Scrutinizing CKM unitarity with a new measurement of the K3/K2 branching fraction
Scrutinizing CKM unitarity with a new measurement of the K3/K2 branching fraction
复制标题
通过 K3/K2 支化分数的新测量来检查 CKM 单一性
DOI:
10.1016/j.physletb.2023.137748
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发表时间:
2023
影响因子:
4.4
通讯作者:
Moulson, Matthew
中科院分区:
文献类型:
--
作者:
Cirigliano, Vincenzo;Crivellin, Andreas;Hoferichter, Martin;Moulson, Matthew
Precision tests of first-row unitarity of the Cabibbo–Kobayashi–Maskawa matrix currently display two intriguing tensions, both at the 3σ level. First, combining determinations of V u d from superallowed β decays with V u s from kaon decays suggests a deficit in the unitarity relation. At the same time, a tension of similar significance has emerged between K ℓ 2 and K ℓ 3 decays. In this Letter, we point out that a measurement of the K μ 3/K μ 2 branching fraction at the level of 0.2% would have considerable impact on clarifying the experimental situation in the kaon sector, especially in view of tensions in the global fit to kaon data as well as the fact that the K μ 2 channel is currently dominated by a single experiment. Such a measurement, as possible for example at NA62, would further provide important constraints on physics beyond the Standard Model, most notably on the role of right-handed vector currents.
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影响因子:
56.9
作者:
A. Crivellin;M. Hoferichter
通讯作者:
M. Hoferichter
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
A. Lai;G. Pierazzini
通讯作者:
G. Pierazzini
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
Kloe Collaboration
通讯作者:
Kloe Collaboration
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
J. Batley;J. Chèze;E. Goudzovski;D. Cundy;N. Cartiglia;C. Lazzeroni;E. Mazzucato;M. Calvetti;N. Doble;A. Maier;M. Beer;H. Dibon;Y. Potrebenikov;M. Scarpa;T. F. Martin;K. Kleinknecht;G. Ruggiero;P. Lubrano;C. Cheshkov;G. Graziani;F. Costantini;S. Giudici;G. Gouge;E. Monnier;L. Fiorini;P. Dalpiaz;S. Lopez;M. Behler;M. Veltri;L. Gatignon;M. Pepe;B. Peyaud;P. Khristov;A. Gonidec;A. Michetti;M. Sozzi;A. Norton;A. Walker;I. Mannelli;M. Martini;R. Wanke;P. Grafström;E. Iacopini;P. Debu;K. Eppard;G. Anzivino;A. Winhart;Maulik R. Patel;G. Lamanna;M. Holder;F. Marchetto;U. Koch;S. Wotton;H. Wahl;R. Winston;R. Sacco;I. Mikulec;G. Marel;P. Frabetti;E. Imbergamo;C. Morales;M. Markytan;A. Peters;F. Martelli;B. Vallage;M. Piccini;L. Masetti;M. Valdata;M. Slater;G. Kalmus;S. Stoynev;V. Kekelidze;E. Swallow;B. Panzer;L. Litov;D. Munday;A. Nappi;M. Eppard;U. Moosbrugger;G. Collazuol;P. Marouelli;A. Hirstius;W. Wiślicki;F. Petrucci;M. Savrié;M. Velasco;C. Biino;A. Gianoli;N. Molokanova;A. Ceccucci;G. Bocquet;W. Baldini;G. Pierazzini;G. Neuhofer;N. Pastrone;P. Cenci;C. Cerri;M. Jeitler;A. Zinchenko;D. Madigozhin;V. Falaleev;E. Menichetti;M. Petrucci;M. Lenti;M. Clemencic;W. Kubischta;A. Dabrowski;R. Fantechi;A. Bizzeti;R. Arcidiacono;P. Rubin;L. Widhalm;M. Ziolkowski
通讯作者:
M. Ziolkowski
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
T. Collaboration
通讯作者:
T. Collaboration