Results 41 to 50 of about 25,070 (157)

CP Violation and the Role of Electroweak Penguins in Non-leptonic B Decays

, 1996
The phenomenon of CP violation in the B system and strategies for extracting CKM phases are reviewed. We focus both on general aspects and on some recent developments including CP-violating asymmetries in B_d decays, the B_s system in light of a possible
Fleischer, Robert
core   +1 more source

The Curious Concept That Almost Nobody Seemed to Care About at First: Virtual Particles in the Post‐War Period**

Berichte zur Wissenschaftsgeschichte, Volume 48, Issue 1-2, Page 143-162, August 2025.
Abstract Short‐lived, unobservable, and not subject to the usual rules of conservation of energy and momentum, virtual particles—an integral part of the conceptual framework of quantum field theory (QFT)—exhibit a number of curious characteristics which, in recent decades, have in part fueled important discussions about their ontological status ...
Jean‐Philippe Martinez
wiley   +1 more source

New physics search via angular distribution of B → D ∗ ℓν ℓ decay in the light of the new lattice data

Journal of High Energy Physics
In this article, we investigate the potential of the angular distribution of the B → D ∗ ℓν ℓ process to search for new physics signals. The Belle collaboration has analysed it to constraint V cb and the B → D ∗ form factors, under the assumption of the ...
Tejhas Kapoor, Zhuo-Ran Huang, Emi Kou
doaj   +1 more source

50 Years of quantum chromodynamics

European Physical Journal C: Particles and Fields, 2023
Quantum Chromodynamics, the theory of quarks and gluons, whose interactions can be described by a local SU(3) gauge symmetry with charges called “color quantum numbers”, is reviewed; the goal of this review is to provide advanced Ph.D.
Franz Gross, Eberhard Klempt, Stanley J. Brodsky, Andrzej J. Buras, Volker D. Burkert, Gudrun Heinrich, Karl Jakobs, Curtis A. Meyer, Kostas Orginos, Michael Strickland, Johanna Stachel, Giulia Zanderighi, Nora Brambilla, Peter Braun-Munzinger, Daniel Britzger, Simon Capstick, Tom Cohen, Volker Crede, Martha Constantinou, Christine Davies, Luigi Del Debbio, Achim Denig, Carleton DeTar, Alexandre Deur, Yuri Dokshitzer, Hans Günter Dosch, Jozef Dudek, Monica Dunford, Evgeny Epelbaum, Miguel A. Escobedo, Harald Fritzsch, Kenji Fukushima, Paolo Gambino, Dag Gillberg, Steven Gottlieb, Per Grafstrom, Massimiliano Grazzini, Boris Grube, Alexey Guskov, Toru Iijima, Xiangdong Ji, Frithjof Karsch, Stefan Kluth, John B. Kogut, Frank Krauss, Shunzo Kumano, Derek Leinweber, Heinrich Leutwyler, Hai-Bo Li, Yang Li, Bogdan Malaescu, Chiara Mariotti, Pieter Maris, Simone Marzani, Wally Melnitchouk, Johan Messchendorp, Harvey Meyer, Ryan Edward Mitchell, Chandan Mondal, Frank Nerling, Sebastian Neubert, Marco Pappagallo, Saori Pastore, José R. Peláez, Andrew Puckett, Jianwei Qiu, Klaus Rabbertz, Alberto Ramos, Patrizia Rossi, Anar Rustamov, Andreas Schäfer, Stefan Scherer, Matthias Schindler, Steven Schramm, Mikhail Shifman, Edward Shuryak, Torbjörn Sjöstrand, George Sterman, Iain W. Stewart, Joachim Stroth, Eric Swanson, Guy F. de Téramond, Ulrike Thoma, Antonio Vairo, Danny van Dyk, James Vary, Javier Virto, Marcel Vos, Christian Weiss, Markus Wobisch, Sau Lan Wu, Christopher Young, Feng Yuan, Xingbo Zhao, Xiaorong Zhou   +94 more
doaj   +1 more source

Exclusive Decays of Charm and Beauty [PDF]

, 1998
Exclusive decays of B and D mesons are discussed with the focus on the theoretical problem how to calculate the relevant hadronic matrix elements of weak operators in the framework of QCD sum rules. The three lectures are devoted to 1.
Rückl, R.
core   +1 more source

Singly Cabibbo-suppressed hadronic decays of $\Lambda_c^+$

, 2018
We study singly Cabibbo-suppressed two-body hadronic decays of the charmed baryon $\Lambda_c^+$, namely, $\Lambda_c^+\to \Lambda K^+, p\pi^0, p\eta, n\pi^+,\Sigma^0K^+,\Sigma^+ K^0$. We use the measured rate of $\Lambda_c^+\to p\phi$ to fix the effective
Cheng, Hai-Yang, Kang, Xian-Wei, Xu, Fanrong   +2 more
core   +1 more source

Upper Bounds on epsilon'/epsilon Parameters B_6^{(1/2)} and B_8^{(3/2)} from Large N QCD and other News [PDF]

, 2015
We demonstrate that in the large N approach developed by the authors in collaboration with Bardeen, the parameters B_6^{(1/2)} and B_8^{(3/2)} parametrizing the K\to\pi\pi matrix elements _0 and _2 of the dominant QCD and electroweak operators receive ...
Buras, Andrzej J., Gerard, Jean-Marc
core   +2 more sources

Visible GeV ALP from TeV Vector‐Like Leptons

Fortschritte der Physik, Volume 73, Issue 3, March 2025.
Abstract A model is presented where a GeV axion‐like‐particle (ALP) is predicted in a large portion of the parameter space due to the presence of explicit Peccei–Quinn (PQ) symmetry‐breaking terms in an exotic leptonic sector. The latter provides a solution to the muon g−2$g-2$ anomaly, within the framework of the Linear Seesaw neutrino mechanism.
Arturo de Giorgi, Marta Fuentes Zamoro, Luca Merlo   +2 more
wiley   +1 more source

Direct CP asymmetry in $D\to \pi^-\pi^+$ and $D\to K^-K^+$ in QCD-based approach

, 2017
We present the first QCD-based calculation of hadronic matrix elements with penguin topology determining direct CP-violating asymmetries in $D^0\to \pi^-\pi^+$ and $D^0\to K^- K^+$ nonleptonic decays.
Khodjamirian, Alexander, Petrov, Alexey A.   +1 more
core   +2 more sources

Improved Determination of the CKM Angle alpha from B to pi pi decays [PDF]

, 2007
Motivated by a recent paper that compares the results of the analysis of the CKM angle alpha in the frequentist and in the Bayesian approaches, we have reconsidered the information on the hadronic amplitudes, which helps constraining the value of alpha ...
A. Stocchi, A. J. Buras, C. Schiavi, E. Franco, F. Parodi, G. Martinelli, L. Silvestrini, M. Bona, M. Bona, M. Bona, M. Ciuchini, M. Ciuchini, M. Pierini, P. Roudeau, V. Lubicz, V. Sordini, V. Vagnoni   +16 more
core   +3 more sources