Principal-component analysis of two-particle azimuthal correlations in PbPb and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>p</mml:mi><mml:mtext>Pb</mml:mtext></mml:mrow></mml:math> collisions at CMS
Physical review. C