Model-independent determination of B c + → η c ℓ + ν form factors

Murphy, Christopher W.; Soni, Amarjit

doi:10.1103/PhysRevD.98.094026

Title: Model-independent determination of $B_{c}^{+} \to η_{c} ℓ^{+} ν$ form factors

Abstract

Here, we derive model-independent bounds on the form factors for the decay B⁺_c → η_cℓ⁺ν including full mass effects, i.e., ℓ = e, μ, and τ. The bounds are obtained by using the Boyd-Grinstein-Lebed parametrization for the form factors, and fitting to the preliminary lattice data of the HPQCD Collaboration.

Authors:: Murphy, Christopher W.; Soni, Amarjit

Publication Date:: Tue Nov 27 00:00:00 EST 2018

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

OSTI Identifier:: 1483446

Alternate Identifier(s):: OSTI ID: 1487240

Report Number(s):: BNL-209743-2018-JAAM
Journal ID: ISSN 2470-0010; PRVDAQ; 094026

Grant/Contract Number:: SC0012704

Resource Type:: Published Article

Journal Name:: Physical Review D

Additional Journal Information:: Journal Name: Physical Review D Journal Volume: 98 Journal Issue: 9; Journal ID: ISSN 2470-0010

Publisher:: American Physical Society

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; HVP; lattice; QCD; fermion; decay; hadronic; quark; GEV; muon g-2; PACS

Citation Formats


                    Murphy, Christopher W., and Soni, Amarjit. Model-independent determination of B c + → η c ℓ + ν form factors.  United States: N. p., 2018. 
Web.  doi:10.1103/PhysRevD.98.094026.

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                    Murphy, Christopher W., & Soni, Amarjit. Model-independent determination of B c + → η c ℓ + ν form factors.  United States.  https://doi.org/10.1103/PhysRevD.98.094026

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                    Murphy, Christopher W., and Soni, Amarjit. Tue .  
"Model-independent determination of B c + → η c ℓ + ν form factors".  United States.  https://doi.org/10.1103/PhysRevD.98.094026.

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@article{osti_1483446,

  title        = {Model-independent determination of B c + → η c ℓ + ν form factors},

  author       = {Murphy, Christopher W. and Soni, Amarjit},

  abstractNote = {Here, we derive model-independent bounds on the form factors for the decay B+c → ηcℓ+ν including full mass effects, i.e., ℓ = e, μ, and τ. The bounds are obtained by using the Boyd-Grinstein-Lebed parametrization for the form factors, and fitting to the preliminary lattice data of the HPQCD Collaboration.},

  doi          = {10.1103/PhysRevD.98.094026},

  journal      = {Physical Review D},

  number       = 9,

  volume       = 98,

  place        = {United States},

  year         = {Tue Nov 27 00:00:00 EST 2018},

  month        = {Tue Nov 27 00:00:00 EST 2018}

}

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https://doi.org/10.1103/PhysRevD.98.094026

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Cited by: 17 works

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Figures / Tables:

TABLE I: Numeric values for the masses employed in this work. The first six masses are experimentally measured. The masses of scalar and vector B_c mesons were determined on the lattice, and only enter the form factors through the Blaschke factors appearing in Eq. (10). The bottom- and charm-quark massesmore »

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Title: Model-independent determination of B c + → η c ℓ + ν form factors

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Weak transition form factors between heavy mesons
journal, March 1990

The decays $B_{c} \to J / ψ + \bar{ℓ} ν_{ℓ}$ and B → J/ψ + π(K) in covariant confined quark model
journal, August 2018

Test of lepton flavor universality by the measurement of the $B^{0} \to {D^{*}}^{-} τ^{+} ν_{τ}$ branching fraction using three-prong $τ$ decays
journal, April 2018

Erratum: $B \to D l ν$ form factors at nonzero recoil and extraction of $| V_{c b} |$ [Phys. Rev. D 92 , 054510 (2015)]
journal, June 2016

$R_{D^{(*)}}$ anomaly: A possible hint for natural supersymmetry with $R$ -parity violation
journal, November 2017

$B_c$ decays from highly improved staggered quarks and NRQCD
conference, March 2017

Semileptonic Bc decay and heavy quark spin symmetry
journal, February 1993

Measurement of the branching ratio of $\bar{B} \to D^{()} τ^{-} {\bar{ν}}_{τ}$ relative to $\bar{B} \to D^{()} ℓ^{-} {\bar{ν}}_{ℓ}$ decays with hadronic tagging at Belle
journal, October 2015

Measurement of the Ratio of Branching Fractions $B (B_{c}^{+} \to J / ψ τ^{+} ν_{τ}) / B (B_{c}^{+} \to J / ψ μ^{+} ν_{μ})$
journal, March 2018

Semileptonic Bc-meson decays in sum rules of QCD and NRQCD
journal, March 2000

Erratum: Combined analysis of semileptonic $B$ decays to $D$ and $D^{}$ : $R (D^{()})$ , $| V_{c b} |$ , and new physics [Phys. Rev. D 95 , 115008 (2017)]
journal, March 2018

