Determination of the m[u] and m[d] quark masses from eta to 3 pi decay

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F11%3A10106077" target="_blank" >RIV/00216208:11320/11:10106077 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.nuclphysbps.2011.10.074" target="_blank" >http://dx.doi.org/10.1016/j.nuclphysbps.2011.10.074</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.nuclphysbps.2011.10.074" target="_blank" >10.1016/j.nuclphysbps.2011.10.074</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Determination of the m[u] and m[d] quark masses from eta to 3 pi decay

Popis výsledku v původním jazyce

For a precise determination of the m_u and m_d quark masses, it is useful to combine isospin-symmetric results of lattice or sum-rules QCD techniques with some isospin-breaking study performed in chiral perturbation theory (ChPT). The most promising process for the later is eta to 3pi decay. However, this process is affected by large chiral corrections and there are observed discrepancies between the values of Dalitz plot parameters stemming from the standard ChPT computation of its amplitude and thoseexperimentally measured. We describe here the method based on analytic dispersive representation which attempts to obtain the information on the masses by taking this discrepancy into account independently of its exact origin. Together with the results of this analysis we present a review of some other constraints on the light quark masses and conclude with values of the masses compatible with them.

Název v anglickém jazyce

Determination of the m[u] and m[d] quark masses from eta to 3 pi decay

Popis výsledku anglicky

For a precise determination of the m_u and m_d quark masses, it is useful to combine isospin-symmetric results of lattice or sum-rules QCD techniques with some isospin-breaking study performed in chiral perturbation theory (ChPT). The most promising process for the later is eta to 3pi decay. However, this process is affected by large chiral corrections and there are observed discrepancies between the values of Dalitz plot parameters stemming from the standard ChPT computation of its amplitude and thoseexperimentally measured. We describe here the method based on analytic dispersive representation which attempts to obtain the information on the masses by taking this discrepancy into account independently of its exact origin. Together with the results of this analysis we present a review of some other constraints on the light quark masses and conclude with values of the masses compatible with them.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BF - Elementární částice a fyzika vysokých energií

OECD FORD obor

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Projekt

<a href="/cs/project/LC527" target="_blank" >LC527: Centrum částicové fyziky</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Nuclear Physics B - Proceedings Supplements

ISSN

0920-5632

e-ISSN

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Svazek periodika

219-220

Číslo periodika v rámci svazku

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Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

68-73

Kód UT WoS článku

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EID výsledku v databázi Scopus

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