介子列表
介子由一个夸克和一个反夸克组成的不稳定亚原子粒子的列表。它们是强子的一种。强子的另一个成员是重子,由三个夸克组成的亚原子粒子。介子和重子的主要区别在于介子具有整数自旋(因此是玻色子),而重子是费米子(半整数自旋)。因为介子是玻色子,泡利不相容原理不适用于它们。因此,它们可以在短距离内充当作用力的中介粒子,从而在核相互作用等过程中发挥作用。

由于介子是由夸克组成的,它们既参与弱相互作用,也参与强相互作用。带净电荷的介子也参与了电磁相互作用。它们根据夸克含量、总角动量、宇称和各种其他性质(如C-宇称和G-宇称)进行分类。虽然没有介子是稳定的,但质量较低的介子比质量最大的介子更稳定,在粒子加速器或宇宙射线实验中更容易观察和研究。它们通常比重子质量小,这意味着它们在实验中更容易产生,并且比重子更快地表现出更高的能量现象。例如,1974年在J/ψ介子中发现魅夸克 ,1977年在ϒ介子中发现底夸克。
每个介子都有一个对应的反粒子(反介子),夸克被相应的反夸克取代,反之亦然。例如,一个正介子(π+)是由一个上夸克和一个反下夸克组成的;它对应的反粒子,负介子(π-)由一个反上夸克和一个下夸克组成。一些实验显示了四夸克介子的证据,由两个夸克和两个反夸克组成的奇异介子,但粒子物理学整体上认为它们的存在是可能的。
介子列表
下面列出了所有已知和预测的赝标介子和矢量介子的详细信息。
本列表並未列出反介子。然而,它們只是將所有夸克換成對應的反夸克,並將Q、B、S、C、B′等數值變號。名称旁边有†的粒子已由标准模型预测,但尚未观察到。红色的数值并没有通过实验确定,而是通过夸克模型预测出来的,并且与测量结果一致。
在本列表中的符號有:I(同位旋)、J(總角動量量子數)、P(宇稱,表示座標系鏡像變換時特徵值的奇偶性)、C(C-宇稱)、G(G-宇稱)、u(上夸克)、d(下夸克)、s(奇夸克)、c(粲夸克)、b(底夸克)、Q(電荷)、B(重子数)、 S(奇异数)、C(粲数)、B′(底數)以及多種次原子粒子。
赝标介子
JP = 0-介子
| 粒子名稱 | 粒子 符号 | 反粒子 符号 | 夸克組成 | 静止质量 (MeV/c2) | IG | JPC | S | C | B' | 平均生命期 (s) | 通常衰變至 (>5%的衰變) | 
|---|---|---|---|---|---|---|---|---|---|---|---|
| π介子 | π+ | π− | u d | 139.57018±0.00035 | 1− | 0− | 0 | 0 | 0 | (2.6033±0.0005)×10−8 | μ+ + ν μ | 
| π介子 | π0 | Self | 134.9766±0.0006 | 1− | 0−+ | 0 | 0 | 0 | (8.52±0.18)×10−17 | γ + γ | |
| η介子 | η | Self | 547.862±0.018 | 0+ | 0−+ | 0 | 0 | 0 | (5.02±0.19)×10−19 | γ
 + γ
 or π0 + π0 + π0 or | |
| η素介子 | η′ (958) | Self | 957.78±0.06 | 0+ | 0−+ | 0 | 0 | 0 | (3.32±0.15)×10−21 | π+ + π− + η or | |
| η粲介子 | η c (1S) | Self | c c | 2983.6±0.7 | 0+ | 0−+ | 0 | 0 | 0 | (2.04±0.05)×10−23 | http://pdg.lbl.gov/2010/listings/rpp2010-list-eta-c-1S.pdf(页面存档备份,存于) | 
| η底介子 | η b (1S) | Self | b b | 9398.0±3.2 | 0+ | 0−+ | 0 | 0 | 0 | Unknown | http://pdg.lbl.gov/2014/listings/rpp2014-list-eta-b-1S.pdf(页面存档备份,存于) | 
| K介子 | K+ | K− | u s | 493.677±0.016 | 1⁄2 | 0− | 1 | 0 | 0 | (1.2380±0.0021)×10−8 | μ+ + ν μ or | 
| K介子 | K0 | K0 | d s | 497.614±0.024 | 1⁄2 | 0− | 1 | 0 | 0 | ||
| 短寿命K介子 | K0 S | Self | 497.614±0.024 | 1⁄2 | 0− | (*) | 0 | 0 | (8.954±0.004)×10−11 | π+ + π− or | |
| 长寿命K介子 | K0 L | Self | 497.614±0.024 | 1⁄2 | 0− | (*) | 0 | 0 | (5.116±0.021)×10−8 | π± + e∓ + ν e or π± + μ∓ + ν μ or | |
| D介子 | D+ | D− | c d | 1869.61±0.10 | 1⁄2 | 0− | 0 | +1 | 0 | (1.040±0.007)×10−12 | http://pdg.lbl.gov/2014/listings/rpp2014-list-D-plus-minus.pdf(页面存档备份,存于) | 
| D介子 | D0 | D0 | c u | 1864.84±0.07 | 1⁄2 | 0− | 0 | +1 | 0 | (4.101±0.015)×10−13 | http://pdg.lbl.gov/2014/listings/rpp2014-list-D-zero.pdf(页面存档备份,存于) | 
| 奇D介子 | D+ s | D− s | c s | 1968.30±0.11 | 0 | 0− | +1 | +1 | 0 | (5.00±0.07)×10−13 | http://pdg.lbl.gov/2014/listings/rpp2014-list-Ds-plus-minus.pdf(页面存档备份,存于) | 
