Tests of the standard model in , and
Abstract
A number of recent experimental measurements suggest the possibility of a breakdown of lepton (ℓ) universality in exclusive b → cℓνℓ semileptonic meson decays. We analyze the full differential decay rates for several such processes, and show how to extract combinations of the underlying helicity amplitudes that are completely independent of m ℓ. Ratios of these combinations for different ℓ (as well as some combinations for a single value of ℓ) therefore equal unity in the standard model and provide stringent tests of lepton universality. Furthermore, the extractions assume the form of weighted integrals over the differential decay rates and therefore are useful even in situations where data in some regions of allowed phase space may be sparse.
- Authors:
- Publication Date:
- Research Org.:
- Univ. of Maryland, College Park, MD (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1466417
- Alternate Identifier(s):
- OSTI ID: 1498929
- Grant/Contract Number:
- FG02-93ER40762
- Resource Type:
- Published Article
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Name: Physical Review D Journal Volume: 98 Journal Issue: 3; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Cohen, Thomas D., Lamm, Henry, and Lebed, Richard F. Tests of the standard model in B → D ℓ ν ℓ , B → D * ℓ ν ℓ and B c → J / ψ ℓ ν ℓ. United States: N. p., 2018.
Web. doi:10.1103/PhysRevD.98.034022.
Cohen, Thomas D., Lamm, Henry, & Lebed, Richard F. Tests of the standard model in B → D ℓ ν ℓ , B → D * ℓ ν ℓ and B c → J / ψ ℓ ν ℓ. United States. doi:https://doi.org/10.1103/PhysRevD.98.034022
Cohen, Thomas D., Lamm, Henry, and Lebed, Richard F. Thu .
"Tests of the standard model in B → D ℓ ν ℓ , B → D * ℓ ν ℓ and B c → J / ψ ℓ ν ℓ". United States. doi:https://doi.org/10.1103/PhysRevD.98.034022.
@article{osti_1466417,
title = {Tests of the standard model in B → D ℓ ν ℓ , B → D * ℓ ν ℓ and B c → J / ψ ℓ ν ℓ},
author = {Cohen, Thomas D. and Lamm, Henry and Lebed, Richard F.},
abstractNote = {A number of recent experimental measurements suggest the possibility of a breakdown of lepton (ℓ) universality in exclusive b → cℓνℓ semileptonic meson decays. We analyze the full differential decay rates for several such processes, and show how to extract combinations of the underlying helicity amplitudes that are completely independent of m ℓ. Ratios of these combinations for different ℓ (as well as some combinations for a single value of ℓ) therefore equal unity in the standard model and provide stringent tests of lepton universality. Furthermore, the extractions assume the form of weighted integrals over the differential decay rates and therefore are useful even in situations where data in some regions of allowed phase space may be sparse.},
doi = {10.1103/PhysRevD.98.034022},
journal = {Physical Review D},
number = 3,
volume = 98,
place = {United States},
year = {2018},
month = {8}
}
DOI: https://doi.org/10.1103/PhysRevD.98.034022
Web of Science
Works referenced in this record:
Optimal-observable analysis of possible new physics in
journal, February 2016
- Bhattacharya, Srimoy; Nandi, Soumitra; Patra, Sunando Kumar
- Physical Review D, Vol. 93, Issue 3
Lattice QCD calculation of the form factors at zero recoil and implications for
journal, March 2018
- Harrison, Judd; Davies, Christine T. H.; Wingate, Matthew
- Physical Review D, Vol. 97, Issue 5
$|V_{cb}|$ from $\bar{B}^0\rightarrow D^{*+} \ell^- \bar{\nu} $ zero-recoil form factor using 2$+$1$+$1 flavour HISQ and NRQCD
conference, March 2017
- Harrison, Judd; Davies, Christine; Wingate, Matthew
- Proceedings of 34th annual International Symposium on Lattice Field Theory — PoS(LATTICE2016)
Erratum: form factors at nonzero recoil and extraction of [Phys. Rev. D 92 , 054510 (2015)]
journal, June 2016
- Na, Heechang; Bouchard, Chris M.; Lepage, G. Peter
- Physical Review D, Vol. 93, Issue 11
Precision corrections to dispersive bounds on form factors
journal, December 1997
- Boyd, C. Glenn; Grinstein, Benjamín; Lebed, Richard F.
