Results 41 to 50 of about 30,203 (242)

Testing new physics with the electron g-2 [PDF]

, 2012
We argue that the anomalous magnetic moment of the electron (a_e) can be used to probe new physics. We show that the present bound on new-physics contributions to a_e is 8*10^-13, but the sensitivity can be improved by about an order of magnitude with ...
A Czarnecki, A Czarnecki, A Lusiani, A Masiero, A Masiero, A Petermann, A Petermann, AG Cohen, B Aubert, B Aubert, B Aubert, B Aubert, B Aubert, B Aubert, B Aubert, B Aubert, B Bellazzini, B Keren-Zur, B Krause, C Lazzeroni, CM Sommerfield, CM Sommerfield, D Britton, D Hanneke, D Hanneke, D Maître, E Remiddi, F Jegerlehner, G Bennett, G Bennett, G Czapek, G. F. Giudice, GA Gonzalez-Sprinberg, GF Giudice, H Brown, I Masina, J Abdallah, J Adam, J Beringer, J Bernabeu, J Bernabeu, J Girrbach, J Hisano, J Hisano, J Lees, JP Leveille, JS Schwinger, K Hagiwara, K Hayasaka, K Hayasaka, M Antonelli, M Cadoret, M Leurer, M Passera, M Passera, M Raidal, M. Passera, P Clade, P Krawczyk, P Mohr, P Paradisi, P. Paradisi, PH Chankowski, PH Chankowski, R Bouchendira, R Dyck Van, S Dimopoulos, S Eidelman, S Laporta, S Laporta, S Laporta, S Laporta, S Schael, T Aoyama, T Aoyama, T Aoyama, T Aoyama, T Aoyama, T Aoyama, T Aoyama, T Aoyama, T Aoyama, T Aoyama, T Aoyama, T Aoyama, T Aoyama, T Aoyama, T Gehrmann, T Gehrmann, T Kinoshita, U Ellwanger, V Gerginov, Y Grossman, Y Miyazaki, Y Miyazaki, Y Miyazaki, Y Miyazaki, Y Miyazaki, Y Nir, Y Nishio, YK Semertzidis   +100 more
core   +3 more sources

TAU-PAIR PRODUCTION VIA PHOTON-PHOTON COLLISIONS AT LEP [PDF]

, 1995
We point out that the cross-section for the process $e^+ e^- \to e^+ e^- \tau^+ \tau^-$ at LEP is large enough to allow for a study of the anomalous electromagnetic couplings of the $\tau$ lepton.
A. Aeppli, A. Grifols, C. Itzykson, D. Schaile, D.J. Silverman, E.R. Cohen, F. del Aguila, F. del Aguila, Fernando Cornet, G. Köpp, J. Bailey, J. Bernabéu, José I. Illana, K. Abdullah, R. Akers, R. Escribano, V.M. Budnev, W. Bernreuther, W. Bernreuther   +18 more
core   +3 more sources

Measurement of the Muon Anomalous Magnetic Moment to 0.7 ppm [PDF]

, 2002
The experimental method together with the analysis method and results of the data taken in 2000 and prospects of the muon anomalous magnetic and electric dipole moment experiments are presented here.Comment: 12 pages, 20 figures.
Semertzidis, Yannis K.
core   +4 more sources

Discovering non-Abelian weak couplings and an anomalous magnetic dipole moment of the W± at LEP 2 [PDF]

Physics Letters B, 1996
In view of the forthcoming results on $W^{\pm}$ pair production at LEP~2, we emphasize that {\em direct empirical evidence} on non-trivial properties of the weak vector bosons can be obtained with relatively limited integrated luminosity. An integrated luminosity of $10\;\mathrm{pb}^{-1}$ at $\sqrt{s}=175$ GeV will be sufficient to provide direct ...
Kuss, I, Schildknecht, Dieter
openaire   +3 more sources

Transverse spin asymmetries at the EIC as a probe of anomalous electric and magnetic dipole moments

Physical Review D, 2023
We show that inclusive single-spin asymmetries (SSAs) with transversely polarized protons or electrons at a future electron ion collider (EIC) are sensitive to new physics contributions to electroweak dipole operators of electrons and quarks.
Radja Boughezal, Daniel de Florian, Frank Petriello, Werner Vogelsang   +3 more
openaire   +3 more sources

Bounds on radii and anomalous magnetic dipole moments of quarks and leptons from LEP, SLC and HERA [PDF]

Zeitschrift für Physik C Particles and Fields, 1995
Leptons, quarks and gauge bosons are assumed to be pointlike particles in the Standard Model. Stringent bounds on the radii of quarks and leptons and their weak anomalous magnetic moments can be derived from the high-precision measurements at LEP and SLC. We find a model-independent bound ofR≲10−17 cm for quark and lepton radii.
Köpp, G., Schaile, D., Spira, M., Zerwas, P. M.   +3 more
openaire   +4 more sources

QED Logarithms in the Electroweak Corrections to the Muon Anomalous Magnetic Moment [PDF]

, 1998
We employ an effective Lagrangian approach to derive the leading-logarithm two-loop electroweak contributions to the muon anomalous magnetic moment, a_mu.
A. Czarnecki, A. Czarnecki, A. Mendez, B. Krause, D. A. Kosower, E. Braaten, E. de Rafael, F. Ferrer, G. Altarelli, G. Buchalla, G. Couture, G. Degrassi, G. F. Giudice, G. ’t Hooft, I. Bars, J. A. Grifols, J. Ellis, J. Lopez, K. Fujikawa, L. Montanet, M. Carena, M. Ciuchini, M. Hayakawa, M. Krawczyk, P. Fayet, R. Barbieri, R. Jackiw, S. Brodsky, S. Weinberg, T. C. Yuan, T. Falk, T. Ibrahim, T. Kinoshita, T. Moroi, T. V. Kukhto, U. Chattopadhyay, W. A. Bardeen, W. Siegel, Y. Kizukuri   +38 more
core   +3 more sources

Pair production and vacuum polarization of vector particles with electric dipole moments and anomalous magnetic moments [PDF]

The European Physical Journal C, 2001
The matrix, 8-component Dirac-like form of P-odd equations for boson fields of spins 1 and 0 are obtained and the GL(2,c) symmetry group of equations is derived. We found exact solutions of the field equation for vector particles with arbitrary electric and magnetic moments in external constant and uniform electromagnetic fields.
openaire   +2 more sources

Muon electric dipole moment as a probe of flavor-diagonal CP violation

Physics Letters B, 2022
Electric dipole moments (EDMs) of elementary particles are powerful probes of new physics with flavor-diagonal CP violation. The reported discrepancy in the muon anomalous magnetic moment motivates us to explore to what extent new physics with flavor ...
Yuichiro Nakai, Ryosuke Sato, Yoshihiro Shigekami   +2 more
doaj   +1 more source

Spin correlations in τ -lepton pair production due to anomalous magnetic and electric dipole moments

Physical Review D, 2022
17 pages, 2 ...
Sw. Banerjee, A. Yu. Korchin, Z. Was
openaire   +2 more sources