Test of Lepton Universality Using $B^{+} \to K^{+} ℓ^{+} ℓ^{-}$ Decays
journal, October 2014

Implications of new physics in the decays $B_{c} \to (J / ψ, η_{c}) τ ν$
journal, March 2018

Evidence for an Excess of $\bar{B} \to D^{(*)} τ^{-} {\bar{ν}}_{τ}$ Decays
journal, September 2012

Review of Particle Physics
journal, August 2018

$B \to D l ν$ form factors at nonzero recoil and extraction of $| V_{c b} |$
journal, September 2015

An effective field theory for heavy quarks at low energies
journal, April 1990

CODATA recommended values of the fundamental physical constants: 2014
journal, September 2016

Model-independent determinations of form factors
journal, February 1996

$B_{c} \to (J / Ψ, η_{c}) τ ν$ semileptonic decays within the standard model and beyond
journal, October 2017

Constraints on Form Factors for Exclusive Semileptonic Heavy to Light Meson Decays
journal, June 1995

Analyticity, shapes of semileptonic form factors, and $\bar{B} \to π l \bar{ν}$
journal, July 1997

$B \to D^{*} τ {\bar{ν}}_{τ}$ sensitivity to new physics
journal, May 2012

Using heavy quark spin symmetry in semileptonic $B_{c}$ decays
journal, January 2000

Charm and bottom quark masses: An update
journal, October 2009

The static quark effective theory
journal, July 1990

Observation of the decay B s 0 → η c ϕ and evidence for B s 0 → η c π + π −
journal, July 2017

Precision corrections to dispersive bounds on form factors
journal, December 1997

Measurement of an excess of $\bar{B} \to D^{(*)} τ^{-} {\bar{ν}}_{τ}$ decays and implications for charged Higgs bosons
journal, October 2013

Measurement of the $τ$ Lepton Polarization and $R (D^{})$ in the Decay $\bar{B} \to D^{} τ^{-} {\bar{ν}}_{τ}$
journal, May 2017

Study of $B_{c}^{+}$ decays to the $K^{+} K^{-} π^{+}$ final state and evidence for the decay $B_{c}^{+} \to χ_{c 0} π^{+}$
journal, November 2016

Combined analysis of semileptonic $B$ decays to $D$ and $D^{}$ : $R (D^{()})$ , $| V_{c b} |$ , and new physics
journal, June 2017

Precise heavy-light meson masses and hyperfine splittings from lattice QCD including charm quarks in the sea
journal, November 2012

Measurement of the Ratio of Branching Fractions $B ({\bar{B}}^{0} \to D^{* +} τ^{-} {\bar{ν}}_{τ}) / B ({\bar{B}}^{0} \to D^{* +} μ^{-} {\bar{ν}}_{μ})$
journal, September 2015

Measurement of the $τ$ lepton polarization and $R (D^{})$ in the decay $\bar{B} \to D^{} τ^{-} {\bar{ν}}_{τ}$ with one-prong hadronic $τ$ decays at Belle
journal, January 2018

R(D∗), |Vcb|, and the Heavy Quark Symmetry relations between form factors
journal, November 2017

New physics effect on $B_{c} \to J / ψ τ \bar{ν}$ in relation to the $R_{D^{(⁎)}}$ anomaly
journal, January 2018

Revisiting $B \to D ℓ ν$
journal, November 2016

Publisher’s Note: Measurement of the Ratio of Branching Fractions $B ({\bar{B}}^{0} \to D^{* +} τ^{-} {\bar{ν}}_{τ}) / B ({\bar{B}}^{0} \to D^{* +} μ^{-} {\bar{ν}}_{μ})$ [Phys. Rev. Lett. 115 , 111803 (2015)]
journal, October 2015

Model-independent bounds on R(J/ψ)
journal, September 2018

Weak decays of heavy mesons in the static quark approximation
journal, November 1989

Weak decays of the $B_{c}$ meson to charmonium and D mesons in the relativistic quark model
journal, November 2003

Measurement of the Ratio of the $B^{0} \to D^{* -} τ^{+} ν_{τ}$ and $B^{0} \to D^{* -} μ^{+} ν_{μ}$ Branching Fractions Using Three-Prong $τ$ -Lepton Decays
journal, April 2018

B-decay anomalies in a composite leptoquark model
journal, December 2016

Improved QCD form factor constraints and
journal, February 1997

A challenge to lepton universality in B-meson decays
journal, June 2017

Extraction of |Vcb| from B → D(∗)ℓνℓ and the Standard Model predictions of R(D(∗))
journal, December 2017

$B \to D ℓ ν$ form factors at nonzero recoil and $| V_{c b} |$ from $2 + 1$ -flavor lattice QCD
journal, August 2015

Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016
journal, December 2017

Phenomenology of $\,{{b\to c\tau\bar\nu }}\,$ decays in a scalar leptoquark model
journal, July 2019

Charged current $b \to c τ {\bar{ν}}_{τ}$ anomalies in a general $W^{'}$ boson scenario
journal, November 2019