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Pregled bibliografske jedinice broj: 990282

On some implications of the BaBar data on the γ⁎η′transition form factor


Kroll, Peter; Passek-Kumerički, Kornelija
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 ) ( POIROT)

Ustanove:
Institut "Ruđer Bošković", Zagreb

Citiraj ovu publikaciju:

Kroll, Peter; Passek-Kumerički, Kornelija
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)
Kroll, P. & Passek-Kumerički, K. (2019) On some implications of the BaBar data on the γ⁎η′transition form factor. Physics letters. B, 793, 195-199 doi:10.1016/j.physletb.2019.04.054.
@article{article, author = {Kroll, Peter and Passek-Kumeri\v{c}ki, Kornelija}, year = {2019}, pages = {195-199}, DOI = {10.1016/j.physletb.2019.04.054}, keywords = {hard exclusive processes, perturbative QCD, meson transition form factors, eta mesons}, journal = {Physics letters. B}, doi = {10.1016/j.physletb.2019.04.054}, volume = {793}, issn = {0370-2693}, title = {On some implications of the BaBar data on the γ⁎η′transition form factor}, keyword = {hard exclusive processes, perturbative QCD, meson transition form factors, eta mesons} }
@article{article, author = {Kroll, Peter and Passek-Kumeri\v{c}ki, Kornelija}, year = {2019}, pages = {195-199}, DOI = {10.1016/j.physletb.2019.04.054}, keywords = {hard exclusive processes, perturbative QCD, meson transition form factors, eta mesons}, journal = {Physics letters. B}, doi = {10.1016/j.physletb.2019.04.054}, volume = {793}, issn = {0370-2693}, title = {On some implications of the BaBar data on the γ⁎η′transition form factor}, keyword = {hard exclusive processes, perturbative QCD, meson transition form factors, eta mesons} }

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


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