PIERRE A. PIROUÉ, professor emeritus of physics, died Feb. 12 in Princeton. He was 88. Piroué arrived at the University in 1956 as a graduate student and joined the faculty in 1961 after earning his doctorate from the University of Geneva. He later became the Henry DeWolf Smyth Professor of Physics and transferred to emeritus status in 2001. He taught two of the largest courses in the department, General Physics I and II. An expert in particle physics, his research helped lead to key breakthroughs, including the discovery of the Higgs boson in 2012.