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Within the framework of Standard Model, the exclusive decay mode $B\to \pi\gamma \gamma $ is studied. Although the usual short distance contribution issmall compared to the similar $B\to K\gamma\gamma$ mode, the process offers thepossibility of studying the CP violation, a feature absent in the $B \to K$counterpart.Comment: 11 page latex file including 2 ps figures. Typos corrected, minor  changes. To appear in PR

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

<i>CP</i>violation in the decay mode<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mrow><mml:mover><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mo>→</mml:mo></mml:mrow></mml:mover></mml:mrow></mml:mrow><mml:mi>π</mml:mi><mml:mi>γ</mml:mi><mml:mi>γ</mml:mi></mml:math>

CPviolation in the decay modeB→πγγ