| B介子 | B+ | B− | u b | 5279.26±0.17 | 1⁄2 | 0− | 0 | 0 | +1 | (1.638±0.004)×10−12 | http://pdg.lbl.gov/2014/listings/rpp2014-list-B-plus-minus.pdf(页面存档备份,存于) | 
| B介子 | B0 | B0 | d b | 5279.58±0.17 | 1⁄2 | 0− | 0 | 0 | +1 | (1.519±0.009)×10−12 | http://pdg.lbl.gov/2014/listings/rpp2014-list-B-zero.pdf(页面存档备份,存于) | 
| 奇B介子 | B0 s | B0 s | s b | 5366.77±0.24 | 0 | 0− | −1 | 0 | +1 | (1.512±0.007)×10−12 | http://pdg.lbl.gov/2014/listings/rpp2014-list-Bs-zero.pdf(页面存档备份,存于) | 
| 粲B介子 | B+ c | B− c | c b | 6275.6±1.1 | 0 | 0− | 0 | +1 | +1 | (4.52±0.33)×10−13 | http://pdg.lbl.gov/2014/listings/rpp2014-list-Bc-plus-minus.pdf(页面存档备份,存于) | 
 ^  由于非零夸克质量而产生的补偿不精确。
 ^  此處根據粒子數據組(PDG)所給出的共振寬度(Γ)值,使用生命期τ = ħΓ 轉換求得。
 ^ 强本征态,没有确定的寿命。
 ^  The mass of the K0
L and K0
S are given as that of the K0
. However, it is known that a difference between the masses of the K0
L and K0
S on the order of 2.2×10−11 MeV/c2 exists.
 ^ Weak eigenstate. Makeup is missing small CP–violating term (see notes on neutral kaons below).
矢量介子
JP = 1-介子
| 粒子名稱 | 粒子 符号 | 反粒子 符号 | 夸克組成 | 静止质量 (MeV/c2) | IG | JPC | S | C | B' | 平均生命期 (s) | 通常衰變至 (>5%的衰變) | 
|---|---|---|---|---|---|---|---|---|---|---|---|
| ρ介子 | ρ+ (770) | ρ− (770) | u d | 775.11±0.34 | 1+ | 1− | 0 | 0 | 0 | (4.41±0.02)×10−24 | π± + π0 | 
| ρ介子 | ρ0 (770) | Self | 775.26±0.25 | 1+ | 1−− | 0 | 0 | 0 | (4.45±0.03)×10−24 | π+ + π− | |
| ω介子 | ω (782) | Self | 782.65±0.12 | 0− | 1−− | 0 | 0 | 0 | (7.75±0.07)×10−23 | π+ + π0 + π− or | |
| φ介子 | φ (1020) | Self | s s | 1019.461±0.019 | 0− | 1−− | 0 | 0 | 0 | (1.54±0.01)×10−22 | K+ + K− or K0 S + K0 L or (ρ + π ) / (π+ + π0 + π− ) | 
| J/ψ介子 | J/ψ | Self | c c | 3096.916±0.011 | 0− | 1−− | 0 | 0 | 0 | (7.09±0.21)×10−21 | http://pdg.lbl.gov/2014/listings/rpp2014-list-J-psi-1S.pdf(页面存档备份,存于) | 
| ϒ介子 | ϒ (1S) | Self | b b | 9460.30±0.26 | 0− | 1−− | 0 | 0 | 0 | (1.22±0.03)×10−20 | http://pdg.lbl.gov/2014/listings/rpp2014-list-upsilon-1S.pdf(页面存档备份,存于) | 
| K介子 | K∗+ | K∗− | u s | 891.66±0.026 | 1⁄2 | 1− | 1 | 0 | 0 | (3.26±0.06)×10−23 | http://pdg.lbl.gov/2014/listings/rpp2014-list-K-star-892.pdf(页面存档备份,存于) | 
| K介子 | K∗0 | K∗0 | d s | 895.81±0.19 | 1⁄2 | 1− | 1 | 0 | 0 | (1.39±0.02)×10−23 | http://pdg.lbl.gov/2014/listings/rpp2014-list-K-star-892.pdf(页面存档备份,存于) | 
| D介子 | D∗+ (2010) | D∗− (2010) | c d | 2010.26±0.07 | 1⁄2 | 1− | 0 | +1 | 0 | (7.89±0.17)×10−21 | D0 + π+ or D+ + π0 | 
| D介子 | D∗0 (2007) | D∗0 (2007) | c u | 2006.96±0.10 | 1⁄2 | 1− | 0 | +1 | 0 | >3.1×10−22 | D0 + π0 or D0 + γ | 
| 奇D介子 | D∗+ s | D∗− s | c s | 2112.1±0.4 | 0 | 1− | +1 | +1 | 0 | >3.4×10−22 | D∗+ + γ or D∗+ + π0 | 
