Results 41 to 50 of about 1,362,749 (337)

Signatures of Light New Particles in $B\to K^{(*)} E_{\rm miss}$ [PDF]

The recent Belle II observation of $B \to K E_{\rm miss}$ challenges theoretical interpretations in terms of Standard Model neutrino final states. Instead, we consider new physics scenarios where up to two new light-invisible particles of spin 0 up to 3/2 are present in the final state.
Patrick D. Bolton, Svjetlana Fajfer, Jernej F. Kamenik, Martín Novoa-Brunet   +3 more
openalex   +3 more sources

Probing an MeV-scale scalar boson in association with a TeV-Scale top-quark partner at the LHC

Journal of High Energy Physics, 2023
Searches for new low-mass matter and mediator particles have actively been pursued at fixed target experiments and at e + e − colliders. It is challenging at the CERN LHC, but they have been searched for in Higgs boson decays and in B meson decays by the
Bhaskar Dutta, Sumit Ghosh, Alfredo Gurrola, Dale Julson, Teruki Kamon, Jason Kumar   +5 more
doaj   +1 more source

Probing R-parity violation in B-meson decays to a baryon and a light neutralino

Journal of High Energy Physics, 2023
We propose a search for B meson decays to a baryon plus missing energy at the Belle II experiment to probe supersymmetry with a GeV-scale lightest neutralino χ ~ 1 0 $$ {\overset{\sim }{\chi}}_1^0 $$ and R-parity violation (RPV).
Claudio O. Dib, Juan Carlos Helo, Valery E. Lyubovitskij, Nicolás A. Neill, Abner Soffer, Zeren Simon Wang   +5 more
doaj   +1 more source

Anomalous Diffusion in Velocity Space [PDF]

, 2009
The problem of anomalous diffusion in the momentum space is considered on the basis of the appropriate probability transition function (PTF). New general equation for description of the diffusion of heavy particles in the gas of the light particles is ...
Brockmann, Ebeling, Gopikrishnan, Klafter, Landau, Metzler, Monin, Ott, Perri, Perri, Rinn, S.A. Trigger, Scher, Sokolov, Trigger, Trigger, Trigger, West, Zimbardo   +18 more
core   +1 more source

Matched detectors as definers of force

, 2004
Although quantum states nicely express interference effects, outcomes of experimental trials show no states directly; they indicate properties of probability distributions for outcomes.
Aharonov, Barton, Chaney, Dirac, F. Hadi Madjid, Feller, Feynman, Gray, John M. Myers, Myers, Myers, Rudin, Rudin, von Neumann   +13 more
core   +3 more sources

Fermionic Light Dark Matter Particles and the New Physics of Neutron Stars [PDF]

Publications of the Astronomical Society of Australia, 2017
AbstractDark Matter constitutes most of the matter in the presently accepted cosmological model for our Universe. The extreme conditions of ordinary baryonic matter, namely high density and compactness, in Neutron Stars make these objects suitable to gravitationally accrete such a massive component provided interaction strength between both, luminous ...
Cermeño, M., Pérez-García, M. Ángeles, Silk, Joseph   +2 more
openaire   +2 more sources

The Light in a New Light: Always a Wave, Never a Particle [PDF]

Science Discovery, 2015
Though it has been widely viewed that the light consists of quantum particles known as photons, the light is not made of quantum particles or photons, and the light is always a wave. What is quantized in the light is the frequency. The electromagnetic frequency is always quantized due to the quantized nature of the electromagnetic energy; the quantum ...
openaire   +1 more source

Light spin-1/2 or spin-0 Dark Matter particles

, 2004
We recall and precise how light spin-0 particles could be acceptable Dark Matter candidates, and extend this analysis to spin-1/2 particles. We evaluate the (rather large) annihilation cross sections required, and show how they may be induced by a new ...
B. Lee, C. Boehm, C. Boehm, C. Boehm, C. Boehm, C. Boehm, G. Farrar, G. Jungman, G.W. Benett, H. Goldberg, J. Ellis, L. Krauss, M. Davier, P. Fayet, P. Fayet, P. Fayet, P. Fayet, P. Fayet, P. Fayet, P. Fayet, P. Fayet, P. Fayet, P. Fayet, P. Fayet, P. Jean, R.C. Allen, R.C. Allen   +26 more
core   +2 more sources

New limits on light scalar and pseudoscalar particles produced in nuclear decay [PDF]

Physical Review D, 1988
We present the results of a search for scalar and pseudoscalar particles produced in nuclear deexcitation. Measurements of the angular correlation of e+e- pairs emitted from excited states of 14N, 16O, and 8Be provided sensitivity to particles with lifetimes 10^-19 < τ < 10^-11 s within the mass range 2me < MX < 5 MeV.
Savage, M. J., Filippone, B. W., Mitchell, L. W.   +2 more
openaire   +3 more sources

Searches for sterile neutrinos (and other light particles)

, 2004
Future neutrino and cosmological experiments will perform powerful searches for new light particles. After a general introduction we discuss how a new light fermion (`sterile neutrino') could manifest.Comment: 8 pages, 5 figures.
Abazajian, Alessandro Strumia, Arkani-Hamed, Barger, Bashinsky, Beacom, Beacom, Cacciapaglia, Chhacko, Cirelli, Crotty, De Gouvea, de Holanda, Hannestad, Hannestad, Ioannisian, Kopeikin, Lewis, Liddle, Maltoni, Okui, Peres, Pierpaoli, Spergel, Strumia, Strumia   +25 more
core   +1 more source