Radiative transitions of doubly charmed baryons in lattice QCD

Name: Radiative transitions of doubly charmed baryons in lattice QCD
Author: Bahtiyar, H., Can, K. U., Erkol, Güray, Oka, M., Takahashi, T. T.

İsim	Radiative transitions of doubly charmed baryons in lattice QCD
Yazar	Bahtiyar, H., Can, K. U., Erkol, Güray, Oka, M., Takahashi, T. T.
Basım Tarihi:	2018-12-13
Basım Yeri	- American Physical Society
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	2470-0010
Kayıt Numarası	6fb53ddb-0817-4d34-a08e-8c330edb7177
Lokasyon	Natural and Mathematical Sciences
Tarih	2018-12-13
Notlar	TÜBİTAK ; KAKENHI
Örnek Metin	We evaluate the spin-3/2→spin-1/2 electromagnetic transitions of the doubly charmed baryons on 2+1 flavor, 323×64 PACS-CS lattices with a pion mass of 156(9) MeV/c2. A relativistic heavy quark action is employed to minimize the associated systematic errors on charm-quark observables. We extract the magnetic dipole, M1, and the electric quadrupole, E2, transition form factors. In order to make a reliable estimate of the M1 form factor, we carry out an analysis by including the effect of excited-state contributions. We find that the M1 transition is dominant and light degrees of freedom (u/d- or s-quark) play the leading role. E2 form factors, on the other hand, are found to be negligibly small, which in turn, have a minimal effect on the helicity and transition amplitudes. We predict the decay widths and lifetimes of Ξcc∗+,++ and Ωcc∗+ based on our results. Finite size effects on these ensembles are expected to be around 1%. Differences in kinematical and dynamical factors with respect to the Nγ→Δ transition are discussed and compared to nonlattice determinations while keeping possible systematic artifacts in mind. A comparison to Ωcγ→Ωc∗ transition and a discussion on systematic errors related to the choice of heavy quark action are also given. Results we present here are particularly suggestive for experimental facilities such as LHCb, PANDA, Belle II, and BESIII to search for further states.
DOI	10.1103/PhysRevD.98.114505
Cilt	98

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Radiative transitions of doubly charmed baryons in lattice QCD

Yazar Bahtiyar, H., Can, K. U., Erkol, Güray, Oka, M., Takahashi, T. T.

Basım Tarihi 2018-12-13

Basım Yeri - American Physical Society

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 2470-0010

Kayıt Numarası 6fb53ddb-0817-4d34-a08e-8c330edb7177

Lokasyon Natural and Mathematical Sciences

Tarih 2018-12-13

Notlar TÜBİTAK ; KAKENHI

Örnek Metin We evaluate the spin-3/2→spin-1/2 electromagnetic transitions of the doubly charmed baryons on 2+1 flavor, 323×64 PACS-CS lattices with a pion mass of 156(9) MeV/c2. A relativistic heavy quark action is employed to minimize the associated systematic errors on charm-quark observables. We extract the magnetic dipole, M1, and the electric quadrupole, E2, transition form factors. In order to make a reliable estimate of the M1 form factor, we carry out an analysis by including the effect of excited-state contributions. We find that the M1 transition is dominant and light degrees of freedom (u/d- or s-quark) play the leading role. E2 form factors, on the other hand, are found to be negligibly small, which in turn, have a minimal effect on the helicity and transition amplitudes. We predict the decay widths and lifetimes of Ξcc∗+,++ and Ωcc∗+ based on our results. Finite size effects on these ensembles are expected to be around 1%. Differences in kinematical and dynamical factors with respect to the Nγ→Δ transition are discussed and compared to nonlattice determinations while keeping possible systematic artifacts in mind. A comparison to Ωcγ→Ωc∗ transition and a discussion on systematic errors related to the choice of heavy quark action are also given. Results we present here are particularly suggestive for experimental facilities such as LHCb, PANDA, Belle II, and BESIII to search for further states.

DOI 10.1103/PhysRevD.98.114505

Cilt 98