulator of dimensional regularisation.
J. M. Henn, B. Mistlberger
doaj   +1 more source

Graviton reggeization and high energy gravitational scattering of scalar particles

European Physical Journal C: Particles and Fields
In this paper we consider a high energy scattering of free scalar particles through a gravitational field. The one particle t-channel amplitude of the scattering in this limit is governed by reggeized graviton.
S. Bondarenko
doaj   +1 more source

Scattering Amplitude of Surface Plasmon Polariton Excited by a Finite Grating. [PDF]

Nanomaterials (Basel), 2023
Dyshlyuk AV, Proskurin A, Bogdanov AA, Vitrik OB.   +3 more
europepmc   +1 more source

Heavy quarks in deeply virtual Compton scattering

, 2003
A detailed study of the heavy quark h=c,b,... contributions to deeply virtual Compton scattering is performed at both the amplitude and the cross section level, and their phenomenological relevance is discussed.
A. Airapetian, A. Denner, A. Denner, A. Freund, A. Freund, A. Freund, A. Freund, A. V. Belitsky, A. V. Belitsky, A. V. Belitsky, A. V. Belitsky, A. V. Belitsky, A. V. Belitsky, A. V. Radyushkin, A. V. Radyushkin, A. V. Radyushkin, A. V. Radyushkin, A. V. Radyushkin, B. W. Harris, B. W. Harris, C. Adloff, C. Adloff, D. Müller, E. Witten, G. Passarino, G. ’t Hooft, H. L. Lai, I. Schienbein, J. C. Collins, J. C. Collins, J. C. Collins, J. D. Noritzsch, Jens D. Noritzsch, L. Mankiewicz, L. Mankiewicz, M. Burkardt, M. Burkardt, M. Buza, M. Diehl, M. Diehl, M. Glück, M. Glück, M. Glück, M. Glück, M. Jamin, N. Kivel, P. Hoodbhoy, S. Chekanov, S. Chekanov, S. Kretzer, S. Stepanyan, T. Appelquist, V. M. Budnev, X. Ji, X. Ji, X. Ji   +55 more
core   +3 more sources

The interplay of hadronic amplitudes and Coulomb phase in LHC measurements at 13 TeV

Physics Letters B, 2019
Detailed analysis of the measurements of differential cross sections in the forward region of pp elastic scattering at 13 TeV in LHC is performed. The structures of the real and imaginary parts of the scattering amplitude are investigated, both requiring
A.K. Kohara, E. Ferreira, M. Rangel
doaj   +1 more source

Analytical Calculations of Scattering Amplitude of Surface Plasmon Polaritons Excited by a Spherical Nanoantenna. [PDF]

Nanomaterials (Basel), 2021
Dyshlyuk AV, Proskurin A, Bogdanov AA, Vitrik OB.   +3 more
europepmc   +1 more source

The ππ scattering amplitude at large N c

Journal of High Energy Physics
We study the scaling of meson-meson scattering amplitudes with the number of colors, N c. We use lattice calculations in a theory with N f = 4 degenerate flavors, with N c = 3 – 6 and pion mass M π ≈ 560 MeV.
Jorge Baeza-Ballesteros, Pilar Hernández, Fernando Romero-López   +2 more
doaj   +1 more source

Vector meson electroproduction at next-to-leading order

, 2004
The process of a light neutral vector meson electroproduction is studied in the framework of QCD factorization in which the amplitude factorizes in a convolution of the nonperturbative meson distribution amplitude and the generalized parton densities ...
A. D. Martin, A. V. Belitsky, D. Yu. Ivanov, D. Yu. Ivanov, E. V. Kuraev, E. V. Shuryak, G. Krasnikov, J. Breitweg, J. C. Collins, J. Nemchik, J. Nemchik, L. Mankiewicz, L. Szymanowski, M. Diehl, M. G. Ryskin, N. N. Nikolaev, S. J. Brodsky   +16 more
core   +1 more source

Cwebs in multiparton scattering amplitude: Structures at four loops [PDF]

EPJ Web of Conferences
Soft function exponentiates in terms of the soft anomalous dimension ΓS; the Feynman diagrams contributing to it are called Cwebs. The colour and kinematics of a Cweb mix via a web mixing matrix – calculation of web mixing matrices at higher loop orders ...
Agarwal Neelima, Pal Sourav, Srivastav Aditya, Tripathi Anurag   +3 more
doaj   +1 more source

Atomic scattering amplitudes for electron diffraction [PDF]

, 1954
James A. Ibers, J. A. Hoerni
openalex   +1 more source