Talk:Kaon

The history of the discovery of parity violation has been moved from this article to that. Bambaiah 13:28, Jun 19, 2005 (UTC)

Is the list of quarks in each kaon correct? I can't get the charge to work out. I believe the correct listing is:

K⁺: strange antiquark, up quark

K^-: strange quark, up antiquark

K⁰: strange antiquark, down quark

K⁰bar: strange quark, down antiquark

This is indeed correct.

Kaon decay

I'm pretty sure that most decay products at the list "properties of kaons" where leptons are involved are wrong. For example where it says K+ decays into mu+ and the mu-antineutrino. This can't be right since both have a lepton-number of -1...

- Jakob R —Preceding unsigned comment added by 212.114.238.93 (talk) 14:25, 27 March 2009 (UTC)

mean squared charge radius ?

What's a "mean squared charge radius"? Can we link it to something? RJFJR (talk) 22:26, 11 November 2008 (UTC)

K_L and K_S

These are strictly speaking not eigenstates of anything (they are not stable particles) but propagating states. Also, the quark makeup that is listed is for the CP eigenstates K_1 and K_2, which is only approximately equal to the propagating states K_L, K_S. —Preceding unsigned comment added by 129.240.86.72 (talk) 16:40, 10 June 2009 (UTC)

"Kappa meson" or "kappa particle"

Unless I am mistaken, the term kappa meson (κ-meson) was the historical designation for this set of particles. This was for consistency with the convention of using Greek letters for particles, such as α-particle, β-particle. The term seems to have fallen into desuetude, but is still occasionally encountered. I am guessing that κ was replaced by K because the Greek LC glyph and the the Latin UC glyph are visually nearly indistinguishable, not to mention the fact that the study of classical languages has fallen away. The π-meson (pion) seems partially to have escaped this fate; and the μ-meson (muon) is no longer classified as a meson at all.

Anyway, I think the synonym at least deserves a redirect and a note in the article. Not so?

--Ziusudra (talk) 19:36, 22 November 2009 (UTC)

Got a reference for this? Headbomb {^ταλκ_{κοντριβς} – WP Physics} 23:29, 24 November 2009 (UTC)

I don't know when the term was proposed or the particle discovered, but it may have been by Glashow & Weinberg. I seem to remember hearing about "pi mesons" and "kappa mesons" in a physics class in 1961, but memory can play tricks. For a historical use, see Peter Hertel's "On the lifetime of the kappa meson", Zeitschrift für Physik Volume 211, Number 5 / October, 1968, reprinted 2005 by Springer Verlag. A reference apparently dating from 2003 is found here. Finally Dictionary.com defines "kappa-meson" as "noun: an unstable meson produced as the result of a high-energy particle collision [syn: kaon]". --Ziusudra (talk) 15:16, 25 November 2009 (UTC)

Hadron overhaul

Please give input at Talk:Hadron#Hadron overhaul. Thanks. Headbomb {^ταλκ_{κοντριβς} – WP Physics} 02:00, 24 January 2010 (UTC)

Neutral kaon mixing

The K0 K0bar mixing diagram is wrong. K0 is down antistrange. They're labeled backwards, contradicting their quark content stated in the table at the top of the page. Zestfulclough (talk) 10:51, 23 May 2010 (UTC)

Indeed. I changed the caption to match the diagram, but it should really be the diagram that gets changed (and the text reverted) —Preceding unsigned comment added by 88.104.54.248 (talk) 01:31, 17 June 2010 (UTC)

Mixing

Either the description of the two eigenvectors Ksub1 as the sum of two states and Ksub2 as the difference appears to be contrary to that shown in the table entitled Properties of Kaons in the Basic Properties section; or the later suggestion that KS=K1 and KL=K2 is the wrong way around. Which way should it be? George963 au (talk) 16:48, 9 September 2010 (UTC)