| B介子 | B∗+ | B∗− | u b | 5325.2±0.4 | 1⁄2 | 1− | 0 | 0 | +1 | Unknown | B+ + γ | 
| B介子 | B∗0 | B∗0 | d b | 5325.2±0.4 | 1⁄2 | 1− | 0 | 0 | +1 | Unknown | B0 + γ | 
| 奇B介子 | B∗0 s | B∗0 s | s b | 5415.4+2.4 −2.1 | 0 | 1− | −1 | 0 | +1 | Unknown | B0 s +γ | 
| 粲B介子† | B∗+ c | B∗− c | c b | Unknown | 0 | 1− | 0 | +1 | +1 | Unknown | Unknown | 
 ^  此處根據粒子數據組(PDG)所給出的共振寬度(Γ)值,使用生命期τ = ħΓ 轉換求得。 
 ^  精确值取决于所用的方法,详见给定参考。
介子共振粒子
因为这个表最初是从公布的结果中推导出来的,其中许多结果是初步的,所以下表中多达64个介子可能不存在,或者质量或量子数错误。
| Light unflavoured (S=C=B=0) | Strange (S=±1, C=B=0) | Charmed, strange (C=S=±1) | cc | ||||||
|---|---|---|---|---|---|---|---|---|---|
| IG(JPC) | IG(JPC) | IG(JP) | IG(JP) | IG(JPC) | |||||
| π± | 1−(0−) | φ(1680) | 0−(1−−) | K± | 1⁄2(0−) | D± s | 0(0−) | η c(1S) | 0+(0−+) | 
| π0 | 1−(0−+) | ρ 3(1690) | 1+(3−−) | K0 | 1⁄2(0−) | D*± s | 0(??) | J/ψ(1S) | 0−(1−−) | 
| η | 0+(0−+) | ρ(1700) | 1+(1−−) | K0 S | 1⁄2(0−) | D* s0(2317)± | 0(0+) | χ c0(1P) | 0+(0++) | 
| f 0(500) | 0+(0++) | a 2(1700) | 1−(2++) | K0 L | 1⁄2(0−) | D s1(2460)± | 0(1+) | χ c1(1P) | 0+(1++) | 
| ρ(770) | 1+(1−−) | f0(1710) | 0+(0++) | K* 0(800) | 1⁄2(0+) | D s1(2536)± | 0(1+) | h c(1P) | ??(1+−) | 
| ω(782) | 0−(1−−) | η(1760) | 0+(0−+) | K*(892) | 1⁄2(1−) | D s2(2573) | 0(??) | χ c2(1P) | 0+(2++) | 
| η′ (958) | 0+(0−+) | π(1800) | 1−(0−+) | K 1(1270) | 1⁄2(1+) | D* s1(2700)± | 0(1−) | η c(2S) | 0+(0−+) | 
| f 0(980) | 0+(0++) | f 2(1810) | 0+(2++) | K 1(1400) | 1⁄2(1+) | D* sJ(2860)± | 0(??) | ψ(2S) | 0−(1−−) | 
| a 0(980) | 1−(0++) | X(1835) | ??(?−+) | K*(1410) | 1⁄2(1−) | D sJ(3040)± | 0(??) | ψ(3770) | 0−(1−−) | 
| φ(1020) | 0−(1−−) | X(1840) | ??(???) | K* 0(1430) | 1⁄2(0+) | Bottom (B=±1) | X(3823) | ??(??−) | |
| h 1(1170) | 0−(1+−) | φ 3(1850) | 0−(3−−) | K* 2(1430) | 1⁄2(2+) | X(3872) | 0+(1++) | ||
| b 1(1235) | 1+(1+−) | η 2(1870) | 0+(2−+) | K(1460) | 1⁄2(0−) | B± | 1⁄2(0−) | X(3900)± | ?(1+) | 
| a 1(1260) | 1−(1++) | π 2(1880) | 1−(2−+) | K 2(1580) | 1⁄2(2−) | B0 | 1⁄2(0−) | X(3900)0 | ?(??) | 
| f 2(1270) | 0+(2++) | ρ(1900) | 1+(1−−) | K(1630) | 1⁄2(??) | B±/B0 Admixture | χ c0(2P) | 0+(0++) | |
| f 1(1285) | 0+(1++) | f 2(1910) | 0+(2++) | K 1(1650) | 1⁄2(1+) | B±/B0/B0 s/b-baryon Admixture | χ c2(2P) | 0+(2++) | |
| η(1295) | 0+(0−+) | f 2(1950) | 0+(2++) | K*(1680) | 1⁄2(1−) | X(3940) | ??(???) | ||
| π(1300) | 1−(0−+) | ρ 3(1990) | 1+(3−−) | K 2(1770) | 1⁄2(2−) | Vcb and Vub CKM Matrix Admixture | X(4020)± | ?(??) | |
| a 2(1320) | 1−(2++) | f 2(2010) | 0+(2++) | K* 3(1780) | 1⁄2(3−) | ψ(4040) | 0−(1−−) | ||
| f 0(1370) | 0+(0++) | f 0(2020) | 0+(0++) | K 2(1820) | 1⁄2(2−) | B* | 1⁄2(1−) | X(4050)± | ?(??) | 
