[ X(3872) JPC = 1++ ] The LHCb Collaboration presented today at the Rencontres de Physique de la Vallée d’Aoste, La Thuile, Italy, an important result which makes the exotic nature of the X(3872) particle very probable. In the quark model of particle physics proposed in 1964 by Murray Gell-Mann and George Zweig mesons, like…