Λ c → Λ * ( 1520 ) form factors from lattice QCD and improved analysis of the Λ b → Λ * ( 1520 ) and Λ b → Λ c * ( 2595 , 2625 ) form factors

Meinel, Stefan; Rendon, Gumaro

doi:10.1103/PhysRevD.105.054511

Title: $Λ_{c} \to Λ^{} (1520)$ form factors from lattice QCD and improved analysis of the $Λ_{b} \to Λ^{} (1520)$ and $Λ_{b} \to Λ_{c}^{*} (2595, 2625)$ form factors

Abstract

We present the first lattice-QCD calculation of the form factors governing the charm-baryon semileptonic decays Λ_c→Λ*(1520)ℓ⁺ν_ℓ. As in our previous calculation of the Λ_b→Λ*(1520) form factors, we work in the Λ*(1520) rest frame, but here we use four different heavy-baryon momenta instead of just two. Because of the lower mass of the Λ_c, the moderately-sized momenta used here are sufficient to determine the form factors in the full kinematic range of the semileptonic decay. We also update the analysis of our lattice results for the Λ_b→Λ*(1520) and Λ_b→Λ*_c(2595,2625) form factors by imposing exact relations among the different form factors at zero recoil that follow from rotational symmetry. Imposing these relations ensures the correct behavior of the angular observables near the endpoint.

Authors:

;

Publication Date:: Fri Mar 25 00:00:00 EDT 2022

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

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Office of Science (SC), Nuclear Physics (NP); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); National Science Foundation (NSF)

OSTI Identifier:: 1858270

Alternate Identifier(s):: OSTI ID: 1871821

Report Number(s):: BNL-223047-2022-JAAM
Journal ID: ISSN 2470-0010; PRVDAQ; 054511

Grant/Contract Number:: SC0009913; SC0012704; AC02-05CH1123; AC02-05CH11231; ACI-1548562

Resource Type:: Published Article

Journal Name:: Physical Review D

Additional Journal Information:: Journal Name: Physical Review D Journal Volume: 105 Journal Issue: 5; Journal ID: ISSN 2470-0010

Publisher:: American Physical Society

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; form factors; leptonic, semileptonic and radiative decays; particle phenomena; particle decays; bottom baryons; hadrons; baryons; heavy baryons; charmed baryons; hyperons; lattice QCD

Citation Formats


                    Meinel, Stefan, and Rendon, Gumaro. Λ c → Λ * ( 1520 ) form factors from lattice QCD and improved analysis of the Λ b → Λ * ( 1520 ) and Λ b → Λ c * ( 2595 , 2625 ) form factors.  United States: N. p., 2022. 
Web.  doi:10.1103/PhysRevD.105.054511.

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                    Meinel, Stefan, & Rendon, Gumaro. Λ c → Λ * ( 1520 ) form factors from lattice QCD and improved analysis of the Λ b → Λ * ( 1520 ) and Λ b → Λ c * ( 2595 , 2625 ) form factors.  United States.  https://doi.org/10.1103/PhysRevD.105.054511

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                    Meinel, Stefan, and Rendon, Gumaro. Fri .  
"Λ c → Λ * ( 1520 ) form factors from lattice QCD and improved analysis of the Λ b → Λ * ( 1520 ) and Λ b → Λ c * ( 2595 , 2625 ) form factors".  United States.  https://doi.org/10.1103/PhysRevD.105.054511.

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@article{osti_1858270,

  title        = {Λ c → Λ * ( 1520 ) form factors from lattice QCD and improved analysis of the Λ b → Λ * ( 1520 ) and Λ b → Λ c * ( 2595 , 2625 ) form factors},

  author       = {Meinel, Stefan and Rendon, Gumaro},

  abstractNote = {We present the first lattice-QCD calculation of the form factors governing the charm-baryon semileptonic decays Λc→Λ*(1520)ℓ+νℓ. As in our previous calculation of the Λb→Λ*(1520) form factors, we work in the Λ*(1520) rest frame, but here we use four different heavy-baryon momenta instead of just two. Because of the lower mass of the Λc, the moderately-sized momenta used here are sufficient to determine the form factors in the full kinematic range of the semileptonic decay. We also update the analysis of our lattice results for the Λb→Λ*(1520) and Λb→Λ*c(2595,2625) form factors by imposing exact relations among the different form factors at zero recoil that follow from rotational symmetry. Imposing these relations ensures the correct behavior of the angular observables near the endpoint.},

