Solving a Particle Physics Problem: Hadron Quark Content and Identification

[neelakash]

Homework Statement

A hadron has the quark content $$\ u$$$$\ d^-$$.Find the baryaon number,charge,spin and strangeness of this hadron.Can you identify this hadron?

Homework Equations

The Attempt at a Solution

baryon number=(1/3)+(-1/3)=0 [u is particle but d bar is antiparticle]

charge= +(2/3)+(1/3)= +1 [dbar is the antiparticle of d,whose charge is -(1/3)]

Spin=0 [as the hadron is a meson]

Strangeness= 0

The hadron is a positive pion.

Please check if it is correct.

 

[Avodyne]

You're not given enough info to get the spin. The rho+ has the same quark content and has spin 1.