Mainz 2012 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 15: Hadronenstruktur und -spektroskopie

HK 15.3: Vortrag

Dienstag, 20. März 2012, 17:15–17:30, P 1

Parity-violating asymmetry in d(e^→,e)np and measurement of the axial vector form factor at Q²= 0.23 (GeV/c)² — •David Balaguer Rios — Institut für Kernphysik, Mainz, Deutschland

The A4 collaboration at the MAMI facilities has measured the parity-violating asymmetry in the quasi-elastic scattering of longitudinally polarized electron on deuteron at backward angles and at a four momentum transfer of Q²= 0.23 (GeV/c)². This measurement is sensitive to a linear combination of the strange magnetic vector form factor G_M^s and the axial form factor G_A. Combined with the measurement of the parity-violating asymmetry on proton at backwards and at the same four momentum transfer it allows the experimental determination of the axial form factor G_A.