  doi          = {10.1103/PhysRevD.105.054511},

  journal      = {Physical Review D},

  number       = 5,

  volume       = 105,

  place        = {United States},

  year         = {Fri Mar 25 00:00:00 EDT 2022},

  month        = {Fri Mar 25 00:00:00 EDT 2022}

}

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Title: Λ c → Λ * ( 1520 ) form factors from lattice QCD and improved analysis of the Λ b → Λ * ( 1520 ) and Λ b → Λ c * ( 2595 , 2625 ) form factors

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Nature of the lowest-lying odd parity charmed baryon Λ c ( 2595 ) and Λ c ( 2625 ) resonances journal, January 2020

Prospects for New Physics searches with $${{\Lambda } ^0_{\mathrm {b}}} \!\rightarrow {\Lambda } (1520) {{\ell ^+} {\ell ^-}} $$ decays journal, June 2021

Continuum limit physics from 2 + 1 flavor domain wall QCD journal, April 2011

Λ c → N form factors from lattice QCD and phenomenology of Λ c → n ℓ + ν ℓ and Λ c → p μ + μ − decays journal, February 2018

Angular analysis of the rare decay $$ {\Lambda}_b\to \Lambda (1520)\left(\to N\overline{K}\right){\ell}^{+}{\ell}^{-} $$ journal, June 2019

Semileptonic Λ c decay to ν l + and Λ ( 1405 ) journal, January 2016

Review of Particle Physics journal, August 2020

Covariant approximation averaging journal, June 2015

Determination of the quark coupling strength |Vub| using baryonic decays journal, July 2015

The $$ {\Lambda}_b\to {\Lambda}^{\ast }(1520)\left(\to N\overline{K}\right){\mathrm{\ell}}^{+}{\mathrm{\ell}}^{-} $$ decay at low-recoil in HQET journal, July 2020

Measurement of the Absolute Branching Fraction of the Inclusive Semileptonic Λ c + Decay journal, December 2018

(A)symmetries of weak decays at and near the kinematic endpoint journal, March 2014

First lattice QCD calculation of semileptonic decays of charmed-strange baryons Ξ c * journal, January 2022

Nonperturbative tuning of an improved relativistic heavy-quark action with application to bottom spectroscopy journal, December 2012

Towards an amplitude analysis of the decay $$ {\varLambda}_b^0\to {pK}^{-}\gamma $$ journal, June 2020

Analyzing lepton flavor universality in the decays Λ b → Λ c ( * ) ( 1 2 ± , 3 2 − ) + ℓ ν ¯ ℓ journal, September 2018

Photon polarization from helicity suppression in radiative decays of polarized to spin-3/2 baryons journal, May 2007

Photon helicity in decays journal, February 2007

Form factors for Λ b → Λ transitions in the soft-collinear effective theory journal, January 2012

Λ b → Λ ℓ + ℓ − form factors, differential branching fraction, and angular observables from lattice QCD with relativistic b quarks journal, April 2016

Form factor counting and HQET matching for new physics in Λ b → Λ c * l ν journal, January 2022

Domain wall QCD with physical quark masses journal, April 2016

First lattice study of semileptonic decays of Λ b and Ξ b baryons journal, June 1998

Precision model-independent bounds from a global analysis of b → c ℓ ν form factors journal, November 2019

Λ b → p ℓ − ν ¯ ℓ and Λ b → Λ c ℓ − ν ¯ ℓ form factors from lattice QCD with relativistic heavy quarks journal, August 2015

Measurement of the Absolute Branching Fraction for Λ c + → Λ e + ν e journal, November 2015

The Chroma Software System for Lattice QCD journal, March 2005

$$\Lambda _b$$ decays into $$\Lambda _c^*\ell \bar{\nu }_\ell $$ and $$\Lambda _c^*\pi ^-$$ $$[\Lambda _c^*=\Lambda _c(2595)$$ and $$\Lambda _c(2625)]$$ and heavy quark spin symmetry journal, May 2019