| h 1(1380) | ?−(1+−) | a 4(2040) | 1−(4++) | K(1830) | 1⁄2(0−) | B* J(5732) | ?(??) | X(4140) | 0+(??+) | 
| π 1(1400) | 1−(1−+) | f 4(2050) | 0+(4++) | K* 0(1950) | 1⁄2(0+) | B 1(5721)0 | 1⁄2(1+) | ψ(4160) | 0−(1−−) | 
| η(1405) | 0+(0−+) | π 2(2100) | 1−(2−+) | K* 2(1980) | 1⁄2(2+) | B* 1(5721)0 | 1⁄2(2+) | X(4160) | ??(???) | 
| f 1(1420) | 0+(1++) | f 0(2100) | 0+(0++) | K* 0(2045) | 1⁄2(4+) | Bottom, strange (B=±1, S=∓1) | X(4250)± | ?(??) | |
| ω(1420) | 0−(1−−) | f 2(2150) | 0+(2++) | K 2(2250) | 1⁄2(2−) | X(4260) | ??(1−−) | ||
| f 2(1430) | 0+(2++) | ρ(2150) | 1+(1−−) | K 3(2320) | 1⁄2(3+) | B0 s | 0(0−) | X(4350) | 0+(??+) | 
| a 0(1450) | 1−(0++) | φ(2170) | 0−(1−−) | K* 5(2380) | 1⁄2(5−) | B* s | 0(1−) | X(4360) | ??(1−−) | 
| ρ(1450) | 1+(1−−) | f 0(2200) | 0+(0++) | k 4(2500) | 1⁄2(4−) | B s1(5830)0 | 0(1+) | ψ(4415) | 0−(1−−) | 
| η(1475) | 0+(0−+) | fJ(2200) | 0+(2++ or 4++) | K(3100) | ??(???) | B* s2(5840)0 | 0(2+) | X(4430)± | ?(1+) | 
| f 0(1500) | 0+(0++) | Charmed (C=±1) | B* sJ(5850) | ?(??) | X(4660) | ??(1−−) | |||
| f 1(1510) | 0+(1++) | η(2225) | 0+(0−+) | Bottom, charmed (B=C=±1) | bb | ||||
| f′ 1(1525) | 0+(2++) | ρ 3(2250) | 1+(3−−) | D± | 1⁄2(0−) | η b(1S) | 0+(0−+) | ||
| f 2(1565) | 0+(2++) | f2(2300) | 0+(2++) | D0 | 1⁄2(0−) | B± c | 0(0−) | Υ(1S) | 0−(1−−) | 
| ρ(1570) | 1+(1−−) | f 4(2300) | 0+(4++) | D*(2007)0 | 1⁄2(1−) | χ b0(1P) | 0+(0++) | ||
| h 1(1595) | 0−(1+−) | f 0(2330) | 0+(0++) | D*(2010)± | 1⁄2(1−) | χ b1(1P) | 0+(1++) | ||
| π 1(1600) | 1−(1−+) | f 2(2340) | 0+(2++) | D* 0(2400)0 | 1⁄2(0+) | χ b0(2P) | 0+(0++) | ||
| a 1(1640) | 1−(1++) | ρ 5(2350) | 1+(5−−) | D* 0(2400)± | 1⁄2(0+) | h b(1P) | ??(1+−) | ||
| f 2(1640) | 0+(2++) | a 6(2450) | 1−(6++) | D 1(2420)0 | 1⁄2(1+) | χ b2(1P) | 0+(2++) | ||
| η 2(1645) | 0+(2−+) | f 6(2510) | 0+(6++) | D 1(2420)± | 1⁄2(??) | η b(2S) | 0+(0−+) | ||
| ω(1650) | 0−(1−−) | Other Light | D 1(2430)0 | 1⁄2(1+) | Υ(2S) | 0−(1−−) | |||
| ω 3(1670) | 0−(3−−) | Further States | D* 2(2460)0 | 1⁄2(2+) | Υ(1D) | 0−(2−−) | |||
| π 2(1670) | 1−(2−+) | D* 2(2460)± | 1⁄2(2+) | χ b0(2P) | 0+(0++) | ||||
| D(2550)0 | 1⁄2(0−) | χ b1(2P) | 0+(1++) | ||||||
| D(2600) | 1⁄2(??) | h b(2P) | ??(1+−) | ||||||
| D*(2640)± | 1⁄2(??) | χ b2(2P) | 0+(2++) | ||||||
| D(2750) | 1⁄2(??) | Υ(3S) | 0−(1−−) | ||||||
| χ b(3P) | ??(??+) | ||||||||
| Υ(4S) | 0−(1−−) | ||||||||
| X(10610)± | 1+(1+) | ||||||||
| X(10610)0 | 1+(1+) | ||||||||
| X(10650)± | ?+(1+) | ||||||||
| Υ(10860) | 0−(1−−) | ||||||||
| Υ(11020) | 0−(1−−) | ||||||||
赝标介子
JP = 0-介子
