Results 21 to 30 of about 25,070 (157)

Calculated Event Rates for Axion Detection via Atomic and Nuclear Processes

Advances in High Energy Physics, Volume 2022, Issue 1, 2022., 2022
The possibility of detection of 5.5 MeV and 14.4 keV solar axions by observing axion‐induced nuclear and atomic transitions is investigated. The presence of nuclear transitions between spin orbit partners can be manifested by the subsequent deexcitation via gamma ray emissions.
John D. Vergados, Paraskevi C. Divari, Hiroyasu Ejiri, Luciano Petruzziello   +3 more
wiley   +1 more source

Matrix Elements From Moments of Correlation Functions [PDF]

, 2016
Momentum-space derivatives of matrix elements can be related to their coordinate-space moments through the Fourier transform. We derive these expressions as a function of momentum transfer Q^2 for asymptotic in/out states consisting of a single hadron ...
Bouchard, Chris, Chang, Chia Cheng, Orginos, Kostas, Richards, David   +3 more
core   +3 more sources

Isospin-breaking corrections to light-meson leptonic decays from lattice simulations at physical quark masses

Journal of High Energy Physics, 2023
The decreasing uncertainties in theoretical predictions and experimental measurements of several hadronic observables related to weak processes, which in many cases are now smaller than O(1%), require theoretical calculations to include subleading ...
Peter Boyle, Matteo Di Carlo, Felix Erben, Vera Gülpers, Maxwell T. Hansen, Tim Harris, Nils Hermansson-Truedsson, Raoul Hodgson, Andreas Jüttner, Fionn Ó hÓgáin, Antonin Portelli, James Richings, Andrew Zhen Ning Yong   +12 more
doaj   +1 more source

``Non-factorizable'' terms in hadronic B-meson weak decays [PDF]

, 1994
The branching ratios for the hadronic B-meson weak decays B -> J/psi K and B -> D pi are used to extract the size of the ``non-factorizable'' terms in the decay amplitudes. It is pointed out that the solutions are not uniquely determined.
A. Ali, A. J. Buras, A. Kamal, B. Blok, B. Grinstein, C. Albajar, C. S. Lim, G. Altarelli, H. Y. Cheng, J. D. Bjorken, João M. Soares, L. Bergström, M. Bauer, M. Gronau, M. K. Gaillard, M. S. Alam, M. Wirbel, N. G. Deshpande, N. Isgur, N. Paver, P. J. O'Donnell, S. Narison, S. Narison   +22 more
core   +3 more sources

An accurate evaluation of electron (anti-)neutrino scattering on nucleons

Journal of High Energy Physics, 2022
We discuss as accurately as possible the cross section of quasi-elastic scattering of electron (anti-)neutrinos on nucleons, also known as inverse beta decay in the case of antineutrinos.
Giulia Ricciardi, Natascia Vignaroli, Francesco Vissani   +2 more
doaj   +1 more source

QCD Aspects of Exclusive B Decays [PDF]

, 2001
Exclusive B decays can be factorized as convolutions of hard scattering amplitudes involving the weak interaction with universal hadron distribution amplitudes, thus providing a new QCD-based phenomenology. In addition, semi-leptonic decay amplitudes can
Brodsky, Stanley J.
core   +3 more sources

Decay amplitudes to three hadrons from finite-volume matrix elements

Journal of High Energy Physics, 2021
We derive relations between finite-volume matrix elements and infinite-volume decay amplitudes, for processes with three spinless, degenerate and either identical or non-identical particles in the final state.
Maxwell T. Hansen, Fernando Romero-López, Stephen R. Sharpe   +2 more
doaj   +1 more source

CP Violation and Strong Phases from Penguins in $\bf B^{\pm}\rightarrow VV$ Decays [PDF]

, 1994
We calculate direct CP-violating observables in charged $B\to VV$ decays arising from the interference of amplitudes with different strong and CKM phases. The perturbative strong phases develop at order $\alpha_s$ from absorptive parts of one-loop matrix
Albrecht, Altarelli, Bander, Bardeen, Bauer, Bauer, Bialas, Bigi, Blok, blok, Blok, Bortoletto, Brodsky, Brodsky, Buras, Buras, Burkhardt, Cabibbo, Cabibbo, Christenson, Deshpande, Du, Fakirov, Fleischer, Fleischer, G. Kramer, Gerard, Gerard, Gilman, H. Simma, Kobayashi, Kramer, Kramer, Kramer, Patterson, Ponce, Schmidtler, Simma, Simma, Szczepaniak, Valencia, W.F. Palmer, Wolfenstein, Wolfenstein   +43 more
core   +2 more sources

Hadronic B decays: Supersymmetric enhancement and a simple spectator model [PDF]

, 1999
Two aspects of hadronic B decays are investigated. Firstly, the supersymmetric enhancement of hadronic b decays by gluino penguin processes is studied through their effect on the Wilson coefficients of the effective Hamiltonian.
A. Ali, A. Ali, A. Ali, A. Ali, A. B. Lahanas, A. J. Buras, A. J. Buras, A. J. Buras, A. J. Buras, A. L. Kagan, C. Caso, C. S. Kim, C.-K. Chua, C.-S. Huang, D. Atwood, D. Atwood, D. Fakirov, G. Altarelli, G. Buchalla, G. Kramer, G. Kramer, G. L. Kane, H. Mehrban, H.-P. Nilles, H.-Y. Cheng, H.-Y. Cheng, I. B. Whittingham, J. Ellis, J. F. Donoghue, J. L. Hewett, J. L. Rosner, J.-H. Jang, J.-M. Gérard, J.-M. Gérard, K. Lingel, M. Aoki, M. Aoki, M. Bander, M. Ciuchini, M. Gronau, M. Neubert, N. G. Deshpande, N. G. Deshpande, N. G. Deshpande, N. G. Deshpande, O. Haan, R. Barbieri, R. Fleischer, R. Fleischer, R. Fleischer, R. P. Feynman, S. A. Abel, S. A. Abel, S. Baek, S. Bertolini, S. Bertolini, S. R. Choudhury, T. Goto, T. Inami, T. Inami, V. Barger, W. de Boer, W. N. Cottingham, W.-S. Hou, W.-S. Hou, X.-G. He, X.-G. He, Y. G. Kim, Y. Nir, Y.-H. Chen   +69 more
core   +3 more sources

Exploring new physics contributions to CP violation in $$\tau ^- \rightarrow K^-\pi ^0\nu _{\tau } $$ τ - → K - π 0 ν τ

European Physical Journal C: Particles and Fields, 2021
A general analysis of possible violation of CP in processes like $$\tau \rightarrow K\pi \nu $$ τ → K π ν , for unpolarized $$\tau $$ τ is presented. In this paper, we derive the new contributions to the effective Hamiltonian governs $$\vert \Delta S ...
David Delepine, Gaber Faisel, Carlos A. Ramirez   +2 more
doaj   +1 more source