Measurement of the absolute branching fraction for Λ c + → Λ μ + ν μ journal, April 2017

Title: $Λ_{c} \to Λ^{} (1520)$ form factors from lattice QCD and improved analysis of the $Λ_{b} \to Λ^{} (1520)$ and $Λ_{b} \to Λ_{c}^{*} (2595, 2625)$ form factors

Phenomenology of Λ b → Λ c τ ν ¯ τ $$ {\Lambda}_b\to {\Lambda}_c\tau {\overline{\nu}}_{\tau } $$ using lattice QCD calculations
journal, August 2017

Endpoint relations for baryons
journal, November 2021

Semileptonic decays $\vec{B} π l ν$ and $\vec{D} π l ν$ from lattice QCD
journal, May 2001

Testing lepton flavour universality in semileptonic Λb → Λ c * decays
journal, June 2018

Project of a Super Charm-Tau factory at the Budker Institute of Nuclear Physics in Novosibirsk
journal, September 2013

A lattice study ofΛb semileptonic decay
journal, May 2003

New class of variance-reduction techniques using lattice symmetries
journal, November 2013

$Λ_{b} \to Λ^{*} (1520) ℓ^{+} ℓ^{-}$ form factors from lattice QCD
journal, April 2021

Semileptonic decays of heavy Λ baryons in a quark model
journal, September 2005

The Belle II Physics Book
journal, December 2019

Endpoint symmetries of helicity amplitudes
journal, February 2022

$Λ_{b} \to Λ_{c}^{*} (2595, 2625) ℓ^{-} \bar{ν}$ form factors from lattice QCD
journal, May 2021

Semileptonic $Λ_{b}$ decay to excited $Λ_{c}$ baryons at order $Λ_{QCD} {/ m}_{Q}$
journal, May 1998

Future Physics Programme of BESIII
journal, April 2020

Heavy Quark Expansion of Λb→Λ*(1520) Form Factors beyond Leading Order
journal, March 2021

First measurement of the ratio of branching fractions $B (Λ_{b}^{0} \to Λ_{c}^{+} μ^{-} {\bar{ν}}_{μ}) / B (Λ_{b}^{0} \to Λ_{c}^{+} π^{-})$
journal, February 2009

$Λ_{c} \to Λ l^{+} ν_{l}$ Form Factors and Decay Rates from Lattice QCD with Physical Quark Masses
journal, February 2017

$Λ_{c}$ semileptonic decays in a quark model
journal, March 2017

XSEDE: Accelerating Scientific Discovery
journal, September 2014

RARE DILEPTONIC DECAYS OF Λ _b IN A QUARK MODEL
journal, February 2012

Predicting positive parity $B_{s}$ mesons from lattice QCD
journal, November 2015

$Λ_{b} \to p ℓ^{-} {\bar{ν}}_{ℓ}$ form factors from lattice QCD with static $b$ quarks
journal, July 2013

$Λ_{b} \to Λ ℓ^{+} ℓ^{-}$ form factors and differential branching fraction from lattice QCD
journal, April 2013

Semileptonic decays of heavy Λ's into excited baryons
journal, January 1993

Decay amplitudes to three hadrons from finite-volume matrix elements
journal, April 2021

Erratum to: “Photon helicity in $Λ_{b} \to p K γ$ decays” [Phys. Lett. B 645 (2007) 204]
journal, April 2007

Lattice QCD calculation of $\bar{B} \to Dl \bar{ν}$ decay form factors at zero recoil
journal, December 1999

Theoretical description of the decays $Λ_{b} \to Λ^{(*)} ({\frac{1}{2}}^{\pm}, {\frac{3}{2}}^{\pm}) + J / ψ$
journal, July 2017

Multichannel $1 \to 2$ transition amplitudes in a finite volume
journal, February 2015

Multichannel $0 \to 2$ and $1 \to 2$ transition amplitudes for arbitrary spin particles in a finite volume
journal, October 2015

Bayesian analysis of $b \to s μ^{+} μ^{-}$ Wilson coefficients using the full angular distribution of $Λ_{b} \to Λ (\to p π^{-}) μ^{+} μ^{-}$ decays
journal, February 2020

Semitauonic $b$ -hadron decays: A lepton flavor universality laboratory
journal, February 2022

