scholarly journals DOUBLE-LEPTON POLARIZATION ASYMMETRIES IN B → K1l+l- DECAY IN UNIVERSAL EXTRA DIMENSION

2012 ◽  
Vol 27 (08) ◽  
pp. 1250036
Author(s):  
B. B. ŞIRVANLI
Keyword(s):  
Standard Model ◽  
Extra Dimension ◽  
Model Parameters ◽  
Experimental Measurements ◽  
Beyond The Standard Model ◽  
Universal Extra Dimension ◽  
The Standard Model ◽  
Lepton Polarization ◽  
Theoretical Results

The double-lepton polarization asymmetries for the exclusive B → K1l+l- transition is studied in the universal extra dimension. It is shown that most of the double-lepton polarization asymmetries are sensitive to the model parameters. Any experimental measurements on double-lepton polarizations and their comparison with theoretical results can give valuable information on the physics beyond the standard model.

scholarly journals EFFECTS OF UNIVERSAL EXTRA DIMENSIONS ON HIGGS SIGNALS AT LHC

2008 ◽  
Vol 23 (06) ◽  
pp. 823-834 ◽  
Author(s):  
SANTOSH KUMAR RAI
Keyword(s):  
Higgs Boson ◽  
Large Hadron Collider ◽  
Standard Model ◽  
Extra Dimension ◽  
Extra Dimensions ◽  
Hadron Collider ◽  
Beyond The Standard Model ◽  
Universal Extra Dimension ◽  
Major Focus ◽  
The Standard Model

A major focus at the Large Hadron Collider (LHC) will be on Higgs boson studies and it would be an interesting prospect to simultaneously probe for physics beyond the Standard Model in the Higgs signals. In this work we show as to what extent, the effects of universal extra dimension (UED) can be isolated at the LHC through the Higgs signals. By doing a detailed study of the different uncertainties involved in the measurement of the rates for the process pp →h →γγ, we estimate the extent to which these uncertainties can mask the effects of the contributions coming from UED.

scholarly journals The Standard Model with one universal extra dimension

Pramana ◽  
2013 ◽  
Vol 80 (3) ◽  
pp. 369-412 ◽  
Author(s):  
A CORDERO-CID ◽  
M GÓMEZ-BOCK ◽  
H NOVALES-SÁNCHEZ ◽  
J J TOSCANO
Keyword(s):  
Standard Model ◽  
Extra Dimension ◽  
Universal Extra Dimension ◽  
The Standard Model

scholarly journals Quark-flavor-changing Higgs decays from a universal extra dimension

2020 ◽  
Vol 35 (24) ◽  
pp. 2050141
Author(s):  
Carlos M. Farrera ◽  
Alejandro Granados-González ◽  
Héctor Novales-Sánchez ◽  
J. Jesús Toscano
Keyword(s):  
Standard Model ◽  
Extra Dimension ◽  
New Physics ◽  
Tree Level ◽  
Universal Extra Dimension ◽  
Loop Level ◽  
Flavor Changing ◽  
The Standard Model ◽  
The One ◽  
Kaluza Klein

Kaluza–Klein fields characterizing, from a four-dimensional viewpoint, the presence of compact universal extra dimensions would alter low-energy observables through effects determined by some compactification scale, [Formula: see text], since the one-loop level, thus being particularly relevant for physical phenomena forbidden at tree level by the Standard Model. This paper explores, for the case of one universal extra dimension, such new-physics contributions to Higgs decays [Formula: see text], into pairs of quarks with different flavors, a sort of decay process which, in the Standard Model, strictly occurs at the loop level. Finite results, decoupling as [Formula: see text], are calculated. Approximate short expressions, valid for large compactification scales, are provided. We estimate that Kaluza–Klein contributions lie below predictions from the Standard Model, being about 2 to 3 orders of magnitude smaller for compactification scales within [Formula: see text].

scholarly journals Trilinear gauge boson couplings in the standard model with one universal extra dimension

