Talk:Pion

message: My understanding is that a pion is composed of a quark and an antiquark of the same color, for example, a red up quark and a red antidown quark. But both quarks are red (they have to be to give overall white color). But there appears to be no mention of color in the text, which seems like a serious omission. Not only that, but the animation shows pions composed of two different colors, which appears to be wrong. Andrewthomas10 (talk) 13:51, 21 October 2015 (UTC)
replies: text: Your understanding is wrong. It is composed of a quark of a color and an antiquark of the anticolor of the quark. Think of it as a Color charge and its anticharge, the meson is color neutral. The representation of antiblue as yellow, antigreen as magenta and antired as cyan is one option for that. It gives the "white" color (via additive color mixing).  — Preceding unsigned comment added by 147.142.17.186 (talk) 17:18, 23 February 2017 (UTC)
thread_title: Problems about color

message: Please give input at Talk:Hadron#Hadron overhaul. Thanks. Headbomb {ταλκκοντριβς – WP Physics} 01:59, 24 January 2010 (UTC)
thread_title:  Hadron overhaul 

message: The artcle begins with:
:In particle physics, a pion (short for pi meson; denoted ) is any of three subatomic particles:  (often 0),  and . Pions are the lightest mesons and play an important role in explaining low-energy properties of the strong nuclear force.
What does the parenthesis in  (often 0) signify? Although the zero is added through a different mechanism, the text displayed is identical. It ends up looking like apple (often apple), which adds no information. I know absolutely nothing about the subject of this article, but if there is important information in  (often 0), someone needs to clarify for ignorant laymen like me what the difference is between  and 0.--Jim10701 (talk) 16:53, 22 July 2010 (UTC)
thread_title:  {{SubatomicParticle|Pion0}} (often {{SubatomicParticle|Pion}}<sup>0</sup>) 

message: The usage of Π is under discussion, see Talk:Pi. 65.93.12.101 (talk) 01:29, 4 April 2011 (UTC)
thread_title: &pi; (pi)

message: Lists new values for 
*mean-life
*decay-modes
http://pdg.lbl.gov/2011/listings/rpp2011-list-pi-zero.pdf
do we have a go to update these values
Abyssoft (talk) 17:52, 27 July 2011 (UTC)
thread_title: New reference for &pi;<sup>(+0-)</sup> 

message: The text mentions the pion as a pseudo-Nambu-Goldstone boson, however the linked article is to Goldstone boson.  This is somewhat confusing, as I believe the this obscures the pseudoscalar implications.  — Preceding unsigned comment added by 70.247.168.41 (talk) 13:17, 8 May 2015 (UTC)
thread_title:  pseudo-Nambu-Goldstone boson? 

message: The explanation of the helicity suppression indicates that it is caused by parity violation, i.e. the coupling to left-handed particles and right-handed anti-particles. 
Supposed the weak interaction would conserve parity, i.e. it couples with the same probability to left-handed and right-handed particles. The vector-line structure of the interaction (W has Spin 1) forces a coupling to a left-handed particle and a right handed particle at a given vertex.  Thus, the helicity suppression in the pion decay is caused by the vector-like structure of the interaction plus conservation of angular momentum. Pen88 (talk) 16:41, 7 September 2016 (UTC)
thread_title:  Helicity suppression 

message: Lack of spin 2600:100F:B1B8:A729:0:36:90BF:BF01 (talk) 22:02, 19 December 2023 (UTC)
thread_title:  What about spin?