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| sci.physics.research | Current physics research. (Moderated) | 17,516 messages |
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| Message 15,678 of 17,516 |
| Hendrik van Hees to Lawrence Crowell |
| Re: What is the ratio of gluons to baryo |
| 26 Jun 17 22:24:02 |
From: hees@fias.uni-frankfurt.de
On 25/06/17 09:26, Lawrence Crowell wrote:
>
> The Mandelstam variables are s, t, u. Often the transverse momentum
> in a high energy process is referred to as sqrt{s}.
> LC
Usually sqrt(s) is the center-momentum energy of the process. If p_1
and p_2 are the four-momenta of the incoming particles, then
s=(p_1+p_2)^2 (I use the west-coast convention of the Minkowski metric
with signature (+---)).
--
Hendrik van Hees
Goethe University (Institute for Theoretical Physics)
D-60438 Frankfurt am Main
http://fias.uni-frankfurt.de/~hees/
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