2013 ◽  
Vol 88 (1) ◽  
Author(s):  
M. A. López-Osorio ◽  
E. Martínez-Pascual ◽  
J. Montaño ◽  
H. Novales-Sánchez ◽  
J. J. Toscano ◽  
...  
Keyword(s):  
Standard Model ◽  
Gauge Boson ◽  
Extra Dimension ◽  
Universal Extra Dimension ◽  
The Standard Model ◽  
Gauge Boson Couplings

scholarly journals BEYOND THE STANDARD MODEL WITH B AND K PHYSICS

2004 ◽  
Vol 19 (06) ◽  
pp. 907-917 ◽  
Author(s):  
Y. GROSSMAN
Keyword(s):  
Standard Model ◽  
Extra Dimension ◽  
Flavor Physics ◽  
New Physics ◽  
Beyond The Standard Model ◽  
The Standard Model ◽  
Model Predictions ◽  
Physics Model ◽  
K Physics

In the first part of the talk the flavor physics input to models beyond the Standard Model is described. One specific example of such a new physics model is given: a model with bulk fermions in one non-factorizable extra dimension. In the second part of the talk we discuss several observables that are sensitive to new physics. We explain what type of new physics can produce deviations from the Standard Model predictions in each of these observables.

scholarly journals Developments in Rare Kaon Decay Physics

2000 ◽  
Vol 50 (1) ◽  
pp. 249-297 ◽  
Author(s):  
A.R. Barker ◽  
S.H. Kettell
Keyword(s):  
Standard Model ◽  
New Physics ◽  
High Mass ◽  
Current Status ◽  
Model Parameters ◽  
Beyond The Standard Model ◽  
Kaon Decay ◽  
Kaon Decays ◽  
The Standard Model

▪ Abstract  We review the current status of the field of rare kaon decays. The study of rare kaon decays has played a key role in the development of the standard model, and the field continues to have significant impact. The two areas of greatest import are the search for physics beyond the standard model and the determination of fundamental standard-model parameters. Due to the exquisite sensitivity of rare kaon decay experiments, searches for new physics can probe very high mass scales. Studies of the K → π ν[Formula: see text] modes in particular, where the first event has recently been seen, will permit tests of the standard-model picture of quark mixing and CP violation.

scholarly journals THE MUON ANOMALY: EXPERIMENT AND THEORY

2002 ◽  
Vol 17 (23) ◽  
pp. 3318-3335 ◽  
Author(s):  
◽  
J. P. MILLER
Keyword(s):  
Standard Model ◽  
Additional Data ◽  
Standard Model Prediction ◽  
Experimental Measurements ◽  
Beyond The Standard Model ◽  
A Value ◽  
The Standard Model ◽  
Standard Deviations ◽  
The Difference ◽  
Theory And Experiment

A summary is given of the present status of the theory and experiment of the anomalous magnetic moment of the muon. A difference between predicted and measured values is an indication of physics beyond the Standard Model. A new experimental measurements has produced a value which differs from a recent Standard Model prediction by about 1.6 standard deviations. When first announced, the discrepancy was about 2.6 standard deviations, but theorists have recently found an error in the sign of the largest term in standard model hadronic light-by-light contribution which reduces the difference. Additional data are being analyzed and elements of the theory are being scrutinized to provide, in the future, a sharper test of theory.

KALUZA–KLEIN MODE CORRECTIONS TO $\bar{B}\rightarrow X_s\gamma$ IN ACD MODEL

2012 ◽  
Vol 27 (05) ◽  
pp. 1250011 ◽  
Author(s):  
TIE-JUN GAO ◽  
TAI-FU FENG ◽  
JIAN-BIN CHEN
Keyword(s):  
Numerical Analysis ◽  
Standard Model ◽  
Extra Dimension ◽  
Branching Ratio ◽  
Universal Extra Dimension ◽  
The Standard Model ◽  
Acd Model ◽  
Kaluza Klein

We discuss the corrections from the Kaluza–Klein (KK) modes to the branching ratio of the rare process [Formula: see text] in extension of the standard model with a universal extra dimension, which was proposed by Appelquist, Cheng and Dobrescu (ACD). Assuming 1/R≫mW, we sum over the series composed by the KK towers, and get the decoupling result in the limit 1/R→∞. The numerical analysis indicates that the corrections from the KK-excitations to the branching ratio of [Formula: see text] is about 3.5% as 1/R = 400 GeV .

Sign in / Sign up

Export Citation Format

Share Document