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Scientific paper - Original scientific paper
The double radiative annihilation of the heavy-light fermion bound states
Fizika B, 10 (2001), 1; 285-306. urn:nbn:hr:217:424525
Eeg, Jan O.; Kumerički, Krešimir; Picek, Ivica

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Eeg, J. O., Kumerički, K. & Picek, I. (2001). The double radiative annihilation of the heavy-light fermion bound states. Fizika B, 10. (1), 285-306. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:424525

Eeg, Jan O., et al. "The double radiative annihilation of the heavy-light fermion bound states." Fizika B, vol. 10, no. 1, 2001, pp. 285-306. https://urn.nsk.hr/urn:nbn:hr:217:424525

Eeg, Jan O., Krešimir Kumerički and Ivica Picek. "The double radiative annihilation of the heavy-light fermion bound states." Fizika B 10, no. 1 (2001): 285-306. https://urn.nsk.hr/urn:nbn:hr:217:424525

Eeg, J. O., Kumerički, K. and Picek, I. (2001) 'The double radiative annihilation of the heavy-light fermion bound states', Fizika B, 10(1), pp. 285-306. Available at: https://urn.nsk.hr/urn:nbn:hr:217:424525 (Accessed 23 November 2024)

Eeg JO, Kumerički K, Picek I. The double radiative annihilation of the heavy-light fermion bound states. Fizika B [Internet]. 2001 [cited 2024 November 23];10(1):285-306. Available at: https://urn.nsk.hr/urn:nbn:hr:217:424525

J. O. Eeg, K. Kumerički and I. Picek, "The double radiative annihilation of the heavy-light fermion bound states", Fizika B, vol. 10, no. 1, pp. 285-306, 2001. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:424525. [Accessed: 23 November 2024]

Metadata
Title (english)The double radiative annihilation of the heavy-light fermion bound states
AuthorJan O. Eeg
AuthorKrešimir Kumerički
AuthorIvica Picek
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
We consider the double-radiative decays of heavy-light QED and QCD atoms, μ^+ e^- → γγ and [ B]^0_s → γγ. Especially, we take under scrutiny contributions coming from operators that vanish on the free-quark mass shell. We show that by field redefinitions, these operators are converted into contact terms attached to the bound state dynamics. A net off-shell contribution is suppressed with respect to the effect of the well known flavour-changing magnetic-moment operator by the bound-state binding factor. The negligible off-shellness of the weakly-bound QED atoms becomes more relevant for strongly bound QCD atoms. We analyse this off-shellness in model-approaches to QCD, one of them enabling us to keep close contact to the related effect in QED. We also comment on the off-shell effect in the corresponding process [ B]d → K^* γ, and discuss possible hindering of the claimed beyond-standard-model discovery in this decay mode.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review
Publication versionPublished version
Journal titleFizika B
Numberingvol. 10, no. 1, pp. 285-306
p-ISSN1330-0016
URN:NBNurn:nbn:hr:217:424525
Publication2001
Document URLhttp://fizika.hfd.hr/fizika_b/bv01/b10p285.htm
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2019-10-11 13:56:16