Semileptonic 𝑫 → 𝝅ℓ𝝂, 𝑫 → 𝑲ℓ𝝂 and 𝑫𝒔 → 𝑲ℓ𝝂 decays with 2+1f domain wall fermions

Peter Boyle; Luigi Del Debbio; Felix Erben; Jonathan Flynn; Andreas Jüttner; Michael Marshall; Antonin Portelli; J. Tobias Tsang; Oliver Witzel

Semileptonic 𝑫 → 𝝅ℓ𝝂, 𝑫 → 𝑲ℓ𝝂 and 𝑫𝒔 → 𝑲ℓ𝝂 decays with 2+1f domain wall fermions

Peter Boyle, Luigi Del Debbio, Felix Erben, Jonathan Flynn, Andreas Jüttner, Michael Marshall, Antonin Portelli, J. Tobias Tsang, Oliver Witzel

Publikation: Kapitel i bog/rapport/konference-proceeding › Konferencebidrag i proceedings › Forskning › peer review

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We present the status of our project to calculate 𝐷 → 𝜋ℓ𝜈, 𝐷 → 𝐾ℓ𝜈 and 𝐷𝑠 → 𝐾ℓ𝜈 semileptonic form factors using domain wall fermions for both heavy and light quarks. Our computations are performed using RBC/UKQCD’s set of 2+1 flavour domain wall fermion and Iwasaki gauge field ensembles. We plan to calculate three-point functions covering the full, physically allowed kinematic range. Given that the signal decays faster than the noise, unambiguously and reliably extracting the ground state is critical for success. We include an analysis of operator diagonalisation within several possible 2 × 2 operator bases and find an admixture of gauged fixed wall and Z (2) wall sources to be acceptable at both zero and non-zero momentum. Initial results for semileptonic form factors are presented for first ensembles

Originalsprog	Engelsk
Titel	38th International Symposium on Lattice Field Theory (Lattice 2021)
Status	E-pub ahead of print - 7. jan. 2022

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Open Access VersionIndsendt manuskript, 1,1 MBLicens: CC BY-NC-ND

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title = "Semileptonic 푫 → 흅ℓ흂, 푫 → 푲ℓ흂 and 푫풔 → 푲ℓ흂 decays with 2+1f domain wall fermions",

abstract = "We present the status of our project to calculate 퐷 → 휋ℓ휈, 퐷 → 퐾ℓ휈 and 퐷푠 → 퐾ℓ휈 semileptonic form factors using domain wall fermions for both heavy and light quarks. Our computations are performed using RBC/UKQCD{\textquoteright}s set of 2+1 flavour domain wall fermion and Iwasaki gauge field ensembles. We plan to calculate three-point functions covering the full, physically allowed kinematic range. Given that the signal decays faster than the noise, unambiguously and reliably extracting the ground state is critical for success. We include an analysis of operator diagonalisation within several possible 2 × 2 operator bases and find an admixture of gauged fixed wall and Z (2) wall sources to be acceptable at both zero and non-zero momentum. Initial results for semileptonic form factors are presented for first ensembles",

keywords = "hep-lat",

author = "Peter Boyle and Debbio, {Luigi Del} and Felix Erben and Jonathan Flynn and Andreas J{\"u}ttner and Michael Marshall and Antonin Portelli and Tsang, {J. Tobias} and Oliver Witzel",

year = "2022",

month = jan,

day = "7",

language = "English",

booktitle = "38th International Symposium on Lattice Field Theory (Lattice 2021)",

}

Semileptonic 𝑫 → 𝝅ℓ𝝂, 𝑫 → 𝑲ℓ𝝂 and 𝑫𝒔 → 𝑲ℓ𝝂 decays with 2+1f domain wall fermions. / Boyle, Peter; Debbio, Luigi Del; Erben, Felix; Flynn, Jonathan; Jüttner, Andreas; Marshall, Michael; Portelli, Antonin; Tsang, J. Tobias; Witzel, Oliver.

38th International Symposium on Lattice Field Theory (Lattice 2021). 2022.

Publikation: Kapitel i bog/rapport/konference-proceeding › Konferencebidrag i proceedings › Forskning › peer review

TY - GEN

T1 - Semileptonic 푫 → 흅ℓ흂, 푫 → 푲ℓ흂 and 푫풔 → 푲ℓ흂 decays with 2+1f domain wall fermions

AU - Boyle, Peter

AU - Debbio, Luigi Del

AU - Erben, Felix

AU - Flynn, Jonathan

AU - Jüttner, Andreas

AU - Marshall, Michael

AU - Portelli, Antonin

AU - Tsang, J. Tobias

AU - Witzel, Oliver

PY - 2022/1/7

Y1 - 2022/1/7

N2 - We present the status of our project to calculate 퐷 → 휋ℓ휈, 퐷 → 퐾ℓ휈 and 퐷푠 → 퐾ℓ휈 semileptonic form factors using domain wall fermions for both heavy and light quarks. Our computations are performed using RBC/UKQCD’s set of 2+1 flavour domain wall fermion and Iwasaki gauge field ensembles. We plan to calculate three-point functions covering the full, physically allowed kinematic range. Given that the signal decays faster than the noise, unambiguously and reliably extracting the ground state is critical for success. We include an analysis of operator diagonalisation within several possible 2 × 2 operator bases and find an admixture of gauged fixed wall and Z (2) wall sources to be acceptable at both zero and non-zero momentum. Initial results for semileptonic form factors are presented for first ensembles

AB - We present the status of our project to calculate 퐷 → 휋ℓ휈, 퐷 → 퐾ℓ휈 and 퐷푠 → 퐾ℓ휈 semileptonic form factors using domain wall fermions for both heavy and light quarks. Our computations are performed using RBC/UKQCD’s set of 2+1 flavour domain wall fermion and Iwasaki gauge field ensembles. We plan to calculate three-point functions covering the full, physically allowed kinematic range. Given that the signal decays faster than the noise, unambiguously and reliably extracting the ground state is critical for success. We include an analysis of operator diagonalisation within several possible 2 × 2 operator bases and find an admixture of gauged fixed wall and Z (2) wall sources to be acceptable at both zero and non-zero momentum. Initial results for semileptonic form factors are presented for first ensembles

KW - hep-lat

M3 - Article in proceedings

BT - 38th International Symposium on Lattice Field Theory (Lattice 2021)

ER -

Semileptonic 𝑫 → 𝝅ℓ𝝂, 𝑫 → 𝑲ℓ𝝂 and 𝑫𝒔 → 𝑲ℓ𝝂 decays with 2+1f domain wall fermions

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