Model-independent prediction of R(ηc)

Berns, Anson; Lamm, Henry

doi:10.1007/jhep12(2018)114

Title: Model-independent prediction of R(η_c)

Abstract

We present a model-independent prediction for R(η_c)≡$$\mathscr{BR}$$(B$$^+_c$$ → η_cτ+ν_τ)/$$\mathscr{BR}$$(B +c → η_cµ⁺ν_µ). This prediction is obtained from the form factors through a combination of dispersive relations, heavy-quark relations at zero-recoil, and the limited existing determinations from lattice QCD. The resulting prediction, R(η_c) = 0.29(5), agrees with previous model predictions, but without uncontrolled systematic uncertainties.

Authors:

^[1];

^[2]

Montgomery Blair High School, Silver Spring, MD (United States)
Univ. of Maryland, College Park, MD (United States)

Publication Date:: Tue Dec 18 00:00:00 EST 2018

Research Org.:: Univ. of Maryland, College Park, MD (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1610224

Grant/Contract Number:: FG02-93ER40762

Resource Type:: Accepted Manuscript

Journal Name:: Journal of High Energy Physics (Online)

Additional Journal Information:: Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2018; Journal Issue: 12; Journal ID: ISSN 1029-8479

Publisher:: Springer Berlin

Country of Publication:: United States

Language:: English

Subject:: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Physics; Heavy Quark Physics; Quark Masses and SM Parameters; Lattice QCD

Citation Formats


                    Berns, Anson, and Lamm, Henry. Model-independent prediction of R(ηc).  United States: N. p., 2018. 
Web.  doi:10.1007/jhep12(2018)114.

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                    Berns, Anson, & Lamm, Henry. Model-independent prediction of R(ηc).  United States.  https://doi.org/10.1007/jhep12(2018)114

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                    Berns, Anson, and Lamm, Henry. Tue .  
"Model-independent prediction of R(ηc)".  United States.  https://doi.org/10.1007/jhep12(2018)114.  https://www.osti.gov/servlets/purl/1610224.

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@article{osti_1610224,

  title        = {Model-independent prediction of R(ηc)},

  author       = {Berns, Anson and Lamm, Henry},

  abstractNote = {We present a model-independent prediction for R(ηc)≡$\mathscr{BR}$(B$^+_c$ → ηcτ+ντ)/$\mathscr{BR}$(B +c → ηcµ+νµ). This prediction is obtained from the form factors through a combination of dispersive relations, heavy-quark relations at zero-recoil, and the limited existing determinations from lattice QCD. The resulting prediction, R(ηc) = 0.29(5), agrees with previous model predictions, but without uncontrolled systematic uncertainties.},

  doi          = {10.1007/jhep12(2018)114},

  journal      = {Journal of High Energy Physics (Online)},

  number       = 12,

  volume       = 2018,

  place        = {United States},

  year         = {Tue Dec 18 00:00:00 EST 2018},

  month        = {Tue Dec 18 00:00:00 EST 2018}

}

Copy to clipboard

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Works referencing / citing this record:

Lepton flavor universality violation in semileptonic tree level weak transitions
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Azizi, K.; Sarac, Y.; Sundu, H.
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Title: Model-independent prediction of R(ηc)

Abstract

Citation Formats

Semileptonic decays of $$B_c$$ B c meson to S-wave charmonium states in the perturbative QCD approach journal, October 2016

Two-point functions for flavour changing currents in QCD journal, July 1981

Hadron properties from QCD sum rules journal, October 1985

Selected decays of heavy mesons in covariant confined quark model: Semileptonic and Nonleptonic Decays of $B_c$ Meson conference, March 2018

Weak transition form factors between heavy mesons journal, March 1990

Lattice QCD calculation of the B ( s ) → D ( s ) * ℓ ν form factors at zero recoil and implications for | V c b | journal, March 2018

$|V_{cb}|$ from $\bar{B}^0\rightarrow D^{*+} \ell^- \bar{\nu} $ zero-recoil form factor using 2$+$1$+$1 flavour HISQ and NRQCD conference, March 2017

The decays B c → J / ψ + ℓ ¯ ν ℓ and B → J/ψ + π(K) in covariant confined quark model journal, August 2018

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

Slope of the Isgur-Wise function from a QSSR constraint on the couplings journal, November 1994

