assumed to be at rest. 
  

<p/><code>parm&nbsp; </code><strong> Beams:eB &nbsp;</strong> 
 (<code>default = <strong>7000.</strong></code>; <code>minimum = 0.</code>)<br/>
The energy of the second incoming particle, moving in the 
<i>-z</i> direction, to be set if <code>Beams:frameType</code> = 2. 
If the particle energy is smaller than its mass
it is assumed to be at rest.
  

<p/><code>parm&nbsp; </code><strong> Beams:pxA &nbsp;</strong> 
 (<code>default = <strong>0.</strong></code>)<br/>
The <i>p_x</i> c