| 粒子名稱 | 粒子 符号 | 反粒子 符号 | 夸克組成 | 静止质量 (MeV/c2) | IG | JPC | S | C | B' | 平均生命期 (s) | 通常衰變至 (>5%的衰變) | 
|---|---|---|---|---|---|---|---|---|---|---|---|
| π介子 | π+ | π− | u d | 139.57018±0.00035 | 1− | 0− | 0 | 0 | 0 | (2.6033±0.0005)×10−8 | μ+ + ν μ | 
| π介子 | π0 | Self | 134.9766±0.0006 | 1− | 0−+ | 0 | 0 | 0 | (8.52±0.18)×10−17 | γ + γ | |
| η介子 | η | Self | 547.862±0.018 | 0+ | 0−+ | 0 | 0 | 0 | (5.02±0.19)×10−19 | γ
 + γ
 or π0 + π0 + π0 or | |
| η素介子 | η′ (958) | Self | 957.78±0.06 | 0+ | 0−+ | 0 | 0 | 0 | (3.32±0.15)×10−21 | π+ + π− + η or | |
| η粲介子 | η c (1S) | Self | c c | 2983.6±0.7 | 0+ | 0−+ | 0 | 0 | 0 | (2.04±0.05)×10−23 | http://pdg.lbl.gov/2010/listings/rpp2010-list-eta-c-1S.pdf(页面存档备份,存于) | 
| η底介子 | η b (1S) | Self | b b | 9398.0±3.2 | 0+ | 0−+ | 0 | 0 | 0 | Unknown | http://pdg.lbl.gov/2014/listings/rpp2014-list-eta-b-1S.pdf(页面存档备份,存于) | 
| K介子 | K+ | K− | u s | 493.677±0.016 | 1⁄2 | 0− | 1 | 0 | 0 | (1.2380±0.0021)×10−8 | μ+ + ν μ or | 
| K介子 | K0 | K0 | d s | 497.614±0.024 | 1⁄2 | 0− | 1 | 0 | 0 | ||
| 短寿命K介子 | K0 S | Self | 497.614±0.024 | 1⁄2 | 0− | (*) | 0 | 0 | (8.954±0.004)×10−11 | π+ + π− or | |
| 长寿命K介子 | K0 L | Self | 497.614±0.024 | 1⁄2 | 0− | (*) | 0 | 0 | (5.116±0.021)×10−8 | π± + e∓ + ν e or π± + μ∓ + ν μ or | |
| D介子 | D+ | D− | c d | 1869.61±0.10 | 1⁄2 | 0− | 0 | +1 | 0 | (1.040±0.007)×10−12 | http://pdg.lbl.gov/2014/listings/rpp2014-list-D-plus-minus.pdf(页面存档备份,存于) | 
| D介子 | D0 | D0 | c u | 1864.84±0.07 | 1⁄2 | 0− | 0 | +1 | 0 | (4.101±0.015)×10−13 | http://pdg.lbl.gov/2014/listings/rpp2014-list-D-zero.pdf(页面存档备份,存于) | 
| 奇D介子 | D+ s | D− s | c s | 1968.30±0.11 | 0 | 0− | +1 | +1 | 0 | (5.00±0.07)×10−13 | http://pdg.lbl.gov/2014/listings/rpp2014-list-Ds-plus-minus.pdf(页面存档备份,存于) | 
| B介子 | B+ | B− | u b | 5279.26±0.17 | 1⁄2 | 0− | 0 | 0 | +1 | (1.638±0.004)×10−12 | http://pdg.lbl.gov/2014/listings/rpp2014-list-B-plus-minus.pdf(页面存档备份,存于) | 
| B介子 | B0 | B0 | d b | 5279.58±0.17 | 1⁄2 | 0− | 0 | 0 | +1 | (1.519±0.009)×10−12 | http://pdg.lbl.gov/2014/listings/rpp2014-list-B-zero.pdf(页面存档备份,存于) | 
| 奇B介子 | B0 s | B0 s | s b | 5366.77±0.24 | 0 | 0− | −1 | 0 | +1 | (1.512±0.007)×10−12 | http://pdg.lbl.gov/2014/listings/rpp2014-list-Bs-zero.pdf(页面存档备份,存于) | 
| 粲B介子 | B+ c | B− c | c b | 6275.6±1.1 | 0 | 0− | 0 | +1 | +1 | (4.52±0.33)×10−13 | http://pdg.lbl.gov/2014/listings/rpp2014-list-Bc-plus-minus.pdf(页面存档备份,存于) | 
 ^  由于非零夸克质量而产生的补偿不精确。
 ^  此處根據粒子數據組(PDG)所給出的共振寬度(Γ)值,使用生命期τ = ħΓ 轉換求得。
 ^ 强本征态,没有确定的寿命。
 ^  The mass of the K0
L and K0
S are given as that of the K0
. However, it is known that a difference between the masses of the K0
L and K0
S on the order of 2.2×10−11 MeV/c2 exists.
