wovepaper — the arXiv observatory

papers

Publications (84)

hep-ph2020

Chaos in a $Q Q ˉ$ system at finite temperature and baryon density

P. Colangelo, F. De Fazio, N. Losacco

Onset of chaos for the holographic dual of a $Q Q ˉ$ system at finite temperature and baryon density is studied. We consider a string in the $A d S$ Reissner-Nordstrom background…

hep-ph1997

On the QCD Sum Rule Determination of the Strange Quark Mass

P. Colangelo, F. De Fazio, G. Nardulli +1

In the QCD Sum Rule determination of $m_{s}$ using the two-point correlator of divergences of $I^ S = 1$ vector currents, the final uncertainty on $m_{s}$ is mainly due to the hadronic sp…

hep-ph1996

On the Theoretical Understanding of Inclusive $I^_{b}$ Decays

P. Colangelo

I discuss a QCD sum rule determination of the four-quark operator matrix elements contributing to the $I^_{b}$ inclusive decay rates at the order $m_{b}^{- 3}$ . The results suggest that…

hep-ph1999

Using Heavy Quark Spin Symmetry in Semileptonic $B_{c}$ Decays

P. Colangelo, F. De Fazio

The form factors parameterizing the B_c semileptonic matrix elements can be related to a few invariant functions if the decoupling of the spin of the heavy quarks in B_c and in the…

hep-ph2008

B, D and K decays

G. Buchalla, T. K. Komatsubara, F. Muheim +124

With the advent of the LHC, we will be able to probe New Physics (NP) up to energy scales almost one order of magnitude larger than it has been possible with present accelerator fa…

hep-ph1994

Form Factor $A_{0} (q^{2})$ , Non Leptonic $D (B) \to P V$ Transitions and Rare $B \to K^{*} I^^{3}$ Decays

P. Colangelo, F. De Fazio, P. Santorelli

We use three-point function QCD sum rules to calculate the form factor $A_{0} (q^{2})$ appearing in the matrix element of the flavour-changing axial current between the $D (B)$ state an…

hep-ph2009

Investigating AdS/QCD duality through scalar glueball correlators

P. Colangelo, F. De Fazio, F. Jugeau +1

We investigate AdS/QCD duality for the two-point correlation function of the lowest dimension scalar glueball operator, in the case of the IR soft wall model. We point out the role…

hep-ph1999

Radiative Leptonic $B_{c}$ Decays

P. Colangelo, F. De Fazio

We analyze the radiative leptonic $B_{c}$ decay mode: $B_{c} \to ℓ I^½ I^^{3}$ ( $ℓ = e, I^¼$ ) using a QCD-inspired constituent quark model. The prediction: ${\cal B}(B_c \to \ell Î½Î³)\si…

hep-ph2014

Nuclear Shadowing in the Holographic Framework

L. Agozzino, P. Castorina, P. Colangelo

The nucleon structure function $F_{2}^{N}$ computed in a holographic framework can be used to describe nuclear deep inelastic scattering effects provided that a rescaling of the $Q^{2}$ …

hep-ph1995

Strong coupling of excited heavy mesons

P. Colangelo, F. De Fazio, N. Di Bartolomeo +2

We compute the strong coupling constant $G_{B^{**} B I ¨ } (G_{D^{**} D I ¨ })$ , where $B^{**}$ ( $D^{**}$ ) is the $0^{+}$ $P -$ wave $b q ˉ (c q ˉ)$ state, by QCD sum rules and…

hep-ph1994

Couplings of heavy mesons with soft pions in QCD

P. Colangelo

QCD sum rules are used to calculate the couplings of heavy-light quark pseudoscalar and vector mesons ( $D, D^{*}$ and $B, B^{*}$ ) with soft pions, both for finite and infinitely heavy…

hep-ph2017

Investigating thermalization of a strongly interacting non-Abelian plasma

L. Bellantuono, P. Colangelo, F. De Fazio +2

Using gauge/gravity duality methods, we study the relaxation towards equilibrium of strongly interacting non-Abelian matter. We adopt boundary sourcing to drive the system out-of-e…

hep-ph2022

Relations among $B_{c} \to J / I ¨ , I^\cdot_{c}$ form factors

P. Colangelo, F. De Fazio, F. Loparco +2

We analyze the form factors parametrizing the $B_{c} \to J / I ¨ , I^\cdot_{c}$ matrix elements of the operators in a generalized low-energy $b \to c$ semileptonic Hamiltonian. We consider an e…

hep-ph2007

$X (3872) \to D D ˉ I^^{3}$ decays and the structure of X(3872)

