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If you are seeking help with a...

Feb2313 08:41 AM
ZapperZ

1 
20,989 
God particle is 'found': Scientists at Cern expected to announce on Wednesday Higgs boson particle has been discovered...

Jul1112 01:13 AM
tom.stoer

178 
34,114 
Hi, I'm currently producing an undergraduate poster on CP violation and I have a few questions:
 Was K0 >...

Dec210 04:43 PM
ryanwilk

4 
1,170 
Hi, I'm currently carrying out a computer project on resonant scattering and I need to find literature values for the...

Mar211 04:30 PM
ryanwilk

0 
1,027 
Hi, this is probably pretty simple but it's puzzling me...
In neutrino oscillation, you produce and detect...

Sep613 07:12 PM
mfb

1 
925 
I have a very lamans understanding of particle accelerators, one of the things I gather is that their large size...

Feb714 06:54 PM
mfb

5 
625 
Hello all, I was just wondering if anyone could give me links to any websites that allow any one to post their own...

Jun812 02:25 AM
s.tovell

2 
1,122 
When more matter collides with less antimatter, is all of the antimatter and matter destroyed, or just equivalent...

Mar2511 08:13 PM
daumphys

22 
3,943 
Because of the existence of sterile neutrino, how and why it gives effect on the big bang nucleosynthesis more than...

Jan1108 04:10 PM
ZapperZ

3 
2,131 
i would like to ask a few questions about Neutrino oscillation
1) How can i calculate/obtain the mass eigenstates...

Nov712 08:26 AM
ofirg

3 
778 
I need to know the applications of nuclear fusion, Is there anybody who could help?

Mar806 06:41 AM
Astronuc

7 
2,011 
Hi all,
Can any one suggest me a nice topic for radioactive control of composite materials using low energy photons...

Nov1311 04:19 AM
Sada

0 
1,289 
One of the aims of the Large Hadron Collider is that it may be able to recreate conditions in the early universe and...

Oct711 04:12 AM
Saddlestone

3 
1,320 
Hi,
How can I calculate such terms
d^Aae d^ebD f^AaE f^EbD
d^Aae d^EbD f^AaE f^ebD
Cheers,

Mar913 05:45 AM
andrien

3 
891 
Hi all,
Has any one know how to calculate the loop function of Higgs decay to photons/ gluons by t quark , or a...

Apr1313 04:53 PM
Safinaz

4 
698 
Hi all,
I try to calculate the Higgs production cross section by Mathematica using
for example the formula in .
...

Aug313 04:36 AM
Safinaz

6 
1,103 
Hi all,
I'm not so expert in C++, but I try to make a a simple program to calculate
and plot the ttbar pair mass...

Sep1013 01:08 PM
Safinaz

4 
997 
Hi all,
Do any one use FeynRules .. I just start it and try to implement a vertex of one Gluon and two octet...

Oct1113 02:36 PM
Safinaz

0 
521 
Hi all,
I'd like to more understand what is the difference between when we draw the differential cross section
...

Oct2013 04:24 AM
Safinaz

0 
614 
Hi all,
Do any one know what is the spin correlation and what its relation to theNarrow Width Approximation.
...

Nov1713 04:11 PM
RGevo

1 
637 
Hi all,
I try to understand the difference which can made by using or not using NWA ..
I have a process have...

Nov2213 02:09 PM
Safinaz

2 
534 
Hi all,
I'd like to know what if we have a scatteing process A+B > C > E+D,
what is the relation between the width...

Dec913 12:43 PM
RGevo

4 
917 
Hi all,
why in SUSY we tend to use 2 components Weyl spinor field
not the ordinary Dirac filed ..
Regards,...

Nov2413 11:47 AM
dauto

3 
623 
Hi all,
Let me ask about what is meant that
Narrow width approximation has an error ~ ## \Gamma/m ##, is it mean...

Nov2513 08:04 AM
Safinaz

0 
512 
Hi all,
I'd like to know what is the integrated luminosity of CMS exp. Cern ?
Best,
S.

Dec313 12:39 PM
mfb

5 
685 
Hi all,
Could any one help for calculating the hadronc production cross section for example for
tree level : p p >...

Dec613 09:13 AM
ChrisVer

1 
865 
Hi all,
Is it not preferable to detect a particle at the LHC with final states of photons, that when I read
in...

Jan314 04:34 PM
mfb

1 
692 
Hi all,
There is a CMS (Cern) program in which can display similar to the attached figures, do any
one know what...

Jan2814 11:32 PM
Safinaz

3 
877 
Hi all,
I'd like to know how the chiral symmetry protect the electron mass in the oneloop calculation of the...

Y 03:10 PM
Safinaz

0 
138 
Hi,
The Gaisser parametrization is something like:
\Phi_0(E,\theta)=AE^{\gamma}\left
where...

Jul1613 05:22 PM
mfb

3 
790 
i need some primary information about nuclear potential.

Oct510 08:46 AM
inflector

3 
997 
can anyone please help me with the cluster decay defination

Nov910 09:37 AM
Rajini

1 
870 
Can anyone explain the meaning of strange and non strange current.i'm confused about the definition

Feb2011 03:38 AM
tom.stoer

1 
1,394 
Hello all,
lets think we have a segmented gammaray detector. when a gammaray interacts several segment of the...

Mar1209 02:50 PM
Bob S

1 
1,319 
Hello all the Physicist,
I would like to know
"current, exotic, trendy, popular, very important for catching...

Sep1412 07:05 AM
sakkoyun

0 
892 
hi
I have this question, I need your help:
If the photon had mass "m" , show that the Gauss' law would no...

May607 03:54 PM
Meir Achuz

1 
1,235 
I have this question
What is the typical nuclear density in g/cm^3 and in nucleon/F^3 ?
Thank you

Jun1607 07:30 AM
wayup06

3 
2,049 
Deuterium atom is an isotope of hydrogen e that is a fermion. Would it be correct the model the deuteron nucleus as...

May1513 02:33 PM
mathman

1 
653 
Can anyone help with interpretation of this energy level diagram for Lithium6 I found on internetit is from the...

Jun2310 03:18 PM
mathman

3 
2,822 
Does anyone have a reference for the details of energy and byproducts produced in an annihilation reaction of a...

Jun213 09:20 AM
mfb

1 
762 
I have a question.
From this government reference:
http://www.ncnr.nist.gov/resources/nlengths/
the...

Jul113 10:14 AM
Salman2

9 
1,297 
I have a question about cross section probability for a positron (e+) to interact with the electron (e) that would be...

Aug1413 06:35 AM
snorkack

9 
1,206 