Semileptonic B-meson decays to light pseudoscalar mesons on the HISQ ensembles

Zechariah Gelzer; C. Bernard; C. DeTar; A. X. El-Khadra; E. Gámiz; Steven Gottlieb; Andreas S. Kronfeld; Yuzhi Liu; Y. Meurice; J. N. Simone; D. Toussaint; R. S. van de Water; R. Zhou

Semileptonic B-meson decays to light pseudoscalar mesons on the HISQ ensembles

Zechariah Gelzer, C. Bernard, C. DeTar, A. X. El-Khadra, E. Gámiz, Steven Gottlieb, Andreas S. Kronfeld, Yuzhi Liu, Y. Meurice, J. N. Simone, D. Toussaint, R. S. van de Water, R. Zhou

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We report the status of an ongoing lattice-QCD calculation of form factors for exclusive semileptonic decays of B mesons with both charged currents (B → π`ν, B_s → K`ν) and neutral currents (B → π`⁺`⁻, B → K`⁺`⁻). The results are important for constraining or revealing physics beyond the Standard Model. This work uses MILC’s (2+1+1)-flavor ensembles with the HISQ action for the sea and light valence quarks and the clover action in the Fermilab interpretation for the b quark. Simulations are carried out at three lattice spacings down to 0.088 fm, with both physical and unphysical sea-quark masses. We present preliminary results for correlation-function fits.

Original language	English (US)
Journal	Unknown Journal
State	Published - Oct 25 2017

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Semileptonic B-meson decays to light pseudoscalar mesons on the HISQ ensembles. / Gelzer, Zechariah; Bernard, C.; DeTar, C.; El-Khadra, A. X.; Gámiz, E.; Gottlieb, Steven; Kronfeld, Andreas S.; Liu, Yuzhi; Meurice, Y.; Simone, J. N.; Toussaint, D.; van de Water, R. S.; Zhou, R.

In: Unknown Journal, 25.10.2017.

Research output: Contribution to journal › Article › peer-review

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abstract = "We report the status of an ongoing lattice-QCD calculation of form factors for exclusive semileptonic decays of B mesons with both charged currents (B → π`ν, Bs → K`ν) and neutral currents (B → π`+`−, B → K`+`−). The results are important for constraining or revealing physics beyond the Standard Model. This work uses MILC{\textquoteright}s (2+1+1)-flavor ensembles with the HISQ action for the sea and light valence quarks and the clover action in the Fermilab interpretation for the b quark. Simulations are carried out at three lattice spacings down to 0.088 fm, with both physical and unphysical sea-quark masses. We present preliminary results for correlation-function fits.",

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T1 - Semileptonic B-meson decays to light pseudoscalar mesons on the HISQ ensembles

AU - Gelzer, Zechariah

AU - Bernard, C.

AU - DeTar, C.

AU - El-Khadra, A. X.

AU - Gámiz, E.

AU - Gottlieb, Steven

AU - Kronfeld, Andreas S.

AU - Liu, Yuzhi

AU - Meurice, Y.

AU - Simone, J. N.

AU - Toussaint, D.

AU - van de Water, R. S.

AU - Zhou, R.

PY - 2017/10/25

Y1 - 2017/10/25

N2 - We report the status of an ongoing lattice-QCD calculation of form factors for exclusive semileptonic decays of B mesons with both charged currents (B → π`ν, Bs → K`ν) and neutral currents (B → π`+`−, B → K`+`−). The results are important for constraining or revealing physics beyond the Standard Model. This work uses MILC’s (2+1+1)-flavor ensembles with the HISQ action for the sea and light valence quarks and the clover action in the Fermilab interpretation for the b quark. Simulations are carried out at three lattice spacings down to 0.088 fm, with both physical and unphysical sea-quark masses. We present preliminary results for correlation-function fits.

AB - We report the status of an ongoing lattice-QCD calculation of form factors for exclusive semileptonic decays of B mesons with both charged currents (B → π`ν, Bs → K`ν) and neutral currents (B → π`+`−, B → K`+`−). The results are important for constraining or revealing physics beyond the Standard Model. This work uses MILC’s (2+1+1)-flavor ensembles with the HISQ action for the sea and light valence quarks and the clover action in the Fermilab interpretation for the b quark. Simulations are carried out at three lattice spacings down to 0.088 fm, with both physical and unphysical sea-quark masses. We present preliminary results for correlation-function fits.

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