Zobrazeno 1 - 10
of 472
pro vyhledávání: '"Kniehl, B."'
Autor:
Kniehl, B. A., Velizhanin, V. N.
We consider the nonplanar universal anomalous dimension of twist-two operators at four loops in N=4 supersymmetric Yang-Mills theory and push its direct diagrammatic calculation through Lorentz spin j=20, one unit beyond the state of the art, so as t
Externí odkaz:
http://arxiv.org/abs/2409.09463
Autor:
Kniehl, B. A., Velizhanin, V. N.
We perform direct diagrammatic calculations of the anomalous dimensions of twist-two operators in extended N=2 and N=4 super Yang-Mills theories (SYM). In the case of N=4 SYM, we compute the four-loop anomalous dimension of the twist-two operator for
Externí odkaz:
http://arxiv.org/abs/2312.05888
We determine the master integrals for vertex and propagator diagrams that appear in effective field theories containing heavy fields. The integrals involve at least one heavy line, and the standard lines include an arbitrary mass scale. The evaluatio
Externí odkaz:
http://arxiv.org/abs/2110.10662
Autor:
Kniehl, B. A., Velizhanin, V. N.
We compute the non-planar contribution to the universal anomalous dimension of twist-two operators in N=4 supersymmetric Yang-Mills theory at four loops through Lorentz spin eighteen. Exploiting the results of this and our previous calculations along
Externí odkaz:
http://arxiv.org/abs/2103.16420
We consider the short-distance expansion of the product of two gluon field strength tensors connected by a straight-line-ordered Wilson line. The vacuum expectation value of this nonlocal operator is a common object in studies of the QCD vacuum struc
Externí odkaz:
http://arxiv.org/abs/2103.09478
Publikováno v:
Phys. Rev. D 103, 094002 (2021)
We study the cross sections for the inclusive production of $\psi(2S)$ and $X(3872)$ hadrons in $pp$ collisions at the LHC at two different center-of-mass energies and compare with experimental data obtained by the ATLAS, CMS, and LHCb collaborations
Externí odkaz:
http://arxiv.org/abs/2103.00876
Autor:
Arbuzov, A., Bacchetta, A., Butenschoen, M., Celiberto, F. G., D'Alesio, U., Deka, M., Denisenko, I., Echevarria, M. G., Efremov, A., Ivanov, N. Ya., Guskov, A., Karpishkov, A., Klopot, Ya., Kniehl, B. A., Kotzinian, A., Kumano, S., Lansberg, J. P., Liu, Keh-Fei, Murgia, F., Nefedov, M., Parsamyan, B., Pisano, C., Radici, M., Rymbekova, A., Saleev, V., Shipilova, A., Song, Qin-Tao, Teryaev, O.
The Spin Physics Detector (SPD) is a future multipurpose experiment foreseen to run at the NICA collider, which is currently under construction at the Joint Institute for Nuclear Research (JINR, Dubna, Russia). The physics program of the experiment i
Externí odkaz:
http://arxiv.org/abs/2011.15005
Autor:
Assi, B., Kniehl, B. A.
We compute the massive gauge and scalar corrections to form factors in both the Sudakov and threshold regimes up to and including two-loop orders. The corrections are calculated for processes involving two external fermions and scalars in the spontan
Externí odkaz:
http://arxiv.org/abs/2011.14933
We find the leading electroweak corrections to the Lagrangians of heavy-quark effective theory and nonrelativistic QCD. These corrections appear in the Wilson coefficients of the two- and four-quark operators and are considered here at one-loop order
Externí odkaz:
http://arxiv.org/abs/2011.06447
Autor:
Assi, B., Kniehl, B. A.
We consider the static potential in theories exhibiting spontaneous symmetry breaking. We use our findings to calculate the static potential of the Standard Model at one-loop order. We do so in both the Wilson loop and scattering amplitude approaches
Externí odkaz:
http://arxiv.org/abs/2011.06437