Study of exclusive semileptonic and nonleptonic decays of B c − in a nonrelativistic quark model journal, October 2006

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

Model-independent extraction of |Vcb| using dispersion relations journal, June 1995

Heavy meson form factors from QCD journal, October 1990

Review of lattice results concerning low-energy particle physics text, January 2017

Review of lattice results concerning low-energy particle physics: Flavour Lattice Averaging Group (FLAG) journal, February 2017

QCD contribution to vacuum polarization: The pseudoscalar unequal mass case journal, December 1980

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

Mesons with beauty and charm: Spectroscopy journal, June 1994

QCD sum rules I: Perturbative results for current correlators journal, June 1990

Implications of new physics in the decays B c → ( J / ψ , η c ) τ ν journal, March 2018

Analyzing new physics in the decays B ¯ 0 → D ( * ) τ − ν ¯ τ with form factors obtained from the covariant quark model journal, November 2016

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

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

Review of lattice results concerning low-energy particle physics text, January 2016

Using heavy quark spin symmetry in semileptonic B c decays journal, January 2000

Exclusive semileptonic and nonleptonic decays of the B c meson journal, March 2006

Improved QCD form factor constraints and journal, February 1997

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

Semileptonic decays of the B c meson journal, March 2001

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

B_c Decays and Lifetime in QCD Sum Rules text, January 2000

Measurement of the branching ratio of $B\rightarrow D^{(\ast)}\tau\nu_\tau$ relative to $B\rightarrow D^{(\ast)}\ell\nu_\ell$ decays with hadronic tagging at Belle text, January 2015

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Title: Model-independent prediction of R(η_c)

Semileptonic decays of $$B_c$$ B c meson to S-wave charmonium states in the perturbative QCD approach
journal, October 2016

Two-point functions for flavour changing currents in QCD
journal, July 1981

Hadron properties from QCD sum rules
journal, October 1985

Selected decays of heavy mesons in covariant confined quark model: Semileptonic and Nonleptonic Decays of $B_c$ Meson
conference, March 2018

Weak transition form factors between heavy mesons
journal, March 1990

Lattice QCD calculation of the $B_{(s)} \to D_{(s)}^{*} ℓ ν$ form factors at zero recoil and implications for $| V_{c b} |$
journal, March 2018

$|V_{cb}|$ from $\bar{B}^0\rightarrow D^{*+} \ell^- \bar{\nu} $ zero-recoil form factor using 2$+$1$+$1 flavour HISQ and NRQCD
conference, March 2017

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

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

Slope of the Isgur-Wise function from a QSSR constraint on the couplings
journal, November 1994

Study of exclusive semileptonic and nonleptonic decays of $B_{c}^{-}$ in a nonrelativistic quark model
journal, October 2006

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

Model-independent extraction of |Vcb| using dispersion relations
journal, June 1995

Heavy meson form factors from QCD
journal, October 1990

Review of lattice results concerning low-energy particle physics
text, January 2017

Review of lattice results concerning low-energy particle physics: Flavour Lattice Averaging Group (FLAG)
journal, February 2017

QCD contribution to vacuum polarization: The pseudoscalar unequal mass case
journal, December 1980

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

Mesons with beauty and charm: Spectroscopy
journal, June 1994

QCD sum rules I: Perturbative results for current correlators
journal, June 1990

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

Analyzing new physics in the decays ${\bar{B}}^{0} \to D^{(*)} τ^{-} {\bar{ν}}_{τ}$ with form factors obtained from the covariant quark model
journal, November 2016

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

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

Review of lattice results concerning low-energy particle physics
text, January 2016

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

Exclusive semileptonic and nonleptonic decays of the $B_{c}$ meson
journal, March 2006

Improved QCD form factor constraints and
journal, February 1997

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

Semileptonic decays of the $B_{c}$ meson
journal, March 2001

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

B_c Decays and Lifetime in QCD Sum Rules
text, January 2000

Measurement of the branching ratio of $B\rightarrow D^{(\ast)}\tau\nu_\tau$ relative to $B\rightarrow D^{(\ast)}\ell\nu_\ell$ decays with hadronic tagging at Belle
text, January 2015

Lepton flavor universality violation in semileptonic tree level weak transitions
journal, June 2019

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journal, July 2019

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