Zero-recoil sum rules for Λ b → Λ c form factors
journal, December 2015

Nature of the lowest-lying odd parity charmed baryon $Λ_{c} (2595)$ and $Λ_{c} (2625)$ resonances
journal, January 2020

Prospects for New Physics searches with $${{\Lambda } ^0_{\mathrm {b}}} \!\rightarrow {\Lambda } (1520) {{\ell ^+} {\ell ^-}} $$ decays
journal, June 2021

Continuum limit physics from $2 + 1$ flavor domain wall QCD
journal, April 2011

$Λ_{c} \to N$ form factors from lattice QCD and phenomenology of $Λ_{c} \to n ℓ^{+} ν_{ℓ}$ and $Λ_{c} \to p μ^{+} μ^{-}$ decays
journal, February 2018

Angular analysis of the rare decay $$ {\Lambda}_b\to \Lambda (1520)\left(\to N\overline{K}\right){\ell}^{+}{\ell}^{-} $$
journal, June 2019

Semileptonic $Λ_{c}$ decay to $ν l^{+}$ and $Λ (1405)$
journal, January 2016

Review of Particle Physics
journal, August 2020

Covariant approximation averaging
journal, June 2015

Determination of the quark coupling strength |Vub| using baryonic decays
journal, July 2015

The $$ {\Lambda}_b\to {\Lambda}^{\ast }(1520)\left(\to N\overline{K}\right){\mathrm{\ell}}^{+}{\mathrm{\ell}}^{-} $$ decay at low-recoil in HQET
journal, July 2020

Measurement of the Absolute Branching Fraction of the Inclusive Semileptonic $Λ_{c}^{+}$ Decay
journal, December 2018

(A)symmetries of weak decays at and near the kinematic endpoint
journal, March 2014

First lattice QCD calculation of semileptonic decays of charmed-strange baryons Ξ _c *
journal, January 2022

Nonperturbative tuning of an improved relativistic heavy-quark action with application to bottom spectroscopy
journal, December 2012

Towards an amplitude analysis of the decay $$ {\varLambda}_b^0\to {pK}^{-}\gamma $$
journal, June 2020

Analyzing lepton flavor universality in the decays $Λ_{b} \to Λ_{c}^{(*)} ({\frac{1}{2}}^{\pm}, {\frac{3}{2}}^{-}) + ℓ {\bar{ν}}_{ℓ}$
journal, September 2018

Photon polarization from helicity suppression in radiative decays of polarized to spin-3/2 baryons
journal, May 2007

Photon helicity in decays
journal, February 2007

Form factors for $Λ_{b} \to Λ$ transitions in the soft-collinear effective theory
journal, January 2012

$Λ_{b} \to Λ ℓ^{+} ℓ^{-}$ form factors, differential branching fraction, and angular observables from lattice QCD with relativistic $b$ quarks
journal, April 2016

Form factor counting and HQET matching for new physics in $Λ_{b} \to Λ_{c}^{*} l ν$
journal, January 2022

Domain wall QCD with physical quark masses
journal, April 2016

First lattice study of semileptonic decays of $Λ_{b}$ and $Ξ_{b}$ baryons
journal, June 1998

Precision model-independent bounds from a global analysis of $b \to c ℓ ν$ form factors
journal, November 2019

$Λ_{b} \to p ℓ^{-} {\bar{ν}}_{ℓ}$ and $Λ_{b} \to Λ_{c} ℓ^{-} {\bar{ν}}_{ℓ}$ form factors from lattice QCD with relativistic heavy quarks
journal, August 2015

Measurement of the Absolute Branching Fraction for $Λ_{c}^{+} \to Λ e^{+} ν_{e}$
journal, November 2015

The Chroma Software System for Lattice QCD
journal, March 2005

$$\Lambda _b$$ decays into $$\Lambda _c^\ell \bar{\nu }_\ell $$ and $$\Lambda _c^\pi ^-$$ $$[\Lambda _c^*=\Lambda _c(2595)$$ and $$\Lambda _c(2625)]$$ and heavy quark spin symmetry
journal, May 2019

Measurement of the absolute branching fraction for $Λ_{c}^{+} \to Λ μ^{+} ν_{μ}$
journal, April 2017