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Questions related to Elementary Particle Physics
The course of the relative nuclear binding energy shows a continuous periodicity and pronounced maxima. It can be found to any maximum a particle grid with particularly high symmetry (see figure...
04 April 2016 9,564 2 View
The electron-positron pair production as well as the β+-emission require a minimum energy of 1,022MeV. Therefore it can be stated that the underlying cause of the β+-emission is a...
04 April 2016 2,248 31 View
How to estimate/find the number of free electrons in Pb2O3 Nanoparticle, say 40 nm diameter, spherical. (not aware of the phase)
13 March 2016 892 2 View
The Hanbury Brown and Twiss (HB&T) experiment was done properly with photons. The team of Aspect performed with fermions experiments that have some analogy with the HB&T experiment in the...
03 March 2016 690 5 View
This has reference to the Feynman-Stuckelberg interpretation of negative enrgy solutions in QFTs. There seems to be no a priori reason why we should see only positive energies in forward time...
03 March 2016 9,457 65 View
According to the standard model a neutron is considered as a compound system of three quarks udd, and the antineutron as a compound system of the corresponding antiquarks. Suppose (1) that any...
03 March 2016 2,663 18 View
02 March 2016 6,098 17 View
According to Yukawa theory, long range force carrier particle have zero mass.but how does it have spin 2?
02 February 2016 6,796 38 View
Can we probe the quantum gravity era just after the big bang?
02 February 2016 896 3 View
Hello I am trying to make a digital positron lifetime setup. For that one needs a fast digitizer with high GS/s and bandwidth (preferably in GHz). what will be the best digitizer card to make...
02 February 2016 5,321 8 View
1. The Idea of alternative nucleon states is suggested by the near-identity of the masses of neutron and proton. 2. Charge Independence into one of Charge-Symmetry. 3. A new Quantum number :...
02 February 2016 8,124 1 View
I am studying some paper about energy loss in p-A collisions and I always see coherent scattering and incoherent scattering term. What means "soft gluon radiation is fully coherent over the medium"?
19 January 2016 9,133 3 View
I need to know the names of good books in quarkonia properties a for example Energy, Mass, radius, velocity, in non-relativistic case.
16 January 2016 7,632 4 View
I am reading a paper (arXiv:hep-ph/0002198v2) where it says the formation time of the radiation is proportional to energy and inversely proportional to the squared tranversal momentum (Eq. 3.18 in...
01 January 2016 7,689 3 View
01 January 2016 7,427 4 View
01 January 2016 1,643 5 View
As far as I know the amplitude of the particle wave gives us the probability to find that particle or another fundamental particle in a particular space and time coordinate. But this is the...
01 January 2016 5,737 57 View
What happens if I perform a Wick rotation when I work with a signature (+,-,-,-) ? Is a negative euclidean metric a problem? What's the sense for that? I can perform the wick rotation in two...
01 January 2016 6,849 2 View
The classical electron radius is well known and effectively represents the charge radius which is 2.82 X 10^-15 m. The "physical" radius of the free electron has yet to be determined...
30 December 2015 6,819 79 View
Once a photon of light is born, it travels at a speed of 300,000 km/sec until it collides with a charged particle and is diverted in another...
28 December 2015 8,170 48 View
The usual “Copenhagen interpretation” emphasizes the role of a human experimenter, outside the system being discussed, making measurements, typically on multiple copies of the system. Such an...
20 December 2015 6,336 3 View
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12 December 2015 5,973 0 View
12 December 2015 8,433 80 View
when we say that linear momentum is being conserved in an isolated system,its because change of momentum is related to a force,so if there's no force, momentum needs to be conserved.Likewise what...
12 December 2015 3,381 5 View