Pregled bibliografske jedinice broj: 990282
On some implications of the BaBar data on the γ⁎η′transition form factor
On some implications of the BaBar data on the γ⁎η′transition form factor // Physics letters. B, 793 (2019), 195-199 doi:10.1016/j.physletb.2019.04.054 (međunarodna recenzija, članak, znanstveni)
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Naslov
On some implications of the BaBar data on the γ⁎η′transition form factor
Autori
Kroll, Peter ; Passek-Kumerički, Kornelija
Izvornik
Physics letters. B (0370-2693) 793
(2019);
195-199
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
hard exclusive processes ; perturbative QCD ; meson transition form factors ; eta mesons
Sažetak
At leading-twist accuracy the form factors for the transitions from a virtual photon to the η or η′ can be expanded into a power series of the variable omega, being related to the difference of two photon virtualities. The series possess the remarkable feature that only the Gegenbauer coefficients of the meson distribution amplitudes of order l ≤ m contribute to the term ∼ omega^m. Thus, for omega → 0 only the asymptotic meson distribution amplitude contributes, allowing for a test of the mixing of the η and η′ decay constants. Employing the Gegenbauer coefficients determined in analysis of the form factors in the real photon limit, we present predictions for the gamma⁎η eta and gamma η′ form factors and compare them to the BaBar data.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
POVEZANOST RADA
Projekti:
EK-EFRR-KK.01.1.1.06.0006 - Sinergijom do uspjeha: RBI-T-WINNING i ESIF udruženi u jačanju izvrsnosti Zavoda za teorijsku fiziku Instituta Ruđer Bošković (RBI-TWINN-SIN) (Melić, Blaženka, EK ) ( CroRIS)
Ustanove:
Institut "Ruđer Bošković", Zagreb
Profili:
Kornelija Passek-Kumerički
(autor)
Poveznice na cjeloviti tekst rada:
Pristup cjelovitom tekstu rada doi inspirehep.net www.sciencedirect.com arxiv.org doi.org fulir.irb.hrCitiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus