We compute nonanalytical pion-loop corrections to baryon masses in a combined expansion in chiral symmetry breaking and 1 /N{sub}c, where N{sub}c is the number of colors. Specifically, we compute flavor-27 baryon mass splittings at leading order in chiral perturbation theory. Our results, at the physical value N{sub}c = 3, are compared with the expressions obtained in heavy baryon chiral perturbation theory with no 1/N{sub}c expansion.
展开▼
机译：在手性对称断裂中的组合扩展中，我们将非分析膜校正校正到Baryon块和1 / N {Sub} C中的膨胀群体，其中n {sub} c是颜色的数量。具体而言，在手性扰动理论中以领导顺序计算风味-27骨折质量分裂。我们的结果，在物理值n {sub} c = 3处，与在重的Baryon手术扰动理论中获得的表达式进行比较，没有1 / n {sub} C扩张。
展开▼
