Measurements of charged kaon semileptonic decay branching fractions K±→π0μ±ν and K±→π0e±ν and their ratio

Batley, J. R.; Lazzeroni, C.; Munday, D.J.; Slater, M. W.; Wotton, S. A.; Arcidiacono, R.; Bocquet, G.; Cabibbo, N.; Ceccucci, A.; Cundy, D.; Falaleev, V.; Fidecaro, M.; Gatignon, L.; Gonidec, A.; Kubischta, W.; Norton, A.; Patel, M.; Peters, A.; Balev, S.; Frabetti, P. L.; Goudzovski, E.; Hristov, P.; Kozhuharov, V.; Litov, L.; Madigozhin, D.; Marinova, E.; Molokanova, N.; Polenkevich, I.; Potrebenikov, Yu.; Stoynev, S.; Zinchenko, A.; Monnier, E.; Swallow, E. C.; Winston, R.; Rubin, P.; Walker, A.; Baldini, W.; Ramusino, A. Cotta; Dalpiaz, P.; Damiani, C.; Fiorini, M.; Gianoli, A.; Martini, M.; Petrucci, F.; Savrié, M.; Scarpa, M.; Wahl, H.; Bizzeti, A.; Calvetti, M.; Celeghini, E.; Iacopini, E.; Lenti, M.; Martelli, F.; Ruggiero, G.; Veltri, M.; Behler, M.; Eppard, K.; Kleinknecht, K.; Marouelli, P.; Masetti, L.; Moosbrugger, U.; Morales, C. Morales; Renk, B.; Wache, M.; Wanke, R.; Winhart, A.; Coward, D.; Dabrowski, A.; Martin, T. Fonseca; Shieh, M.; Szleper, M.; Velasco, M.; Wood, Max; Anzivino, G.; Cenci, P.; Imbergamo, E.; Pepé, M.; Petrucci, M. C.; Piccini, M.; Raggi, M.; Valdata‐Nappi, M.; Cerri, C.; Collazuol, G.; Costantini, F.; DiLella, L.; Doble, N.; Fantechi, R.; Fiorini, L.; Giudici, S.; Lamanna, G.; Mannelli, I.; Michetti, A.; Pierazzini, G.; Sozzi, M.; Bloch-Devaux, B.; Cheshkov, C.; Chèze, J.B.; Beer, M. De; Derré, J.; Marel, G.; Mazzucato, E.; Peyaud, B.; Vallage, B.; Holder, M.; Maier, A.; Ziółkowski, M.; Bifani, S.; Biino, C.; Cartiglia, N.; Clemencic, M.; Lopez, S. Goy; Marchetto, F.; Dibon, H.; Jeitler, M.; Markytan, M.; Mikulec, I.; Neuhofer, G.; Widhalm, L.

doi:10.1140/epjc/s10052-007-0253-3

Cited by 22 publications

(15 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results depend on the K L lifetime through the geometrical acceptance of the apparatus as dBR/BR = 0.67dτ L /τ L . Using as reference value τ (0) L = 51.54 ns they get [7] (24), and (15). For the global K L fit, these values have been used accounting for lifetime dependence and other experimental correlations.…”

Section: K L Leading Branching Ratios and Lifetimementioning

confidence: 99%

“…The NA48/2 collaboration has published measurements of the K 3 decay rates normalized to ππ 0 final state [15], BR(K e3 )/BR (ππ 0 ) = 0.2470(10) and BR(K µ3 )/BR(ππ 0 ) = 0.1637(7) In our fit we use these values, and take their correlation into account. KLOE has measured the absolute BRs for the K e3 and K µ3 decays [16].…”

Section: K ± Leading Branching Ratios and Lifetimementioning

confidence: 99%

See 1 more Smart Citation

Review on Flavianet analyses

Palutan¹

2010

Proceedings of 2009 KAON International Conference — PoS(KAON09)