 ^ Weak eigenstate. Makeup is missing small CP–violating term (see notes on neutral kaons below).
矢量介子
JP = 1-介子
| 粒子名稱 | 粒子 符号 | 反粒子 符号 | 夸克組成 | 静止质量 (MeV/c2) | IG | JPC | S | C | B' | 平均生命期 (s) | 通常衰變至 (>5%的衰變) | 
|---|---|---|---|---|---|---|---|---|---|---|---|
| ρ介子 | ρ+ (770) | ρ− (770) | u d | 775.11±0.34 | 1+ | 1− | 0 | 0 | 0 | (4.41±0.02)×10−24 | π± + π0 | 
| ρ介子 | ρ0 (770) | Self | 775.26±0.25 | 1+ | 1−− | 0 | 0 | 0 | (4.45±0.03)×10−24 | π+ + π− | |
| ω介子 | ω (782) | Self | 782.65±0.12 | 0− | 1−− | 0 | 0 | 0 | (7.75±0.07)×10−23 | π+ + π0 + π− or | |
| φ介子 | φ (1020) | Self | s s | 1019.461±0.019 | 0− | 1−− | 0 | 0 | 0 | (1.54±0.01)×10−22 | K+ + K− or K0 S + K0 L or (ρ + π ) / (π+ + π0 + π− ) | 
| J/ψ介子 | J/ψ | Self | c c | 3096.916±0.011 | 0− | 1−− | 0 | 0 | 0 | (7.09±0.21)×10−21 | http://pdg.lbl.gov/2014/listings/rpp2014-list-J-psi-1S.pdf(页面存档备份,存于) | 
| ϒ介子 | ϒ (1S) | Self | b b | 9460.30±0.26 | 0− | 1−− | 0 | 0 | 0 | (1.22±0.03)×10−20 | http://pdg.lbl.gov/2014/listings/rpp2014-list-upsilon-1S.pdf(页面存档备份,存于) | 
| K介子 | K∗+ | K∗− | u s | 891.66±0.026 | 1⁄2 | 1− | 1 | 0 | 0 | (3.26±0.06)×10−23 | http://pdg.lbl.gov/2014/listings/rpp2014-list-K-star-892.pdf(页面存档备份,存于) | 
| K介子 | K∗0 | K∗0 | d s | 895.81±0.19 | 1⁄2 | 1− | 1 | 0 | 0 | (1.39±0.02)×10−23 | http://pdg.lbl.gov/2014/listings/rpp2014-list-K-star-892.pdf(页面存档备份,存于) | 
| D介子 | D∗+ (2010) | D∗− (2010) | c d | 2010.26±0.07 | 1⁄2 | 1− | 0 | +1 | 0 | (7.89±0.17)×10−21 | D0 + π+ or D+ + π0 | 
| D介子 | D∗0 (2007) | D∗0 (2007) | c u | 2006.96±0.10 | 1⁄2 | 1− | 0 | +1 | 0 | >3.1×10−22 | D0 + π0 or D0 + γ | 
| 奇D介子 | D∗+ s | D∗− s | c s | 2112.1±0.4 | 0 | 1− | +1 | +1 | 0 | >3.4×10−22 | D∗+ + γ or D∗+ + π0 | 
| B介子 | B∗+ | B∗− | u b | 5325.2±0.4 | 1⁄2 | 1− | 0 | 0 | +1 | Unknown | B+ + γ | 
| B介子 | B∗0 | B∗0 | d b | 5325.2±0.4 | 1⁄2 | 1− | 0 | 0 | +1 | Unknown | B0 + γ | 
| 奇B介子 | B∗0 s | B∗0 s | s b | 5415.4+2.4 −2.1 | 0 | 1− | −1 | 0 | +1 | Unknown | B0 s +γ | 
| 粲B介子† | B∗+ c | B∗− c | c b | Unknown | 0 | 1− | 0 | +1 | +1 | Unknown | Unknown | 
 ^  此處根據粒子數據組(PDG)所給出的共振寬度(Γ)值,使用生命期τ = ħΓ 轉換求得。 
 ^  精确值取决于所用的方法,详见给定参考。
介子共振粒子
因为这个表最初是从公布的结果中推导出来的,其中许多结果是初步的,所以下表中多达64个介子可能不存在,或者质量或量子数错误。
| Light unflavoured (S=C=B=0) | Strange (S=±1, C=B=0) | Charmed, strange (C=S=±1) | cc | ||||||
|---|---|---|---|---|---|---|---|---|---|
| IG(JPC) | IG(JPC) | IG(JP) | IG(JP) | IG(JPC) | |||||
| π± | 1−(0−) | φ(1680) | 0−(1−−) | K± | 1⁄2(0−) | D± s | 0(0−) | η c(1S) | 0+(0−+) | 
| π0 | 1−(0−+) | ρ 3(1690) | 1+(3−−) | K0 | 1⁄2(0−) | D*± s | 0(??) | J/ψ(1S) | 0−(1−−) | 
| η | 0+(0−+) | ρ(1700) | 1+(1−−) | K0 S | 1⁄2(0−) | D* s0(2317)± | 0(0+) | χ c0(1P) | 0+(0++) | 
| f 0(500) | 0+(0++) | a 2(1700) | 1−(2++) | K0 L | 1⁄2(0−) | D s1(2460)± | 0(1+) | χ c1(1P) | 0+(1++) | 
| ρ(770) | 1+(1−−) | f0(1710) | 0+(0++) | K* 0(800) | 1⁄2(0+) | D s1(2536)± | 0(1+) | h c(1P) | ??(1+−) | 
| ω(782) | 0−(1−−) | η(1760) | 0+(0−+) | K*(892) | 1⁄2(1−) | D s2(2573) | 0(??) | χ c2(1P) | 0+(2++) | 
| η′ (958) | 0+(0−+) | π(1800) | 1−(0−+) | K 1(1270) | 1⁄2(1+) | D* s1(2700)± | 0(1−) | η c(2S) | 0+(0−+) | 
