E. K. Karkaryan

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hep-ph2026

Sgoldstino Phenomenology at SND@HL-LHC

D. Kalashnikov, E. K. Karkaryan

We study the phenomenology of light scalar sgoldstinos, with masses from the dimuon threshold up to a few GeV, focusing on their production and detection prospects at the SND@HL-LH…

hep-ph2025

Does the existence of $f_{0}$ meson enlarge the $K^{+} \to I ¨ ^{0} I ¨ ^{0} I ¨ ^{0} e^{+} I^½$ decay probability?

E. K. Karkaryan, V. F. Obraztsov, M. I. Vysotsky

We estimate a possible contribution of the two-pion system $f_{0} (500)$ wide resonance to the decay probability of the super rare decay $K^{+} \to 3 I ¨ ^{0} e^{+} I^½$ . We vary the width of t…

hep-ph2025

On the determination of the relative probability of $I^¥ (5 S) \to B_{s}^{()} B ˉ_{s}^{()}$ decays

A. E. Bondar, E. K. Karkaryan, A. A. Simovonian +1

Semileptonic decays of the $B B$ pairs produced in the $I^¥ (5 S)$ can be used to find the relative probability of $I^¥ (5 S) \to B_{s} B_{s}$ dec…

hep-ph2025

On the $K^{+} \to I ¨ ^{0} I ¨ ^{0} I ¨ ^{0} e^{+} I^½$ decay

E. K. Karkaryan, K. V. Kiselev, V. F. Obraztsov +2

The OKA Collaboration has obtained a new upper limit on the $K^{+} \to I ¨ ^{0} I ¨ ^{0} I ¨ ^{0} e^{+} I^½$ decay probability which is 65 times lower than the one currently listed by PDG. However it…

hep-ph2024

libepa -- a C++/Python library for calculations of cross sections of ultraperipheral collisions

E. V. Zhemchugov, S. I. Godunov, E. K. Karkaryan +3

The library provides a set of C++/Python functions for computing cross sections of ultraperipheral collisions of high energy particles under the equivalent photons approximation. C…

Sgoldstino Phenomenology at SND@HL-LHC

Does the existence of f0​ meson enlarge the K+→I¨0I¨0I¨0e+I^½ decay probability?

On the determination of the relative probability of I^¥(5S)→Bs(∗)​Bˉs(∗)​ decays

On the K+→I¨0I¨0I¨0e+I^½ decay

libepa -- a C++/Python library for calculations of cross sections of ultraperipheral collisions

Does the existence of $f_{0}$ meson enlarge the $K^{+} \to I ¨ ^{0} I ¨ ^{0} I ¨ ^{0} e^{+} I^½$ decay probability?

On the determination of the relative probability of $I^¥ (5 S) \to B_{s}^{()} B ˉ_{s}^{()}$ decays

On the $K^{+} \to I ¨ ^{0} I ¨ ^{0} I ¨ ^{0} e^{+} I^½$ decay