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We present quasi-elastic light scattering (LS) and dielectric (DS) spectra ofthe glass former alpha-picoline (13K < T < 320K). At high temperatures theevolution of the susceptibility minimum is well described by mode couplingtheory (MCT) yielding a critical temperature T_c = 162K +- 5K. At T_c > T > T_gthe excess wing of the alpha-process identified in the DS spectra andcharacterized by a power-law exponent c is rediscovered in the LS spectra.Introducing a universal evolution for c = c[lg(tau_{alpha})] as suggested by DSdata of several glass formers, the fast dynamics spectrum is singled out,allowing to determine the non-ergodicity parameter f(T). The latter shows thepredicted cusp-like anomaly identifying T_c as well. Another discontinuouschange of f(T) is observed at T_g. The fast dynamics spectra exhibit acrossover to ``white noise'' (T < T_c). Concerning the fast dynamics, weconclude that idealized MCT predictions hold even below T_c.Comment: 4 pages, 4 figures minor changes, misprints correcte

Anomaly of the Nonergodicity Parameter and Crossover to White Noise in the Fast Relaxation Spectrum of a Simple Glass Former