Model calculations of the Sivers function satisfying the Burkardt sum rule
نویسنده
چکیده
A. Courtoy, S. Scopetta, V. Vento 1 Departament de Fisica Teòrica, Universitat de València, and Institut de Fisica Corpuscular, Consejo Superior de Investigaciones Cient́ıficas, 46100 Burjassot (València), Spain 2 Dipartimento di Fisica, Università degli Studi di Perugia, and INFN sezione di Perugia, via A. Pascoli 06100 Perugia, Italy Abstract It is shown that, at variance with previous analyses, the MIT bag model can explain the available data of the Sivers function and satisfies the Burkardt Sum Rule to a few percent accuracy. The agreement is similar to the one recently found in the constituent quark model. Therefore, these two model calculations of the Sivers function are in agreement with the present experimental and theoretical wisdom.
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