- Physical Review D, Vol. 56, Issue 11
Measurement of an excess of decays and implications for charged Higgs bosons
journal, October 2013
- Lees, J. P.; Poireau, V.; Tisserand, V.
- Physical Review D, Vol. 88, Issue 7
Measurement of the Lepton Polarization and in the Decay
journal, May 2017
- Hirose, S.; Iijima, T.; Adachi, I.
- Physical Review Letters, Vol. 118, Issue 21
$B_c$ decays from highly improved staggered quarks and NRQCD
conference, March 2017
- Lytle, Andrew; Colquhoun, Brian; Davies, Christine
- Proceedings of 34th annual International Symposium on Lattice Field Theory — PoS(LATTICE2016)
Measurement of the branching ratio of relative to decays with hadronic tagging at Belle
journal, October 2015
- Huschle, M.; Kuhr, T.; Heck, M.
- Physical Review D, Vol. 92, Issue 7
Measurement of the form factors of the decay and determination of the CKM matrix element
journal, December 2010
- Dungel, W.; Schwanda, C.; Adachi, I.
- Physical Review D, Vol. 82, Issue 11
Measurement of the Ratio of Branching Fractions
journal, March 2018
- Aaij, R.; Adeva, B.; Adinolfi, M.
- Physical Review Letters, Vol. 120, Issue 12
Measurement of the Ratio of Branching Fractions
journal, September 2015
- Aaij, R.; Adeva, B.; Adinolfi, M.
- Physical Review Letters, Vol. 115, Issue 11
Analysis of semileptonic decays of mesons containing heavy quarks
journal, January 1990
- Gilman, Frederick J.; Singleton, Robert L.
- Physical Review D, Vol. 41, Issue 1
Review of lattice results concerning low-energy particle physics: Flavour Lattice Averaging Group (FLAG)
journal, February 2017
- Aoki, S.; Aoki, Y.; Bečirević, D.
- The European Physical Journal C, Vol. 77, Issue 2
Measurement of the lepton polarization and in the decay with one-prong hadronic decays at Belle
journal, January 2018
- Hirose, S.; Iijima, T.; Adachi, I.
- Physical Review D, Vol. 97, Issue 1
B → D*l v at non-zero recoil
journal, January 2018
- Avilés-Casco, Alejandro Vaquero; DeTar, Carleton; Du, Daping
- EPJ Web of Conferences, Vol. 175
Counting of generalized polarizabilities
journal, October 2001
- Lebed, Richard F.
- Physical Review D, Vol. 64, Issue 9
Counting form factors of twist-two operators
journal, March 2001
- Ji, Xiangdong; Lebed, Richard F.
- Physical Review D, Vol. 63, Issue 7
R(D∗), |Vcb|, and the Heavy Quark Symmetry relations between form factors
journal, November 2017
- Bigi, Dante; Gambino, Paolo; Schacht, Stefan
- Journal of High Energy Physics, Vol. 2017, Issue 11
Measurement of the ratio of branching fractions $\mathscr{B} (B^0 \to D^{*-} \tau^+ \nu_\tau) / \mathscr{B} (B^0 \to D^{*-} \mu^+ \nu_\mu)$ with hadronic $\tau$ three-prong decays
conference, November 2017
- Wormser, Guy
- Proceedings of The 15th International Conference on Flavor Physics & CP Violation — PoS(FPCP2017)
Update of from the form factor at zero recoil with three-flavor lattice QCD
journal, June 2014
- Bailey, Jon A.; Bazavov, A.; Bernard, C.
- Physical Review D, Vol. 89, Issue 11
Implications of new physics in the decays
journal, March 2018
- Tran, C. T.; Ivanov, M. A.; Körner, J. G.
- Physical Review D, Vol. 97, Issue 5
Evidence for an Excess of Decays
journal, September 2012
- Lees, J. P.; Poireau, V.; Tisserand, V.
