Advanced Particle Physics Volume II

Boyarkin, O. M.

doi:10.1201/b10607

Cited by 4 publications

(8 citation statements)

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“…In contrast, the protonated analogues have been studied very recently. [10][11][12] The coupling of an electrospray source with a cold ion trap has contributed to the ease of production and spectroscopic studies of such species. An important milestone was reached in the seminal work of O. Boyarkin and T.R.…”

Section: Introductionmentioning

confidence: 99%

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Excited State Dynamics of Protonated Phenylalanine and Tyrosine: Photo-Induced Reactions Following Electronic Excitation

et al. 2014

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The electronic spectroscopy and the electronic excited state properties of cold protonated phenylalanine and protonated tyrosine have been revisited on a large spectral domain and interpreted by comparison with ab initio calculations. The protonated species are stored in a cryogenically cooled Paul trap, maintained at ∼10 K, and the parent and all the photofragment ions are mass-analyzed in a time-of-flight mass spectrometer, which allows detecting the ionic species with an improved mass resolution compared to what is routinely achieved with a quadrupole mass spectrometer. These new results emphasize the competition around the band origin between two proton transfer reactions from the ammonium group toward either the aromatic chromophore or the carboxylic acid group. These reactions are initiated by the coupling of the locally excited ππ* state with higher charge transfer states, the positions and coupling of which depend on the conformation of the protonated molecules. Each of these reaction processes gives rise to specific fragmentation channels that supports the conformer selectivity observed in the photofragmentation spectra of protonated tyrosine and phenylalanine.

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Section: Introductionmentioning

confidence: 99%

“…An important milestone was reached in the seminal work of O. Boyarkin and T.R. Rizzo in Lausanne [11][12][13] using a cold 22-pole ion trap developed by D. Gerlich. 14 Since then, several experimental set-ups using this technique [15][16][17] have been built and a simplified version has been developed using a Paul ion trap.…”

Section: Introductionmentioning

confidence: 99%

Excited State Dynamics of Protonated Phenylalanine and Tyrosine: Photo-Induced Reactions Following Electronic Excitation

et al. 2014

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“…the gauge boson sector include two neutral (Z 1,2 ) and two charged (W 1,2 ) gauge bosons, where Z 1 and W 1 bosons are analogs of the Z and W bosons of the SM, respectively. The Lagrangian describing interaction of the charged gauge bosons with the Z 1,2 bosons is conveniently expressed by the following form [21]…”

Section: The Left-right-symmetry and Neutrino Mixingmentioning

confidence: 99%

“…The LRM made the following predictions about the values of the mixings in the gauge bosons sector (see, for example, the book [21] and references therein)…”

Section: The Left-right-symmetry and Neutrino Mixingmentioning

confidence: 99%

“…The goal of our work is to consider the CLFV decays of the Z boson and establish what parameters of the LRM neutrino sector therewith could be determined. In the next chapter we give a short summary of the LRM (the detail description of the model could be found in the book [21]). In sections 3 we calculate the branching ratio of the decay Z → τ − µ + in the third order of the perturbation theory.…”

Section: Introductionmentioning

confidence: 99%

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Neutrino mixings as a source of lepton flavor violations

Boyarkin

Boyarkina

Vasileuskaya

2018

Int. J. Mod. Phys. A

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Within the left-right symmetric model (LRM) the Z boson decay into the channel Z → τ µ are investigated. The branching ratios of this decay is found in the third order of the perturbation theory. The obtained expression does not equal to zero only at the existence of the neutrino mixings. It means that from the point of view of the LRM nonconservation both of neutral and of charged lepton flavors has the same nature. As a result, elucidation of the decays Z → l i l k (i = k) could provide data concerned the neutrino sector structure of the LRM. The neutrino sector parameters which could be measured in that case are as follows: (i) difference of the heavy neutrino masses; (ii) heavy-heavy neutrino mixing; (iii) heavy-light neutrino mixing.Keywords: Z boson decays, charged lepton flavor violation, left-right symmetric model, heavy and light neutrinos, mixing in the neutrino sector, Large Hadron Collider.

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UV Photoinduced Dynamics of Conformer-Resolved Aromatic Peptides

2019

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A detailed understanding of radiative and nonradiative processes in peptides containing an aromatic chromophore requires the knowledge of the nature and energy level of low-lying excited states that could be coupled to the bright 1 * excited state. Isolated aromatic amino acids and short peptides provide benchmark cases to study, at the molecular level, the photoinduced processes that govern their excited state dynamics. Recent advances in gas phase laser spectroscopy of conformer-selected peptides have paved the way to a better, yet not fully complete, understanding of the influence of intramolecular interactions on the properties of aromatic chromophores. This review aims at providing an overview of the photophysics and photochemistry at play in neutral and charged aromatic chromophore containing peptides, with a particular emphasis on the charge (electron, proton) and energy transfer processes. A significant impact is exerted by the experimental progress in energy-and time-resolved spectroscopy of protonated species, which leads to a growing demand for theoretical supports to accurately describe their excited state properties.

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Advanced Particle Physics Volume II

Cited by 4 publications

References 0 publications

Excited State Dynamics of Protonated Phenylalanine and Tyrosine: Photo-Induced Reactions Following Electronic Excitation

Excited State Dynamics of Protonated Phenylalanine and Tyrosine: Photo-Induced Reactions Following Electronic Excitation

Neutrino mixings as a source of lepton flavor violations

UV Photoinduced Dynamics of Conformer-Resolved Aromatic Peptides

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