Search for a low-mass pseudoscalar Higgs boson produced in association with a <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:mi mathvariant="normal">b</mml:mi><mml:mover accent="true"><mml:mrow><mml:mi mathvariant="normal">b</mml:mi></mml:mrow><mml:mo>‾</mml:mo></mml:mover></mml:math> pair in pp collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si128.gif" overflow="scroll"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><…
Physics letters. B