Recent content by SBoh

Okay great. I am sorry but I have no idea what is the reason. Regarding your answer, effect of all possible scenarios that I can think of should be propagated into cross section difference, where cross sections are calculated using MC method with error depending on number of generated events.

There are several point from me. 1) Please provide information such as is this proton-proton collision, at what center-of-mass energy, at which level you produced histograms (matrix element level, after parton shower with specific particle status number, ...), at which perturbation order (LO in...

First of all, high order magnets are used for transverse direction focus of particle beams. It means that magnets are used to "constrain particles in transverse direction". (The interesting point is that different setting of such magnets are required depending on particle beam energy due to the...

Hi, these are interesting questions. 1) H to gg -FD ? Same with gg to H production. Gluon radiations through quark triangle. -Why BR(H to gamma gamma) << BR(H to gg)? There is another factor, the coupling constant. You can compare alpha_s (~ 0.1) and alpha_em (~1/137) to understand difference...

It reminds me Heisenberg's neutron model, which assumed neutron as composite state of proton and electron. Of course, the model was failed by his own the uncertainty principle. Energy of beta decay electrons is too low compared to required energy to bind electron in size of neutron. (dx is very...

C is multiplicative quantum number. So, once you know C of a single pion, you just need to perform C^n for n pions system. It is same for P. So, C(pion)^n P(pion)^n (-1)^L is total CP eigenvalue. If you ask how we can know C or P eigenvalue of single particle such as pion, I would answer that we...

π+ π- π0's CP is(-1)(-1)^(L). So, two pions and three pions have opposite CP eigenvalues. Therefore, observation of both K_{0 L} to two pions and three pions decays is clue of CP violation.

Hi everyone, I am working on high energy physics experiment using the CMS data at the LHC. I hope fruitful knowledge exchange in this community. Thanks, SBoh.