P. Colangelo, F. De Fazio, S. Nicotri

It has been suggested that the radiative $X \to D D ˉ I^^{3}$ decay modes are useful to shed light on the structure of the meson X(3872), since the ratio $ R={Î(X \to D^+ D^- Î³) \…

hep-ph2023

On the decay mode $I^_{b} \to X_{s} I^^{3}$

P. Colangelo, F. De Fazio, F. Loparco

We study the inclusive $H_{b} \to X_{s} I^^{3}$ decay with $H_{b}$ a beauty baryon, in particular $I^_{b}$ , employing an expansion in the heavy quark mass at $O (m_{b}^{- 3})$ at leading…

hep-ph1997

Rare B \to K^{(*)} Î½\barÎ½Decays at B Factories

P. Colangelo, F. De Fazio, P. Santorelli +1

We compute the branching fraction of the decays $B \to K I^½ I^ˉ ½$ and $B \to K^{*} I^½ I^ˉ ½$ in the Standard Model. We also comment on the experimental difficulties and procedures t…

hep-ph2007

$D_{s J} (2860)$ resonance and the $s_{ℓ}^{P} = \frac{5}{2}^{-}$ $c s ˉ$ ( $c q ˉ$ ) doublet

P. Colangelo, F. De Fazio, S. Nicotri

We analyze the recently discovered $D_{s J} (2860)$ meson using arguments based on the heavy quark expansion together with the experimental observations. We consider the possible qua…

hep-ph1998

Universal Isgur-Wise form factors from QCD sum rules in HQET

P. Colangelo, F. De Fazio, N. Paver

We review the role of the universal Isgur-Wise functions parameterizing the $B$ meson semileptonic matrix elements to charm states in the infinite heavy quark mass limit. We also d…

hep-ph2003

Coupling $g_{f_{0} K^{+} K^{-}}$ and the structure of $f_{0} (980)$

P. Colangelo, F. De Fazio

We use light-cone QCD sum rules to evaluate the strong coupling $g_{f_{0} K^{+} K^{-}}$ which enters in several analyses concerning the scalar $f_{0} (980)$ meson. The result: $6.2\le g_{f_…

hep-ex2015

The Physics of the B Factories

A. J. Bevan, B. Golob, Th. Mannel +2003

This work is on the Physics of the B Factories. Part A of this book contains a brief description of the SLAC and KEK B Factories as well as their detectors, BaBar and Belle, and da…

hep-ph2005

Bounding effective parameters in the chiral Lagrangian for excited heavy mesons

P. Colangelo, F. De Fazio, R. Ferrandes

We use recent experimental data on charmed mesons to constrain three coupling constants in the effective lagrangian describing the interactions of excited heavy-light mesons with l…

hep-ph1993

Radiative Heavy Meson Transitions

P. Colangelo, F. De Fazio, G. Nardulli

We evaluate the radiative and hadronic decay rates of the $D^{*}$ mesons using the Heavy Quark Effective Theory and the Vector Meson Dominance hypothesis. We also estimate the width…

hep-ph2021

Role of $B_{c}^{+} \to B_{s, d}^{(*)} ℓ ˉ I^½_{ℓ}$ in the Standard Model and in the search for BSM signals

