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Revision as of 19:29, 2 May 2008

welcome! Count Iblis (talk) 23:44, 1 May 2008 (UTC)[reply]

"LIST OF BARYONS" SECTION UNDER CONSTRUCTION:

Relation between isospin and up and down quark content

The third component of isospin for the up quark is 1⁄2, for the down quark it is - 1⁄2, and it is zero for the other quarks. The third component of isospin for a baryon is simply the sum of that of its quarks. Different baryons that have the same constituent quarks are distinguishable by their other characteristics (like spin).

Particles of isospin 3⁄2 can only be made by a mixture of three u and d quarks (Δs):

The four
Δ
s are:

Δ⁺⁺
(uuu) with Iz = 3⁄2

Δ⁺
(uud) with Iz = 1⁄2

Δ⁰
(udd) with Iz = - 1⁄2

Δ⁻
(ddd) with Iz = - 3⁄2

Particles of isospin 1 are made of one c, s, or b quark together with two u quarks or two d quarks or a u and a d quark (Σs).

The nine
Σ
s are:

Σ⁺
(uus),
Σ⁰
(uds),
Σ⁺
(dds),

Σ⁺⁺
_c (uuc),
Σ⁺
_c (udc),
Σ⁰
_c (ddc),

Σ⁺
_b (uub),
Σ⁰
_b (udb),
Σ⁻
_b (ddb)

Particles of isospin 1⁄2 can be made of two u quarks and one d quark, or two d quarks and one u quark (Ns).

The two
N
s are:

p⁺
(uud),
n⁰
(udd)

They can also be made of a combination of two c, s, or b quarks together with one u or d quark (Ξs).

The twelve
Ξ
s are:

Ξ⁰
(uss),
Ξ⁻
(dss),

Ξ⁺
_c (usc),
Ξ⁰
_c (dsc),

Ξ⁺⁺
_cc (ucc),
Ξ⁺
_cc (dcc),

Ξ⁰
_b (usb),
Ξ⁻
_b (dsb),

Ξ⁺
_cb (ucb),
Ξ⁰
_cb (dcb),

Ξ⁰
_bb (ubb),
Ξ⁻
_bb (dbb)

Particles of isospin 0 can be made two unaligned u and d quarks (Λs), or of no u or d quarks at all (Ωs):

The three
Λ
s are:

Λ⁰
(uds),

Λ⁺
_c (udc),

Λ⁰
_b (udb)

The ten
Ω
s are:

Ω⁻
(sss),
Ω⁰
_c (ssc),
Ω⁺
_cc (scc),
Ω⁻
_b (ssb),
Ω⁰
_cb (scb),
Ω⁻
_bb (sbb)

Ω⁺⁺
_ccc (ccc},
Ω⁺
_ccb (ccb),
Ω⁰
_cbb (cbb),

Ω⁻
_bbb (bbb)

@@ Line 1: / Line 1: @@
- welcome! <!-- Template:Welcome -->  [[User:Count Iblis|Count Iblis]] ([[User talk:Count Iblis|talk]]) 23:44, 1 May 2008 (UTC)
+welcome! <!-- Template:Welcome -->  [[User:Count Iblis|Count Iblis]] ([[User talk:Count Iblis|talk]]) 23:44, 1 May 2008 (UTC)
@@ Line 17: / Line 17: @@
 Particles of isospin {{frac|3|2}} can only be made by a mixture of three  u and d quarks (&Delta;s):
 *The four {{SubatomicParticle|link=yes|Delta}}s are:
-:{{SubatomicParticle|Delta++}} (uuu)  with Iz = {{frac|3|2}}
+{{SubatomicParticle|Delta++}} (uuu)  with Iz = {{frac|3|2}}<br />
-{{SubatomicParticle|Delta+}} (uud) with Iz =  {{frac|1|2}}
+{{SubatomicParticle|Delta+}} (uud) with Iz =  {{frac|1|2}}<br />
-{{SubatomicParticle|Delta0}} (udd) with iz = -  {{frac|1|2}}
+{{SubatomicParticle|Delta0}} (udd) with Iz = -  {{frac|1|2}}<br />
- {{SubatomicParticle|Delta-}} (ddd) with iz = - {{frac|3|2}}<br />
+{{SubatomicParticle|Delta-}} (ddd) with Iz = - {{frac|3|2}}<br />
+<br />
+<br />
 Particles of isospin 1 are made of one c, s, or b quark together with two u quarks or two d quarks or a u and a d quark (&Sigma;s).
 *The nine {{SubatomicParticle|link=yes|Sigma}}s are:
@@ Line 26: / Line 28: @@
 :{{SubatomicParticle|Charmed Sigma++}} (uuc), {{SubatomicParticle|Charmed Sigma+}} (udc), {{SubatomicParticle|Charmed Sigma0}} (ddc),
 :{{SubatomicParticle|Bottom Sigma+}} (uub), {{SubatomicParticle|Bottom Sigma0}} (udb), {{SubatomicParticle|Bottom Sigma-}} (ddb)
+<br />
-Particles of isospin {{frac|1|2}} can be made of two u quarks and one d quark, or two d quarks and one u quark  (Ns). They can also be made of a combination of two c, s, or b quarks together with one u or d quark (&Xi;s).
+<br />
+Particles of isospin {{frac|1|2}} can be made of two u quarks and one d quark, or two d quarks and one u quark  (Ns).<br />
 *The two {{SubatomicParticle|link=yes|Nucleon}}s are:
-: {{SubatomicParticle|Proton+}} (uud), {{SubatomicParticle|Neutron0}} (udd)
+: {{SubatomicParticle|Proton+}} (uud), {{SubatomicParticle|Neutron0}} (udd)<br />
+They can also be made of a combination of two c, s, or b quarks together with one u or d quark (&Xi;s).<br />
 *The twelve {{SubatomicParticle|link=yes|Xi}}s are:
 :{{SubatomicParticle|Xi0}} (uss), {{SubatomicParticle|Xi-}} (dss),