B →πll Form Factors for New Physics Searches from Lattice QCD

Jon A. Bailey; A. Bazavov; C. Bernard; C. M. Bouchard; C. DeTar; Daping Du; A. X. El-Khadra; E. D. Freeland; E. Gámiz; Steven Gottlieb; U. M. Heller; A. S. Kronfeld; J. Laiho; L. Levkova; Yuzhi Liu; E. Lunghi; P. B. Mackenzie; Y. Meurice; E. Neil; Si Wei Qiu; J. N. Simone; R. Sugar; D. Toussaint; R. S. Van De Water; Ran Zhou

doi:10.1103/PhysRevLett.115.152002

B →πll Form Factors for New Physics Searches from Lattice QCD

Jon A. Bailey, A. Bazavov, C. Bernard, C. M. Bouchard, C. DeTar, Daping Du, A. X. El-Khadra, E. D. Freeland, E. Gámiz, Steven Gottlieb, U. M. Heller, A. S. Kronfeld, J. Laiho, L. Levkova, Yuzhi Liu, E. Lunghi, P. B. Mackenzie, Y. Meurice, E. Neil, Si Wei QiuJ. N. Simone, R. Sugar, D. Toussaint, R. S. Van De Water, Ran Zhou

Integrated Sciences and Engineering Division

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47 Citations (Scopus)

Abstract

The rare decay B→πℓ+ℓ- arises from b→d flavor-changing neutral currents and could be sensitive to physics beyond the standard model. Here, we present the first ab initio QCD calculation of the B→π tensor form factor fT. Together with the vector and scalar form factors f+ and f0 from our companion work [J.A. Bailey et al., Phys. Rev. D 92, 014024 (2015)], these parametrize the hadronic contribution to B→π semileptonic decays in any extension of the standard model. We obtain the total branching ratio BR(B+→π+μ+μ-)=20.4(2.1)×10-9 in the standard model, which is the most precise theoretical determination to date, and agrees with the recent measurement from the LHCb experiment [R. Aaij et al., J. High Energy Phys. 12 (2012) 125].

Original language	English
Article number	152002
Journal	Physical review letters
Volume	115
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.115.152002
Publication status	Published - 2015 Oct 7

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© 2015 American Physical Society.

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1103/PhysRevLett.115.152002

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Bailey, J. A., Bazavov, A., Bernard, C., Bouchard, C. M., DeTar, C., Du, D., El-Khadra, A. X., Freeland, E. D., Gámiz, E., Gottlieb, S., Heller, U. M., Kronfeld, A. S., Laiho, J., Levkova, L., Liu, Y., Lunghi, E., Mackenzie, P. B., Meurice, Y., Neil, E., ... Zhou, R. (2015). B →πll Form Factors for New Physics Searches from Lattice QCD. Physical review letters, 115(15), Article 152002. https://doi.org/10.1103/PhysRevLett.115.152002

@article{2474e562c707465e83286a39c478373c,

title = "B →πll Form Factors for New Physics Searches from Lattice QCD",

abstract = "The rare decay B→πℓ+ℓ- arises from b→d flavor-changing neutral currents and could be sensitive to physics beyond the standard model. Here, we present the first ab initio QCD calculation of the B→π tensor form factor fT. Together with the vector and scalar form factors f+ and f0 from our companion work [J.A. Bailey et al., Phys. Rev. D 92, 014024 (2015)], these parametrize the hadronic contribution to B→π semileptonic decays in any extension of the standard model. We obtain the total branching ratio BR(B+→π+μ+μ-)=20.4(2.1)×10-9 in the standard model, which is the most precise theoretical determination to date, and agrees with the recent measurement from the LHCb experiment [R. Aaij et al., J. High Energy Phys. 12 (2012) 125].",

