✦ LIBER ✦
Problems with conventional sum rule analyses for the light quark masses and a new analysis of ms
✍ Scribed by K. Maltman; R. Gupta; T. Bhattacharya
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 282 KB
- Volume
- 631
- Category
- Article
- ISSN
- 0375-9474
No coin nor oath required. For personal study only.
✦ Synopsis
In what follows, we explore existing sum rule analyses of the u, d and s quark masses. We argue that certain assumptions about the behavior of unmeasured continuum scalar and pseudoscalar spectral functions can lead to significant overestimates of these masses, and illustrate the source of the problem in the analogous isovector vector channel. A new analysis for the strange quark mass verifies the existence of these problems in the previous analyses.