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From: gwyn@brl-tgr.ARPA (Doug Gwyn <gwyn>)
Newsgroups: net.physics
Subject: Re: Do Positrons Have Negative Mass?
Message-ID: <967@brl-tgr.ARPA>
Date: Sun, 25-Aug-85 22:00:47 EDT
Article-I.D.: brl-tgr.967
Posted: Sun Aug 25 22:00:47 1985
Date-Received: Wed, 28-Aug-85 02:18:59 EDT
References: <636@astrovax.UUCP>
Organization: Ballistic Research Lab
Lines: 5

> 	There is a theorem of particle physics which states that all
> particles with a negative mass travel backwards in time.  ...
> All this comes from charge, parity, and time symmetry arguements.

How do you relate mass to CPT?