Contact experts in Elementary Particle Physics to get answers
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Questions related to Elementary Particle Physics
The diffraction of light has been referred to as its wave quality since it seemed there was no other solution to describe that phenomenon as its particle quality and subsequently, it exhibited...
12 December 2019 6,416 27 View
Particle Size of course depends on the scale we are interested in. Still at a particular scale what will be the relative size?
05 May 2019 1,290 12 View
elements are written in terms of generators S and T 1 , S, T, ST, TS, T2, STS, ,TST, T2ST, TST2, T2S, ST2 How do I multiply S with T2ST from left How do I multiply S with TST2 from left
10 October 2017 5,186 19 View
In a parallel thread under the headline „Does formation of elementary particles confirm Mach's principle?“ (see reference below) we are meanwhile discussing the internal structure of protons and...
08 October 2017 2,319 22 View
In a recently published research proposal entitled „Triple-gyro model for deduction of proton radius and magnetic moment“, see reference below, I started by linking classical mechanical with...
24 September 2017 9,994 50 View
The behaviour of Molybdenum-oxides. Petroleum Refining.
08 May 2017 3,717 3 View
05 May 2017 6,236 4 View
I often see precision measurements of the tt¯Htt¯H process at the (HL-)LHC justified by the statement that "it's the only cross-section that's directly proportional to the Higgs-top Yukawa coupling
05 May 2017 513 2 View
Majorana fermions do not have vector interaction and hence there is no spin-independent direct search cross section for majorana like WIMPs. Can anyone please show me the proof ?
04 April 2017 5,787 3 View
In the book 'Particle Dark Matter: Observations, Models and Searches' by Gianfranco Bertone I came across the following statement: '...the sea quarks and gluons do not contribute to the vector...
04 April 2017 3,540 11 View
How can I obtain the DM DM -> SM SM annihilation cross section if the DM effective operator is given? It would be really helpful if someone can show me the detail derivation.
10 March 2017 6,244 3 View
For a Vector Boson DM, I have the following spin-independent direct detection (scattering) cross-section with nucleus (please see the attahced file), where n_n and n_p are the number of nucleons...
05 March 2017 7,380 3 View
The uncertainty principle is said to forbid the existence of electrons in the nucleus as its constituents. They are formed just prior to or during beta decay. the energies which uncertainty...
03 March 2017 2,779 16 View
03 March 2017 3,502 4 View
03 March 2017 4,303 4 View
Dear people, I'm confused about the general interpretation between determinism and quantum mechanics. Over 200 years ago Laplace claimed, that if an entity (he called it the demon) would know the...
02 February 2017 1,797 23 View
As per standard model of electroweak interactions, proton decays with a half life of 10^32 years. why free proton decays?
02 February 2017 5,378 11 View
What is the physical meaning of Vacuum expectation value. If we have a 2D plot for potential V(\phi) for the scalar field for negative mass square, then which distance is vev in that plot?
09 September 2016 3,639 4 View
The essense of Lorenz transformation as derived by Einstein (from 2 principles) is to justify the constant light velocity. To obtain the Lorentz coordinate transformations he says that in the two...
09 September 2016 7,234 89 View
04 September 2016 9,228 3 View
how many goldstone bosons appear as a spntaneous symmetry breaking in process of higgs mechanism? The SM SU(3)_{C}xSU(2)_{L}xU(1)_{Y} breaks down to SU(3)_{C}xU(1)_{EM} as a result of spontaneous...
23 August 2016 8,551 4 View
One can not deny the possibility that the three neutrino masses may be approximately degenerate at the low energy scale : m1 ~ m2 ~ m3. Is this possible that we can experience the situations...
22 August 2016 1,201 3 View
We have come across several works , where some discrete symmetries is invoked for the stability of a potential DM candidate. That we do by assigning Z_n charges on the respective particles whom we...
10 August 2016 451 3 View
Dear Sirs, In many textbooks the length contraction, time dilation are deduced from the Lorentz transformation formula. Can any way be to understand qualitatively these phenomena WITHOUT the...
08 August 2016 10,249 0 View