scholarly journals Physics beyond the standard model with BlackHawk v2.0

2021 ◽  
Vol 81 (10) ◽  
Author(s):  
Alexandre Arbey ◽  
Jérémy Auffinger
Keyword(s):  
Standard Model ◽  
Hawking Radiation ◽  
Low Energy ◽  
Beyond The Standard Model ◽  
Radiation Emission ◽  
Case Examples ◽  
The Public ◽  
Secondary Particles ◽  
The Standard Model ◽  
Careful Treatment

AbstractWe present the new version of the public code designed to compute the Hawking radiation of black holes, with both primary and hadronized spectra. This new version aims at opening an avenue toward physics beyond the Standard Model (BSM) in Hawking radiation. Several major additions have been made since version : dark matter/dark radiation emission, spin 3/2 greybody factors, scripts for cosmological studies, BSM black hole metrics with their associated greybody factors and a careful treatment of the low energy showering of secondary particles; as well as bug corrections. We present, in each case, examples of the new capabilities of .

scholarly journals From old symmetries to new symmetries: Quarks, leptons and B-L

2014 ◽  
Vol 29 (29) ◽  
pp. 1430066 ◽  
Author(s):  
Rabindra N. Mohapatra
Keyword(s):  
Standard Model ◽  
Weak Interactions ◽  
Low Energy ◽  
Neutrino Masses ◽  
Beyond The Standard Model ◽  
The Standard Model ◽  
Recent Developments

The Baryon–Lepton difference (B-L) is increasingly emerging as a possible new symmetry of the weak interactions of quarks and leptons as a way to understand the small neutrino masses. There is the possibility that current and future searches at colliders and in low energy rare processes may provide evidence for this symmetry. This paper provides a brief overview of the early developments that led to B-L as a possible symmetry beyond the standard model, and also discusses some recent developments.

scholarly journals DETERMINING αs FROM MEASUREMENTS AT Z: HOW NATURE PROMPTS US ABOUT NEW PHYSICS

1995 ◽  
Vol 10 (07) ◽  
pp. 605-613 ◽  
Author(s):  
M. SHIFMAN
Keyword(s):  
Standard Model ◽  
New Physics ◽  
Low Energy ◽  
Beyond The Standard Model ◽  
The Standard Model ◽  
Standard Deviations ◽  
The One

The value of αs (Mz) emerging from the so-called global fits based mainly on the data at the Z peak (and assuming the standard model) is three standard deviations higher than the one stemming from the low-energy phenomenology. The corresponding value of Λ QCD is very large, ~500 MeV, and is incompatible with crucial features of QCD. If persists, the discrepancy should be interpreted as due to contributions to the Z-quark-antiquark vertices which go beyond the standard model.

scholarly journals Strongly interacting dynamics beyond the standard model on a space–time lattice

2010 ◽  
Vol 368 (1924) ◽  
pp. 3657-3670 ◽  
Author(s):  
Biagio Lucini
Keyword(s):  
Standard Model ◽  
Finite Size ◽  
Higgs Sector ◽  
Chiral Condensate ◽  
Space Time ◽  
Low Energy ◽  
Beyond The Standard Model ◽  
Fundamental Theory ◽  
Strongly Interacting ◽  
The Standard Model

Strong theoretical arguments suggest that the Higgs sector of the standard model of electroweak interactions is an effective low-energy theory, with a more fundamental theory expected to emerge at an energy scale of the order of a teraelectronvolt. One possibility is that the more fundamental theory is strongly interacting and the Higgs sector is given by the low-energy dynamics of the underlying theory. I review recent works aimed at determining observable quantities by numerical simulations of strongly interacting theories proposed in the literature to explain the electroweak symmetry-breaking mechanism. These investigations are based on Monte Carlo simulations of the theory formulated on a space–time lattice. I focus on the so-called minimal walking technicolour scenario, an SU(2) gauge theory with two flavours of fermions in the adjoint representation. The emerging picture is that this theory has an infrared fixed point that dominates the large-distance physics. I shall discuss the first numerical determinations of quantities of phenomenological interest for this theory and analyse future directions of quantitative studies of strongly interacting theories beyond the standard model with lattice techniques. In particular, I report on a finite size scaling determination of the chiral condensate anomalous dimension γ , for which 0.05≤ γ ≤0.25.

scholarly journals RECENT DEVELOPMENTS IN PHYSICS BEYOND THE STANDARD MODEL

2000 ◽  
Vol 15 (supp01a) ◽  
pp. 440-463 ◽  
Author(s):  
GIAN F. GIUDICE
Keyword(s):  
Standard Model ◽  
Recent Work ◽  
Low Energy ◽  
Neutrino Masses ◽  
Beyond The Standard Model ◽  
The Standard Model ◽  
Spatial Dimensions ◽  
The Status ◽  
Recent Developments

In this talk I discuss what I believe are the most interesting recent developments in physics beyond the Standard Model. After some initial comments on neutrino masses, I discuss the status of low-energy supersymmetry and finally turn to describing some recent work in theories with extra spatial dimensions.

scholarly journals Scalar leptoquark effects on $$B \rightarrow \mu \bar{\nu }$$ decay

2019 ◽  
Vol 79 (11) ◽  
Author(s):  
Wei-Shu Hou ◽  
Tanmoy Modak ◽  
Gwo-Guang Wong
Keyword(s):  
Standard Model ◽  
Parameter Space ◽  
Low Energy ◽  
Beyond The Standard Model ◽  
Meson Decays ◽  
Scalar Leptoquark ◽  
The Standard Model ◽  
The Impact ◽  
Energy Physics

AbstractPurely leptonic B meson decays provide unique probes for physics Beyond the Standard Model. We study the impact of a scalar leptoquark, $$S_1$$S1, on $$B \rightarrow \mu \bar{\nu }$$B→μν¯ decay. We find that, for $$m_{S_1}\sim 1\ \hbox {TeV}$$mS1∼1TeV, the $$S_1$$S1 leptoquark can modify the $$B \rightarrow \mu \bar{\nu }$$B→μν¯ rate significantly. Such a leptoquark can in principle also alter the $$B \rightarrow \tau \bar{\nu }$$B→τν¯ rate. However, current searches from LHC and low energy physics provide some constraints on the parameter space.

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