Comment on theS01Nucleon-Nucleon Effective-Range Expansion Parameters

Slac-pub-969 Comment of the ‘so Nucleon-nucleon Effective Range Expansion Pai&meters*

aw = -23.715 f 0.015 FM r = 2.73 h 0.03 FM w Unless strong theoretical arguments can be advanced that all chargedependent corrections to the parameters can be calculated accurately enough to prove that the values of arm, r,,, or r must be moved w outside these limits, or strong experimental reasons given to believe that experiments leading to these results were significantly in error, it is arg...

investigation of effective parameters on the rigidity of light composite diaphragms (psscb) by fem

در این رساله با معرفی سقف های psscb متشکل از ترکیب ورق های فولادی ذوزنقه ای و تخته های سیمانی الیافی به عنوان سقف های پیش ساخته (سازگار با سیستم سازه ای قاب های فولادی سبک) به بررسی پارامترهای موثر بر صلبیت سقف، پرداخته می شود. در تحقیق حاضر ابتدا به مدل سازی دو نمونه سقف آزمایش شده، به روش اجزاء محدود با استفاده از نرم افزار تحلیلی abaqus ver 6.10 پرداخته شده است. نمونه های ساخته شده تحت اعما...

Perturbative Pions and the Effective Range Expansion

In this talk the Q counting scheme to implement effective field theory is discussed. It is pointed out that there are two small mass scales in the problem mπ and 1/a with 1/a ≪ mπ. It is argued that while the expansion based on 1/a being small compared to the underlying short distance scales works well, the chiral expansion may not. The coefficients of the effective range expansion are sensitiv...

Comment on "Nucleon-nucleon scattering lengths in QCD sum rules"

In a recent Letter [1], Kondo and Morimatsu present a QCD sum rule calculation of nucleon-nucleon scattering lengths. They also relate the empirical scattering lengths to the nucleon mass shift δM in nuclear matter to cast doubt on the " linear density approximation. " In this Comment, we point out flaws in both parts of their analysis. It is useful to start with the (nonrelativistic) optical p...

Comment on "measurement of two- and three-nucleon short-range correlation probabilities in nuclei".