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Talk:Pseudorapidity

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The table should be extended to

{Relation to rapidity in limit} The following statement: "...in the approximation that the mass of the particle is nearly zero, pseudorapidity is numerically close to the experimental particle physicist's definition of rapidity" is too vague. In this limit pseudorapidity _equals_ rapidity. Just plug in m=0 in the formula — Preceding unsigned comment added by 83.89.32.26 (talk) 19:17, 16 May 2012 (UTC)[reply]

{Correction} If one express

while the longitudinal and trasversal components of momentum are

and

the result for is

— Preceding unsigned comment added by 200.1.26.102 (talk) 18:54, 29 April 2013 (UTC)[reply]

Hyperbolic geometry

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This article is about an application of angle of parallelism, a key metric concept in hyperbolic geometry. The equations find the angle of parallelism based on a leg of an ideal triangle in the hyperbolic plane. Today the reference to Chiochia was added, but we need a reference that tells how the particle scientists came to exploit hyperbolic geometry this way. — Rgdboer (talk) 22:01, 6 October 2015 (UTC)[reply]