| f 0(980) | 0+(0++) | f 2(1810) | 0+(2++) | K 1(1400) | 1⁄2(1+) | D* sJ(2860)± | 0(??) | ψ(2S) | 0−(1−−) | 
| a 0(980) | 1−(0++) | X(1835) | ??(?−+) | K*(1410) | 1⁄2(1−) | D sJ(3040)± | 0(??) | ψ(3770) | 0−(1−−) | 
| φ(1020) | 0−(1−−) | X(1840) | ??(???) | K* 0(1430) | 1⁄2(0+) | Bottom (B=±1) | X(3823) | ??(??−) | |
| h 1(1170) | 0−(1+−) | φ 3(1850) | 0−(3−−) | K* 2(1430) | 1⁄2(2+) | X(3872) | 0+(1++) | ||
| b 1(1235) | 1+(1+−) | η 2(1870) | 0+(2−+) | K(1460) | 1⁄2(0−) | B± | 1⁄2(0−) | X(3900)± | ?(1+) | 
| a 1(1260) | 1−(1++) | π 2(1880) | 1−(2−+) | K 2(1580) | 1⁄2(2−) | B0 | 1⁄2(0−) | X(3900)0 | ?(??) | 
| f 2(1270) | 0+(2++) | ρ(1900) | 1+(1−−) | K(1630) | 1⁄2(??) | B±/B0 Admixture | χ c0(2P) | 0+(0++) | |
| f 1(1285) | 0+(1++) | f 2(1910) | 0+(2++) | K 1(1650) | 1⁄2(1+) | B±/B0/B0 s/b-baryon Admixture | χ c2(2P) | 0+(2++) | |
| η(1295) | 0+(0−+) | f 2(1950) | 0+(2++) | K*(1680) | 1⁄2(1−) | X(3940) | ??(???) | ||
| π(1300) | 1−(0−+) | ρ 3(1990) | 1+(3−−) | K 2(1770) | 1⁄2(2−) | Vcb and Vub CKM Matrix Admixture | X(4020)± | ?(??) | |
| a 2(1320) | 1−(2++) | f 2(2010) | 0+(2++) | K* 3(1780) | 1⁄2(3−) | ψ(4040) | 0−(1−−) | ||
| f 0(1370) | 0+(0++) | f 0(2020) | 0+(0++) | K 2(1820) | 1⁄2(2−) | B* | 1⁄2(1−) | X(4050)± | ?(??) | 
| h 1(1380) | ?−(1+−) | a 4(2040) | 1−(4++) | K(1830) | 1⁄2(0−) | B* J(5732) | ?(??) | X(4140) | 0+(??+) | 
| π 1(1400) | 1−(1−+) | f 4(2050) | 0+(4++) | K* 0(1950) | 1⁄2(0+) | B 1(5721)0 | 1⁄2(1+) | ψ(4160) | 0−(1−−) | 
| η(1405) | 0+(0−+) | π 2(2100) | 1−(2−+) | K* 2(1980) | 1⁄2(2+) | B* 1(5721)0 | 1⁄2(2+) | X(4160) | ??(???) | 
| f 1(1420) | 0+(1++) | f 0(2100) | 0+(0++) | K* 0(2045) | 1⁄2(4+) | Bottom, strange (B=±1, S=∓1) | X(4250)± | ?(??) | |
| ω(1420) | 0−(1−−) | f 2(2150) | 0+(2++) | K 2(2250) | 1⁄2(2−) | X(4260) | ??(1−−) | ||
| f 2(1430) | 0+(2++) | ρ(2150) | 1+(1−−) | K 3(2320) | 1⁄2(3+) | B0 s | 0(0−) | X(4350) | 0+(??+) | 
| a 0(1450) | 1−(0++) | φ(2170) | 0−(1−−) | K* 5(2380) | 1⁄2(5−) | B* s | 0(1−) | X(4360) | ??(1−−) | 
| ρ(1450) | 1+(1−−) | f 0(2200) | 0+(0++) | k 4(2500) | 1⁄2(4−) | B s1(5830)0 | 0(1+) | ψ(4415) | 0−(1−−) | 
| η(1475) | 0+(0−+) | fJ(2200) | 0+(2++ or 4++) | K(3100) | ??(???) | B* s2(5840)0 | 0(2+) | X(4430)± | ?(1+) | 
| f 0(1500) | 0+(0++) | Charmed (C=±1) | B* sJ(5850) | ?(??) | X(4660) | ??(1−−) | |||
| f 1(1510) | 0+(1++) | η(2225) | 0+(0−+) | Bottom, charmed (B=C=±1) | bb | ||||
| f′ 1(1525) | 0+(2++) | ρ 3(2250) | 1+(3−−) | D± | 1⁄2(0−) | η b(1S) | 0+(0−+) | ||
| f 2(1565) | 0+(2++) | f2(2300) | 0+(2++) | D0 | 1⁄2(0−) | B± c | 0(0−) | Υ(1S) | 0−(1−−) | 
| ρ(1570) | 1+(1−−) | f 4(2300) | 0+(4++) | D*(2007)0 | 1⁄2(1−) | χ b0(1P) | 0+(0++) | ||
| h 1(1595) | 0−(1+−) | f 0(2330) | 0+(0++) | D*(2010)± | 1⁄2(1−) | χ b1(1P) | 0+(1++) | ||
| π 1(1600) | 1−(1−+) | f 2(2340) | 0+(2++) | D* 0(2400)0 | 1⁄2(0+) | χ b0(2P) | 0+(0++) | ||
| a 1(1640) | 1−(1++) | ρ 5(2350) | 1+(5−−) | D* 0(2400)± | 1⁄2(0+) | h b(1P) | ??(1+−) | ||
| f 2(1640) | 0+(2++) | a 6(2450) | 1−(6++) | D 1(2420)0 | 1⁄2(1+) | χ b2(1P) | 0+(2++) | ||
