High Quality Content by WIKIPEDIA articles! In high energy physics, a vector meson is a meson with total spin 1 and odd parity (usually noted as JP = 1?). Compare to a pseudovector meson, which has a total spin 1 and even parity. Vector mesons have been seen in experiments since the 1960s, and are well known for their spectroscopic pattern of masses. Since the development of the quark model by Murray Gell-Mann (and independently by George Zweig as well), the vector mesons have demonstrated the spectroscopy of pure states. The fact that the I = 1 rho meson (

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