P. Colangelo, F. De Fazio, F. Loparco

The decays $B_{c}^{+} \to B_{a} ℓ ˉ I^½_{ℓ}$ and $B_{c}^{+} \to B_{a}^{*} (\to B_{a} I^^{3}) ℓ ˉ I^½_{ℓ}$ , with $a = s, d$ and $ℓ = e, I^¼$ , are studied in the Standard Model (SM) and in…

hep-ph1996

QCD Sum Rule Analysis of the Decays $B \to K ℓ^{+} ℓ^{-}$ and $B \to K^{*} ℓ^{+} ℓ^{-}$

P. Colangelo, F. De Fazio, P. Santorelli +1

We use QCD sum rules to calculate the hadronic matrix elements governing the rare decays $B \to K ℓ^{+} ℓ^{-}$ and $B \to K^{*} ℓ^{+} ℓ^{-}$ induced by the flavour changing neutr…

hep-ph2002

On three-body B decays to charm

P. Colangelo

I briefly describe the use of the three-body decay modes $B^{0} \to D^{(*) -} D^{(*) 0} K^{+}$ to investigate open issues in charmed meson spectroscopy, and of the time dependent $B^0 (\…

hep-ph1993

QCD Calculation of Heavy Meson Semileptonic Transitions

P. Colangelo

I review the QCD sum rules calculations of the form factors governing the semileptonic decays of charmed and beauty mesons. In particular, I discuss the predicted dependence of the…

hep-ph2002

$B^{-} \to K^{-} I ¨ _{c 0}$ decay from charmed meson rescattering

P. Colangelo, F. De Fazio, T. N. Pham

We study the process $B^{-} \to K^{-} I ¨ _{c 0}$ considering intermediate charmed meson rescattering effects. For this decay mode the naive factorization ansatz would predict a vanishing…

hep-ph2015

Holographic Oddballs

L. Bellantuono, P. Colangelo, F. Giannuzzi

The spectrum of the glueball with $J^{P C} = 0^{--}$ is computed using different bottom-up holographic models of QCD. The results indicate a lowest-lying state lighter than in the det…

hep-ph1995

TESTS OF FACTORIZATION IN COLOR SUPPRESSED NONLEPTONIC B DECAY MODES,

P. Colangelo, C. A. Dominguez, N. Paver

We propose a number of tests of factorization for the color-suppressed nonleptonic decay channels: $B \to K^{(*)} I^\cdot_{c}$ and $B \to K^{(*)} I^\cdot_{c}^{'}$ . The relevant leptonic…

hep-ph1996

On the $b -$ Quark Kinetic Energy in the $I^_{b}$

P. Colangelo, C. A. Dominguez, G. Nardulli +1

We consider the problem of determining the matrix element of the heavy quark kinetic energy operator between $I^_{b}$ baryonic states by three point function QCD sum rules in the Hea…

hep-ph1997

Violations of Local Duality in the Heavy Quark Sector

P. Colangelo, C. A. Dominguez, G. Nardulli

We examine the origin of possible failures of the quark-hadron local duality. In particular, we consider a correlator of two currents comprising heavy quark operators, and compare…

hep-ph1998

Semileptonic and Rare $B$ -meson transitions in a QCD relativistic potential model

P. Colangelo, F. De Fazio, M. Ladisa +3

Using a QCD relativistic potential model, previously applied to the calculation of the heavy meson leptonic constants, we evaluate the form factors governing the exclusive decays $…

hep-ph1996

On the Decay Mode $B^{-} \to I^¼^{-} I^ˉ ½_{I^} ¼ I^^{3}$

P. Colangelo, F. De Fazio, G. Nardulli

A QCD relativistic potential model is employed to compute the decay rate and the photon spectrum of the process $B^{-} \to I^¼^{-} I^ˉ ½_{I^} ¼ I^^{3}$ . The result ${\cal B}(B^- \to Î¼^- {\b…

hep-ph1994

$D^{*}$ Radiative Decays and Strong Coupling of Heavy Mesons with Soft Pions in a QCD Relativistic Potential Model

P. Colangelo, F. De Fazio, G. Nardulli

In the framework of a QCD inspired relativistic potential model, we evaluate radiative decay rates of heavy mesons and their coupling with soft pions. The agreement with the existi…

hep-ph2006

Spin effects in rare $B \to X_{s} I ¨ ^{+} I ¨ ^{-}$ and $B \to K^{(*)} I ¨ ^{+} I ¨ ^{-}$ decays in a single Universal Extra Dimension scenario

