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The searches at LEP II for the processes e^+e^-\to h^0Z and e^+e^-\to h^0A^0in the Minimal Supersymmetric Standard Model (MSSM) fail to exclude regions ofthe m_h,m_A plane where \tan\beta <1, thus allowing a very light A^0 (m_A< 20GeV). Such a parameter choice would predict a light H^\pm with m_{H^\pm}< m_W.Although the potentially large branching ratio for H^\pm \to A^0 W^* wouldensure that H^\pm also escaped detection in direct searches at LEP II and theTevatron Run I, we show that this elusive parameter space is overwhelminglydisfavoured by electroweak precision measurements.Comment: 11 pages, 2 figures, Revtex, references added, minor additions to  tex

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

On the possibility of a very light<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>A</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>at low<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="normal">tan</mml:mi><mml:mi /><mml:mi>β</mml:mi></mml:math>in the minimal supersymmetric standard model

On the possibility of a very lightA0at lowtanβin the minimal supersymmetric standard model