- Physical Review Letters, Vol. 109, Issue 10
Angular analyses of exclusive with complex helicity amplitudes
journal, August 2015
- Dey, Biplab
- Physical Review D, Vol. 92, Issue 3
form factors at nonzero recoil and extraction of
journal, September 2015
- Na, Heechang; Bouchard, Chris M.; Lepage, G. Peter
- Physical Review D, Vol. 92, Issue 5
Leptonic and semileptonic decays of charm and bottom hadrons
journal, October 1995
- Richman, Jeffrey D.; Burchat, Patricia R.
- Reviews of Modern Physics, Vol. 67, Issue 4
Publisher’s Note: Measurement of the Ratio of Branching Fractions [Phys. Rev. Lett. 115 , 111803 (2015)]
journal, October 2015
- Aaij, R.
- Physical Review Letters, Vol. 115, Issue 15
Analyzing new physics in the decays with form factors obtained from the covariant quark model
journal, November 2016
- Ivanov, M. A.; Körner, J. G.; Tran, C. T.
- Physical Review D, Vol. 94, Issue 9
Exclusive semileptonic heavy meson decays including lepton mass effects
journal, March 1990
- Körner, J. G.; Schuler, G. A.
- Zeitschrift für Physik C: Particles and Fields, Vol. 46, Issue 1
Scrutinizing B ¯ → D ∗ D π ℓ − ν ¯ ℓ $$ \overline{B}\to {D}^{\ast}\left(D\pi \right){\ell}^{-}{\overline{\nu}}_{\ell } $$ and B ¯ → D ∗ D γ ℓ − ν ¯ ℓ $$ \overline{B}\to {D}^{\ast}\left(D\upgamma \right){\ell}^{-}{\overline{\nu}}_{\ell } $$ in search of new physics footprints
journal, June 2018
- Colangelo, P.; De Fazio, F.
- Journal of High Energy Physics, Vol. 2018, Issue 6
Looking for possible new physics in in light of recent data
journal, April 2017
- Bhattacharya, Srimoy; Nandi, Soumitra; Patra, Sunando K.
- Physical Review D, Vol. 95, Issue 7
sensitivity to new physics
journal, May 2012
- Fajfer, Svjetlana; Kamenik, Jernej F.; Nišandžić, Ivan
- Physical Review D, Vol. 85, Issue 9
Tau properties in from visible final-state kinematics
journal, May 2017
- Alonso, Rodrigo; Camalich, Jorge Martin; Westhoff, Susanne
- Physical Review D, Vol. 95, Issue 9
Measurement of the branching ratio of relative to decays with a semileptonic tagging method
journal, October 2016
- Sato, Y.; Iijima, T.; Adamczyk, K.
- Physical Review D, Vol. 94, Issue 7
calculation of B → D*l v form factor at zero recoil using the Oktay-Kronfeld action
journal, January 2018
- Bailey, Jon A.; Bhattacharya, Tanmoy; Gupta, Rajan
- EPJ Web of Conferences, Vol. 175
Extraction of |Vcb| from B → D(∗)ℓνℓ and the Standard Model predictions of R(D(∗))
journal, December 2017
- Jaiswal, Sneha; Nandi, Soumitra; Patra, Sunando Kumar
- Journal of High Energy Physics, Vol. 2017, Issue 12
form factors at nonzero recoil and from -flavor lattice QCD
journal, August 2015
- Bailey, Jon A.; Bazavov, A.; Bernard, C.
- Physical Review D, Vol. 92, Issue 3
Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016
journal, December 2017
- Amhis, Y.; Banerjee, Sw.; Ben-Haim, E.
- The European Physical Journal C, Vol. 77, Issue 12
Works referencing / citing this record:
Precision model-independent bounds from a global analysis of form factors
journal, November 2019
- Cohen, Thomas D.; Lamm, Henry; Lebed, Richard F.
- Physical Review D, Vol. 100, Issue 9
Footprints of new physics in transitions
journal, November 2018
- Huang, Zhuo-Ran; Li, Ying; Lu, Cai-Dian
- Physical Review D, Vol. 98, Issue 9
$${b\rightarrow c\tau \nu }$$ b → c τ ν transitions in the standard model effective field theory
journal, March 2019
- Hu, Quan-Yi; Li, Xin-Qiang; Yang, Ya-Dong
- The European Physical Journal C, Vol. 79, Issue 3