Reconciling the analytic QCD with the ITEP operator product expansion philosophy

Cvetic G, Kögerler R, Valenzuela C (2010)
Physical Review D 82(11): 114004.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Cvetic, Gorazd; Kögerler, ReinhartUniBi; Valenzuela, Cristian
Abstract / Bemerkung
Analytic QCD models are those versions of QCD in which the running coupling parameter a(Q(2)) has the same analytic properties as the spacelike physical quantities, i.e., no singularities in the complex Q(2) plane except on the timelike semiaxis. In such models, a(Q(2)) usually differs from its perturbative analog by power terms similar to(Lambda(2)/Q(2))(k) for large momenta, introducing thus nonperturbative terms similar to(Lambda(2)/Q(2))(k) in spacelike physical quantities whose origin is the UV regime. Consequently, it contradicts the ITEP operator product expansion philosophy which states that such terms can come only from the IR regimes. We investigate whether it is possible to construct analytic QCD models which respect the aforementioned ITEP philosophy and, at the same time, reproduce not just the high-energy QCD observables, but also the low-energy ones, among them the well-measured semihadronic tau decay ratio.
Erscheinungsjahr
2010
Zeitschriftentitel
Physical Review D
Band
82
Ausgabe
11
Art.-Nr.
114004
ISSN
1550-7998
eISSN
1550-2368
Page URI
https://pub.uni-bielefeld.de/record/2003298

Zitieren

Cvetic G, Kögerler R, Valenzuela C. Reconciling the analytic QCD with the ITEP operator product expansion philosophy. Physical Review D. 2010;82(11): 114004.
Cvetic, G., Kögerler, R., & Valenzuela, C. (2010). Reconciling the analytic QCD with the ITEP operator product expansion philosophy. Physical Review D, 82(11), 114004. https://doi.org/10.1103/PhysRevD.82.114004
Cvetic, G., Kögerler, R., and Valenzuela, C. (2010). Reconciling the analytic QCD with the ITEP operator product expansion philosophy. Physical Review D 82:114004.
Cvetic, G., Kögerler, R., & Valenzuela, C., 2010. Reconciling the analytic QCD with the ITEP operator product expansion philosophy. Physical Review D, 82(11): 114004.
G. Cvetic, R. Kögerler, and C. Valenzuela, “Reconciling the analytic QCD with the ITEP operator product expansion philosophy”, Physical Review D, vol. 82, 2010, : 114004.
Cvetic, G., Kögerler, R., Valenzuela, C.: Reconciling the analytic QCD with the ITEP operator product expansion philosophy. Physical Review D. 82, : 114004 (2010).
Cvetic, Gorazd, Kögerler, Reinhart, and Valenzuela, Cristian. “Reconciling the analytic QCD with the ITEP operator product expansion philosophy”. Physical Review D 82.11 (2010): 114004.

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arXiv: 1006.4199

Inspire: 859162

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