Recent content by thoms2543

I have a process that a scalar and a photon at the final state. When we take the complex conjugate and sum over photon final polarization state...it give negative sign in the differential cross section...what does this mean? the trace didn't give negative value. M=M^{\mu}\cdot\epsilon_{\nu}...

e^- + e^+\rightarrow\overline{\nu}_e + \nu_e + H Can it possible for this process happen in lab frame? i.e. the positron is accelerated to collide with the electron target.

Thanks

I am trying to draw feynman diagram by using LaTeX code but the label in the code do not appear in the pdf(only the diagram appear). I am using the MikTeX 2.8 in windows XP and userpackage is feynmf. I have try several time and search through the web but I can't figure out any solution for this...

http://prd.aps.org/abstract/PRD/v42/i5/p1673_1 I read it from this paper. and Nucl. Phys. B262 463 (1985). They mention that the Higgs field can be classified according to their transformation properties under the the custodial SU(2) approximate symmetry as a 5, a 3...but i can't found more...

what is meant by the custodial SU(2) approximate symmetry as a 5, a 3? it is always mentioned in the Higgs triplet, charged higgs context.

I have another question. what is meant by the custodial SU(2) approximate symmetry as a 5, a 3?

creation and annihilation process? when two particle smash together they are annihilated at some point and exchange energy or momentum through virtual particle, after the they can create another new pair of particles depend on their probability. If higher energy is supplied, more massive...

How to get \frac{n(n+1)}{2}?

May I ask something else here? I saw somewhere mention about the physics model i.e SU(3)_c \times SU(2)_L \times SU(2)_R \times U(1)_{B-L} left right symmetry model...then they say the left handed doublet \psi_L(1,2,1,-1) what does the number (1,2,1,-1) mean? And what does the doublet or...

If a neutrino from outer space with energy $10^20eV$ have a elastic scattering with electron...do it have higher possibility for the W-propagator to decay into top quark?

thanks

Do anybody know where to get this journal online? Yad. Energia 4 (1976) 103...or it has another name in English?

i found some article http://prl.aps.org/abstract/PRL/v44/i8/p522_1...

or i ask in another way. Is that all experiment in measuring the lifetime of muon decay proceed by detecting the electron only? does anyone doing the experiment by detecting the neutrino it produced? or how do we really know that the \overline{\nu_e},\nu_\mu are produced in the...