Results 131 to 140 of about 1,004,536 (238)

An Interview With Peter Rousseeuw

open access: yesInternational Statistical Review, Volume 93, Issue 1, Page 1-17, April 2025.
Summary Peter J. Rousseeuw is a statistician known mainly for his work on robust statistics and cluster analysis. Among his creations are least trimmed squares regression, the minimum covariance determinant estimator, the partitioning around medoids clustering method and the silhouettes graphical display.
Mia Hubert
wiley   +1 more source

Exploring Dark Photon Production and Kinetic Mixing Constraints in Heavy‐Ion Collisions

open access: yesAstronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.
ABSTRACT Vector U‐bosons, often referred to as “dark photons,” are potential candidates for mediating dark matter interactions. In this study, we outline a procedure to derive theoretical constraints on the upper bound of the kinetic mixing parameter ϵ2MU$$ {\upvarepsilon}^2\left({M}_U\right) $$ using dilepton data from heavy‐ion from SIS to RHIC ...
Adrian William Romero Jorge   +3 more
wiley   +1 more source

B ¯ → D ¯ D $$ \overline{B}\to \overline{D}D $$ decays and the extraction of f d /f u at hadron colliders

open access: yesJournal of High Energy Physics
We perform a detailed model-independent phenomenological analysis of B ¯ → D ¯ D $$ \overline{B}\to \overline{D}D $$ decays. Employing an SU(3) F analysis including symmetry-breaking contributions together with a conservative power counting for various ...
Jonathan Davies   +2 more
doaj   +1 more source

Spatially Explicit Model to Disentangle Effects of Environment on Annual Fish Reproduction

open access: yesEnvironmetrics, Volume 36, Issue 2, March 2025.
ABSTRACT Population growth models are essential tools for natural resources management and conservation since they provide understanding on factors affecting renewal of natural animal populations. However, we still do not properly understand how the processes underlying reproduction of natural animal populations are affected by the environment at the ...
Ilaria Pia   +3 more
wiley   +1 more source

Heavy Quarks on the Lattice

open access: yes, 2004
Lattice quantum chromodynamics provides first principles calculations for hadrons containing heavy quarks -- charm and bottom quarks. Their mass spectra, decay rates, and some hadronic matrix elements can be calculated on the lattice in a model ...
Hashimoto, Shoji, Onogi, Tetsuya
core   +1 more source

Precise Charm and Bottom quark masses

open access: yes, 2007
4 pages, 2 figures, talk given by Johann H.
Kühn, J. H.   +2 more
openaire   +2 more sources

Measuring Charm and Bottom Quark Masses

open access: yes, 1993
The meaning and the extraction of heavy quark masses are discussed. A simple production model is presented which incorporates the running of the heavy quark mass into perturbative calculations. The model offers the possibilities of (i) understanding the differing charmed mass values extracted from different experiments, (ii) determining the short ...
Weiler, Thomas J., Ghafoori--Tabrizi, K.
openaire   +2 more sources

The Standard Model prediction for the rare decay B → X s ν ν ¯ $$ B\to {X}_s\nu \overline{\nu} $$

open access: yesJournal of High Energy Physics
We present updated and comprehensive Standard Model predictions for the inclusive rare decay B → X s ν ν ¯ $$ B\to {X}_s\nu \overline{\nu} $$ . Using a state-of-the-art determination of the short-distance coefficient, including NLO QCD and electroweak ...
Matteo Fael   +3 more
doaj   +1 more source

Rediscovering the Standard Model with AI

open access: yesJournal of High Energy Physics
We investigate whether artificial intelligence can reproduce and organize known structures of the Standard Model of particle physics using experimental data and with minimal theoretical inputs.
Aya Abdelhaq   +2 more
doaj   +1 more source

Observability of Higgs produced with top quarks and decaying to bottom quarks

open access: yesJournal of Physics G: Nuclear and Particle Physics, 2007
The decay, H → bb, is dominant for a Standard Model Higgs boson in the mass range just above the exclusion limit of 114.4 GeV/c 2 reported by the LEP experiments. Unfortunately, an overwhelming abundance of b¯ b events arising from more mundane sources, together with the lack of precision inherent in the reconstruction of the Higgs mass, renders this ...
D. BENEDETTI   +9 more
openaire   +3 more sources

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