| η 2(1645) | 0+(2−+) | f 6(2510) | 0+(6++) | D 1(2420)± | 1⁄2(??) | η b(2S) | 0+(0−+) | ||
| ω(1650) | 0−(1−−) | Other Light | D 1(2430)0 | 1⁄2(1+) | Υ(2S) | 0−(1−−) | |||
| ω 3(1670) | 0−(3−−) | Further States | D* 2(2460)0 | 1⁄2(2+) | Υ(1D) | 0−(2−−) | |||
| π 2(1670) | 1−(2−+) | D* 2(2460)± | 1⁄2(2+) | χ b0(2P) | 0+(0++) | ||||
| D(2550)0 | 1⁄2(0−) | χ b1(2P) | 0+(1++) | ||||||
| D(2600) | 1⁄2(??) | h b(2P) | ??(1+−) | ||||||
| D*(2640)± | 1⁄2(??) | χ b2(2P) | 0+(2++) | ||||||
| D(2750) | 1⁄2(??) | Υ(3S) | 0−(1−−) | ||||||
| χ b(3P) | ??(??+) | ||||||||
| Υ(4S) | 0−(1−−) | ||||||||
| X(10610)± | 1+(1+) | ||||||||
| X(10610)0 | 1+(1+) | ||||||||
| X(10650)± | ?+(1+) | ||||||||
| Υ(10860) | 0−(1−−) | ||||||||
| Υ(11020) | 0−(1−−) | ||||||||
參考文獻
引用
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引用
- J.J. Aubert et al. (1974)
- J.E. Augustin et al. (1974)
- S.W. Herb et al. (1977)
- C. Amsler et al. (2008): Charmonium States (页面存档备份,存于)
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – π±
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – π0
- K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – η
- K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – η′
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – η
 c
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – η
 b
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – K±
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – K0
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – K0
 S
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – K0
 L
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – D±
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – D0
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – D±
 s
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – B±
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – B0
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – B0
 s
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – B±
 c
- K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – ρ
- K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – ω(782)
- K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – φ
- K.A. Olive et al. (2014): Particle listings – J/Ψ (页面存档备份,存于)
- K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – ϒ(1S)
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – K∗
 (892)
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – D∗±
 (2010)
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – D∗0
 (2007)
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – D∗±
 s
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – B∗
-  K.A. Olive et al. (2014): (页面存档备份,存于) (页面存档备份,存于) Particle listings – B∗
 s
- K.A. Olive et al. (2014): Meson Summary Table (页面存档备份,存于)
来源
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外部链接
- Particle Data Group – The Review of Particle Physics (2008)(页面存档备份,存于)
- Mesons made thinkable(页面存档备份,存于), an interactive visualisation allowing physical properties to be compared
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