A. Yeghiazaryan

activity

20112020

most citedTowards next-to-next-to-leading-log accuracy for the width difference in the

B_{s} - B ˉ_{s}

system: fermionic contributions to order

(m_{c} / m_{b})^{0}

and

(m_{c} / m_{b})^{1}

35 citations · 88 across the 4 of their papers we have counts for

collaborators

4 papers

hep-ph2020★ 25 cited

Penguin contribution to width difference and CP asymmetry in $B_{q}$ - $B ˉ_{q}$ mixing at order $α_{s}^{2} N_{f}$

Hrachia M. Asatrian, Hrachya H. Asatryan, Artyom Hovhannisyan +3

We present new contributions to the decay matrix element $Γ_{12}^{q}$ of the $B_{q}$ - $B ˉ_{q}$ mixing complex, where $q = d$ or $s$ . Our new results constitute the order $α_{s}^{2} N_{f}$ cor…

hep-ph2017★ 35 cited

Towards next-to-next-to-leading-log accuracy for the width difference in the $B_{s} - B ˉ_{s}$ system: fermionic contributions to order $(m_{c} / m_{b})^{0}$ and $(m_{c} / m_{b})^{1}$

H. M. Asatrian, Artyom Hovhannisyan, Ulrich Nierste +1

We calculate a class of three-loop Feynman diagrams which contribute to the next-to-next-to-leading logarithmic approximation for the width difference $Δ Γ_{s}$ in the $B_s-\bar{B}_…

hep-ph2012★ 21 cited

Phase space analysis for three and four massive particles in final states

H. M. Asatrian, A. Hovhannisyan, A. Yeghiazaryan

We propose formulae for computing the phase space integrals of $1 \to 3$ and $1 \to 4$ processes with massive particles in final states. As an application of these formulae we study…

hep-ph2011★ 7 cited

NLL QCD contribution of the Electromagnetic Dipole operator to B-> X_s gamma gamma

H. M. Asatrian, C. Greub, A. Kokulu +1

We calculate the set of O(alpha_s) corrections to the double differential decay width dGamma_77/(ds_1*ds_2) for the process B -> X_s gamma gamma originating from diagrams involving…

Penguin contribution to width difference and CP asymmetry in Bq​-Bˉq​ mixing at order αs2​Nf​

Towards next-to-next-to-leading-log accuracy for the width difference in the Bs​−Bˉs​ system: fermionic contributions to order (mc​/mb​)0 and (mc​/mb​)1

Phase space analysis for three and four massive particles in final states

NLL QCD contribution of the Electromagnetic Dipole operator to B-> X_s gamma gamma

Penguin contribution to width difference and CP asymmetry in $B_{q}$ - $B ˉ_{q}$ mixing at order $α_{s}^{2} N_{f}$

Towards next-to-next-to-leading-log accuracy for the width difference in the $B_{s} - B ˉ_{s}$ system: fermionic contributions to order $(m_{c} / m_{b})^{0}$ and $(m_{c} / m_{b})^{1}$