Results 81 to 90 of about 1,867 (174)

Structure-dependent QED in B − → ℓ − ν ¯ γ $$ {B}^{-}\to {\ell}^{-}\overline{\nu}\left(\gamma \right) $$

Journal of High Energy Physics
Based on explicitly gauge invariant interpolating operators we compute complete next-leading order QED-corrections for leptonic decays. These are sizeable since the helicity-suppression in V-A interactions allows for structure-dependent collinear logs ...
Matthew Rowe, Roman Zwicky
doaj   +1 more source

Combining QED and approximate ${\rm N}^3$LO QCD corrections in a global PDF fit: MSHT20qed_an3lo PDFs

SciPost Physics
We present the MSHT20qed_an3lo parton distribution functions (PDFs). These result from the first global PDF analysis to combine QED and approximate $N^3$LO (a$N^3$LO) QCD corrections in the theoretical calculation of the PDF evolution and cross sections ...
T. Cridge, L. A. Harland-Lang, R. S. Thorne
doaj   +1 more source

Towards Precision Spectroscopy of Antiprotonic Atoms for Probing Strong-field QED

Proceedings of International Conference on Exotic Atoms and Related Topics and Conference on Low Energy Antiprotons — PoS(EXA-LEAP2024)
PAX (antiProtonic Atom X-ray spectroscopy) is a new experiment with the aim to test strong-field quantum electrodynamics (QED) effects by performing high-precision x-ray spectroscopy of antiprotonic atoms. By utilizing advanced microcalorimeter detection techniques and a low-energy antiproton beam provided by the ELENA ring at CERN, gaseous targets ...
Baptista, Gonçalo, Rathi, Shikha, Roosa, Michael, Senetaire, Quentin, Sommerfeldt, Jonas, Azuma, Toshiyuki, Becker, Daniel, Butin, Francois, Eizenberg, Ofir, Fowler, Joseph, Fujioka, Hiroyuki, Gamba, Davide, Garroum, Nabil, Guerra, Mauro, Hashimoto, Tadashi, Higuchi, Takashi, Indelicato, Paul, Machado, Jorge, Morgan, Kelsey, Nez, Francois, Nobles, Jason, Ohayon, Ben, Okada, Shinji, Schmidt, Daniel, Swetz, Daniel, Ullom, Joel, Yzombard, Pauline, Zito, Marco, Paul, Nancy   +28 more
openaire   +3 more sources

The photon content of the neutron

Journal of High Energy Physics
In this work, we complete our CT18qed study with the neutron’s photon parton distribution function (PDF), which is essential for the nucleus scattering phenomenology. Two methods, CT18lux and CT18qed, based on the LUXqed formalism and the DGLAP evolution,
The CTEQ-TEA collaboration, Keping Xie, Bei Zhou, T. J. Hobbs   +3 more
doaj   +1 more source

Analytical solution for QCD $$\otimes $$ ⊗ QED evolution

European Physical Journal C: Particles and Fields
We present an analytical solution for the evolution of parton distributions incorporating mixed-order QCD $$\otimes $$ ⊗ QED corrections, addressing both polarized and unpolarized cases.
Daniel de Florian, Lucas Palma Conte
doaj   +1 more source

Approaching the double-Heisenberg scaling sensitivity in the Tavis–Cummings model

APL Photonics
The pursuit of quantum-enhanced parameter estimations without the need for nonclassical initial states has long been driven by the goal of achieving experimentally accessible quantum metrology.
Yuguo Su, Tiantian Ying, Bo Liu, Xiao-Guang Wang   +3 more
doaj   +1 more source

Entanglement and Bell nonlocality in τ + τ − at the LHC using machine learning for neutrino reconstruction

Journal of High Energy Physics
Experiments at the CERN Large Hadron Collider (LHC) have accumulated an unprecedented amount of data corresponding to a large variety of quantum states.
Yulei Zhang, Bai-Hong Zhou, Qi-Bin Liu, Tong Arthur Wu, Shu Li, Tao Han, Shih-Chieh Hsu, Matthew Low   +7 more
doaj   +1 more source

Precision Test of Bound-State QED at Intermediate-Z with Kaonic Neon

We report Dirac-Fock calculations of transition energies for kaonic neon (KNe). For the most intense line, the 7-6 transition, the calculated energy is 9450.28 eV, which includes a bound-state QED (BSQED) contribution of 12.66 eV. This is in excellent agreement with the recent SIDDHARTHA-2 measurement at DA$Φ$NE of 9450.23 $\pm$ 0.37 (stat.) $\pm$ 1.50
Manti, S., Sgaramella, F., Abbene, L., Amsler, C., Artibani, F., Bazzi, M., Borghi, G., Bosnar, D., Bragadireanu, M., Buttacavoli, A., Carminati, M., Clozza, A., Clozza, F., Del Grande, R., De Paolis, L., Dulski, K., Fabbietti, L., Fiorini, C., Friščić, I., Guaraldo, C., Iliescu, M., Indelicato, P., Iwasaki, M., Khreptak, A., Marton, J., Moskal, P., Napolitano, F., Niedźwiecki, S., Ohnishi, H., Piscicchia, K., Principato, F., Scordo, A., Silarski, M., Sirghi, D., Sirghi, F., Skurzok, M., Spallone, A., Sommerfeldt, J., Toscano, L. G., Toho, K., Doce, O. Vazquez, Zmeskal, J., Curceanu, C.   +42 more
openaire   +2 more sources

Laser spectroscopy of simple atoms and precision tests of bound state QED

, 2000
10 pages, 8 figures, invited talk at 3rd Simposium on Modern Problems of Laser Physics (Novosibirsk, 2000)
openaire   +2 more sources

Focused angular N -body event generator (FANG)

Journal of High Energy Physics
We introduce FANG (Focused Angular N -body event Generator), a new Monte Carlo tool for efficient event generation in restricted Lorentz-Invariant Phase Space (LIPS).
Itay Horin, Arik Kreisel, Or Alon
doaj   +1 more source