Quark Index

For detailed calculations, it is often convenient to use a number to represent different quark classes. So an ordinary quark that is composed from a thermodynamic seed Z

$\sf{z} = \{ \, \sf{Z}, \sf{O} \, \}$

and its associated anti-quark

$\bar{\sf{z}} = \{ \, \sf{Z}, \bar{\sf{O}} \, \}$

are occasionally refered to using a number represented by the Greek letter ζ as shown in the table below. When used like this, zeta is called the quark index. This number also identifies the thermodynamic seed Z. The two particles $\sf{z}$ and $\bar{\sf{z}}$ are sometimes collectively called ζ-type or Z-type quarks. These notations are helpful when using summation notation in formulae.

 Twenty Dragon Tampan (detail) Paminggir people. Lampung region of Sumatra 19th century, 65 x 81 cm. From the library of Darwin Sjamsudin, Jakarta. Photograph by D Dunlop.
 Index Seed Quarks ζ Z z z 1 U u u 2 D d d 3 E e e 4 G g g 5 M m m 6 A a a 7 T t t 8 B b b 9 S s s 10 C c c

 Noun Definition Quark Index $\sf{\text{A number representing quark class. }}$ 3-55
page revision: 147, last edited: 06 Mar 2016 20:11