1938年3月15日、宮城県にて生まれた[4]。中学生の頃は化学に興味を持っていたが、高校生になると物理学に関心を持つようになった[5]。また、数学の難しさに逆に興味をそそられるようになり、数学とかかわりの深い理論物理学の道を進もうと志す[5]。その後、東京大学に進学し、理学部の物理学科にて物理学を修めた[6]。1961年3月に東京大学を卒業すると、そのまま同大学の大学院に進学した[4][6]。大学院では数物系研究科に在籍し、1963年3月に修士課程を修了し、1966年3月に博士課程を修了した[1][4][6]。それにともない、理学博士の学位を授与された[1]。学位論文の題は「A new triangle relation for nonleptonic hyperon decay amplitudes as a consequence of the octet spurion and the R symmetry(オクテットスプーリオン及びR対称性の結果としての非軽粒子的な重核子崩壊の振幅に対する新しい三角形関係) 」[7]。
Hirotaka Sugawara, "Application of Current Commutation Rules to Nonleptonic Decay of Hyperons", Physical Review Letters, Vol.15, Issue 25, American Physical Society, December 20, 1965, pp.870–873. ISSN0031-9007
Hirotaka Sugawara and Frank von Hippel, "Zero-Parameter Model of the N-N Potential", Physical Review, Vol.172, Issue 5, American Physical Society, August 25, 1968, pp.1764–1788. ISSN0031-899X
Hirotaka Sugawara, "Theory of Currents-How to Break the Symmetry", Physical Review Letters, Vol.21, Issue 11, American Physical Society, September 9, 1968, pp.772–775. ISSN0031-9007
Jiro Arafune and Hirotaka Sugawara, "Breakdown of the Pomeranchuk Theorem and the Behavior of the Leading J-Plane Singularity", Physical Review Letters, Vol.25, Issue 21, American Physical Society, November 23, 1970, pp.1516–1518. ISSN0031-9007
Tohru Eguchi and Hirotaka Sugawara, "Extended model of elementary particles based on an analogy with superconductivity", Physical Review D, Vol.10, Issue 12, American Physical Society, December 15, 1974, pp.4257–4262. ISSN1550-7998
Hirotaka Sugawara, "Relativistic collective motion", Physical Review D, Vol.12, Issue 10, American Physical Society, November 15, 1975, pp.3272–3278. ISSN1550-7998
Sandip Pakvasa and Hirotaka Sugawara, "CP violation in the six-quark model", Physical Review D, Vol.14, Issue 1, American Physical Society, July 1, 1976, pp.305–308. ISSN1550-7998
Hirotaka Sugawara, "Theory of quark confinement based on an analogy with a theory of magnetic monopoles", Physical Review D, Vol.14, Issue 10, American Physical Society, November 15, 1976, pp.2764–2772. ISSN1550-7998
Sandip Pakvasa and Hirotaka Sugawara, "Evading the axion without massless quarks", Physical Review D, Vol.19, Issue 7, American Physical Society, April 1, 1979, pp.2225–2226. ISSN1550-7998
Hirotaka Sugawara, "Dynamical calculation of quark, lepton, and gauge-boson masses", Physical Review D, Vol.30, Issue 11, American Physical Society, December 1, 1984, pp.2396–2407. ISSN1550-7998
Hirotaka Sugawara, "String in curved space: Use of spinor representation of a noncompact group", Physical Review Letters, Vol.56, Issue 2, American Physical Society, January 13, 1986, pp.103–106. ISSN0031-9007
その他の執筆等
菅原寛孝稿「4 Non shrinking diffraction peak」『素粒子論研究』27巻4号、理論物理学刊行会、1963年6月20日、343-345頁。ISSN0371-1838