author = "Bailey, {Jon A.} and A. Bazavov and C. Bernard and Bouchard, {C. M.} and C. DeTar and Daping Du and El-Khadra, {A. X.} and Freeland, {E. D.} and E. G{\'a}miz and Steven Gottlieb and Heller, {U. M.} and Kronfeld, {A. S.} and J. Laiho and L. Levkova and Yuzhi Liu and E. Lunghi and Mackenzie, {P. B.} and Y. Meurice and E. Neil and Qiu, {Si Wei} and Simone, {J. N.} and R. Sugar and D. Toussaint and {Van De Water}, {R. S.} and Ran Zhou",

note = "Publisher Copyright: {\textcopyright} 2015 American Physical Society.",

year = "2015",

month = oct,

day = "7",

doi = "10.1103/PhysRevLett.115.152002",

language = "English",

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Bailey, JA, Bazavov, A, Bernard, C, Bouchard, CM, DeTar, C, Du, D, El-Khadra, AX, Freeland, ED, Gámiz, E, Gottlieb, S, Heller, UM, Kronfeld, AS, Laiho, J, Levkova, L, Liu, Y, Lunghi, E, Mackenzie, PB, Meurice, Y, Neil, E, Qiu, SW, Simone, JN, Sugar, R, Toussaint, D, Van De Water, RS & Zhou, R 2015, 'B →πll Form Factors for New Physics Searches from Lattice QCD', Physical review letters, vol. 115, no. 15, 152002. https://doi.org/10.1103/PhysRevLett.115.152002

TY - JOUR

T1 - B →πll Form Factors for New Physics Searches from Lattice QCD

AU - Bailey, Jon A.

AU - Bazavov, A.

AU - Bernard, C.

AU - Bouchard, C. M.

AU - DeTar, C.

AU - Du, Daping

AU - El-Khadra, A. X.

AU - Freeland, E. D.

AU - Gámiz, E.

AU - Gottlieb, Steven

AU - Heller, U. M.

AU - Kronfeld, A. S.

AU - Laiho, J.

AU - Levkova, L.

AU - Liu, Yuzhi

AU - Lunghi, E.

AU - Mackenzie, P. B.

AU - Meurice, Y.

AU - Neil, E.

AU - Qiu, Si Wei

AU - Simone, J. N.

AU - Sugar, R.

AU - Toussaint, D.

AU - Van De Water, R. S.

AU - Zhou, Ran

PY - 2015/10/7

Y1 - 2015/10/7

N2 - The rare decay B→πℓ+ℓ- arises from b→d flavor-changing neutral currents and could be sensitive to physics beyond the standard model. Here, we present the first ab initio QCD calculation of the B→π tensor form factor fT. Together with the vector and scalar form factors f+ and f0 from our companion work [J.A. Bailey et al., Phys. Rev. D 92, 014024 (2015)], these parametrize the hadronic contribution to B→π semileptonic decays in any extension of the standard model. We obtain the total branching ratio BR(B+→π+μ+μ-)=20.4(2.1)×10-9 in the standard model, which is the most precise theoretical determination to date, and agrees with the recent measurement from the LHCb experiment [R. Aaij et al., J. High Energy Phys. 12 (2012) 125].

AB - The rare decay B→πℓ+ℓ- arises from b→d flavor-changing neutral currents and could be sensitive to physics beyond the standard model. Here, we present the first ab initio QCD calculation of the B→π tensor form factor fT. Together with the vector and scalar form factors f+ and f0 from our companion work [J.A. Bailey et al., Phys. Rev. D 92, 014024 (2015)], these parametrize the hadronic contribution to B→π semileptonic decays in any extension of the standard model. We obtain the total branching ratio BR(B+→π+μ+μ-)=20.4(2.1)×10-9 in the standard model, which is the most precise theoretical determination to date, and agrees with the recent measurement from the LHCb experiment [R. Aaij et al., J. High Energy Phys. 12 (2012) 125].

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DO - 10.1103/PhysRevLett.115.152002

M3 - Article

C2 - 26550717

AN - SCOPUS:84944097124

SN - 0031-9007

VL - 115

JO - Physical review letters

JF - Physical review letters

IS - 15

M1 - 152002

ER -

B →πll Form Factors for New Physics Searches from Lattice QCD

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