View full text Add to dashboard Cite

We present a global analysis of leptonic and semileptonic kaon decay data, including all recent results published by the BNL-E865, KLOE, KTeV, ISTRA+ and NA48 experiments. This analysis, in conjunction with precise lattice calculations of the hadronic matrix elements now available, leads to a very accurate determination of V us , and allows us to perform several stringent tests of the Standard Model.

show abstract

Section: K L Leading Branching Ratios and Lifetimementioning

confidence: 99%

Section: K ± Leading Branching Ratios and Lifetimementioning

confidence: 99%

Review on Flavianet analyses

Palutan¹

2010

Proceedings of 2009 KAON International Conference — PoS(KAON09)

View full text Add to dashboard Cite

show abstract

“…The NA48/2 collaboration has recently published measurements of the three ratios BR(K e3 /ππ 0 ), BR(K µ3 /ππ 0 ), and BR(K µ3 /K e3 ) [37]. These measurements are not independent; in our fit, we use the values BR(K e3 /ππ 0 ) = 0.2470(10) and BR(K µ3 /ππ 0 ) = 0.1637 (7) and take their correlation into account.…”

Section: K S Leading Branching Ratios and τ Smentioning

confidence: 99%

“…The recent NA48 publication [37] gives values for BR(K e3 )/BR(ππ 0 ), BR(K µ3 )/BR(ππ 0 ). The value of BR(K e3 )/BR(ππ 0 ) has been updated at KAON07.…”

Section: Fit For K ± Brs and Lifetimementioning

confidence: 99%

Precision tests of the Standard Model with leptonic and semileptonic kaon decays

Sciascia

2008

Nuclear Physics B - Proceedings Supplements

View full text Add to dashboard Cite

We present a global analysis of leptonic and semileptonic kaon decays data, including all recent results by BNL-E865, KLOE, KTeV, ISTRA+, and NA48. Experimental results are critically reviewed and combined, taking into account theoretical (both analytical and numerical) constraints on the semileptonic kaon form factors. This analysis leads to a very accurate determination of V us and allows us to perform several stringent tests of the Standard Model.

show abstract

“…For fast-moving pions[41] bounds of O(10 −4 ) on χ µν were obtained[16]. Semileptonic kaon decays have been studied at the SPS at CERN[42] with γ ≃ 150 and will be part of the background in the NA62 experiment. LHCb, designed to observe decays at γ 10, is serendipitously oriented perpendicular to Earth's rotation axis.…”

mentioning

confidence: 99%

Concurrent tests of Lorentz invariance inβ-decay experiments

Vos

Wilschut²,

Timmermans

2015

Phys. Rev. C

View full text Add to dashboard Cite

Modern experiments on neutron and allowed nuclear β decay search for new semileptonic interactions, beyond the "left-handed" electroweak force. We show that ongoing and planned β-decay experiments, with isotopes at rest and in flight, can be exploited as sensitive tests of Lorentz invariance. The variety of correlations that involve the nuclear spin, the direction of the emitted β particle, and the recoil direction of the daughter nucleus allow for relatively simple experiments that give direct bounds on Lorentz violation. The pertinent observables are decay-rate asymmetries and their dependence on sidereal time. We discuss the potential of several asymmetries that together cover a large part of the parameter space for Lorentz violation in the gauge sector. High counting statistics is required.

show abstract

Measurements of charged kaon semileptonic decay branching fractions K±→π0μ±ν and K±→π0e±ν and their ratio

Abstract: Funded by the German Federal Minister for Research and Technology (BMBF) under contract 056SI74 15) Funded by the Austrian Ministry for Traffic and Research under the contract GZ 616.360/2-IV GZ 616.363/2-VIII, and by the Fonds für Wissenschaft und Forschung FWF Nr.

Cited by 22 publications

References 15 publications

Review on Flavianet analyses

Review on Flavianet analyses

Precision tests of the Standard Model with leptonic and semileptonic kaon decays

Concurrent tests of Lorentz invariance inβ-decay experiments

Contact Info

Product

Resources

About