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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Modification of the B meson mass in a magnetic field from QCD sum rules

Full text
Author(s):
Machado, C. S. [1] ; Matheus, R. D. [1] ; Finazzo, S. I. [2] ; Noronha, J. [2]
Total Authors: 4
Affiliation:
[1] Univ Estadual Paulista, Inst Fis Teor, BR-01140070 Barra Funda, SP - Brazil
[2] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Physical Review D; v. 89, n. 7 APR 10 2014.
Web of Science Citations: 25
Abstract

In this paper, we extend the well-known QCD sum rules used in the calculation of the mass of heavy mesons to estimate the modification of the charged B-meson mass, m(B), in the presence of an external Abelian magnetic field, eB. Two simplifying limits were considered: the weak field limit, in which the external field satisfies eB << m(2) (with m being any of the masses involved); and the strong field limit, in which the field strength is small in comparison to the bottom quark mass (or the B-meson mass) squared, but it is large compared to the mass of the light quarks, i.e., m(u,d)(2) << eB << m(b,B)(2). We found that m(B) decreases with the magnetic field in both of these limits. (AU)

FAPESP's process: 11/05619-3 - Charming mesons excited states
Grantee:Camila Sampaio Machado
Support type: Scholarships in Brazil - Master
FAPESP's process: 12/21627-9 - The leptonic sector in Quiver Gauge Theories: theory and phenomenology
Grantee:Camila Sampaio Machado
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 11/21691-6 - Understanding strongly coupled non-Abelian plasmas using the gauge/gravity duality
Grantee:Stefano Ivo Finazzo
Support type: Scholarships in Brazil - Doctorate