P. Colangelo, F. De Fazio, R. Ferrandes +1

We study the branching fractions and the lepton polarization asymmetries of rare $B \to X_{s} I ¨ ^{+} I ¨ ^{-}$ and $B \to K^{(*)} I ¨ ^{+} I ¨ ^{-}$ modes within the Standard Model and in the Appe…

hep-ph1993

QCD Sum Rules and B Decays

P. Colangelo, G. Nardulli, N. Paver

We review some recent applications of QCD sum rules to $B$ -decays. These include the determination of the leptonic constant $f_{B}$ and of the semileptonic transition amplitudes of t…

hep-ph2019

Excited heavy meson decays to light vector mesons: implications for spectroscopy

S. Campanella, P. Colangelo, F. De Fazio

We analyze strong decays of excited charmed and beauty mesons into a light vector meson, exploiting the effective field theory based on heavy quark (HQ) symmetries for heavy mesons…

hep-ph1994

Higgs Search by Neural Networks at LHC

P. Chiappetta, P. Colangelo, P. De Felice +2

We show that neural network classifiers can be used to discriminate Higgs production from background at LHC for $150 < M_{H} < 200$ GeV. The results compare favourably with ordinary mu…

hep-ph2008

FCNC $B_{s}$ and $I^_{b}$ transitions: Standard Model versus a single Universal Extra Dimension scenario

P. Colangelo, F. De Fazio, R. Ferrandes +1

We study the FCNC $B_{s} \to I ¨ I^^{3}, I ¨ I^½ I^ˉ ½$ and $I^_{b} \to I^ I^^{3}, I^ I^½ I^ˉ ½$ transitions in the Standard Model and in a scenario with a single Universal Extra Dimension. In parti…

hep-ph2006

Model independent analysis of a class of $B ˉ_{s}^{0}$ decay modes

P. Colangelo, R. Ferrandes

The widths of a class of two-body $B ˉ_{s}^{0}$ decays induced by $b \to c u ˉ d$ and $b \to c u ˉ s$ transitions are determined in a model-independent way, using $S U (3)_{F}$ …

hep-ph1997

Investigations on CPT Invariance at B-Factories

P. Colangelo, G. Corcella

We study the sensitivity of an asymmetric B-factory to indirect CPT violating effects. We find that both dilepton signals and nonleptonic asymmetries can be used to bound the space…

hep-ph2007

Puzzles in charm spectroscopy

P. Colangelo, F. De Fazio, R. Ferrandes +1

We briefly analyze aspects of open and hidden charm resonances, discussing in particular the mesons $D_{s J} (2860)$ and X(3872).

hep-ph1994

On the coupling of heavy mesons to pions in QCD

P. Colangelo, A. Deandrea, N. Di Bartolomeo +3

We compute the strong coupling constant $g_{P^{*} P I ¨ }$ , with $P$ and $P^{*}$ respectively pseudoscalar and vector heavy mesons by using the QCD sum rules approach. Our computation is…

hep-ph2005

Radiative transitions of $D_{s J}^{*} (2317)$ and $D_{s J} (2460)$

P. Colangelo, F. De Fazio, A. Ozpineci

We study radiative decays of $D_{s J}^{*} (2317)$ and $D_{s J} (2460)$ using light-cone QCD sum rules. In particular, we consider the decay modes $D_{s J}^{*} (2317) \to D_{s}^{*} I^^{3}$ and $D_{sJ}…

hep-ph1997

Electromagnetic Mass Difference of Heavy Mesons

P. Colangelo, M. Ladisa, G. Nardulli +1

Using the Cottingham formula, we give an estimate of the electromagnetic mass splitting of pseudoscalar heavy mesons in the beauty and charm sector. We include in the dispersion re…

hep-ph2019

Probing New Physics with $B ˉ \to I ¨ (770) ℓ^{-} I^ˉ ½_{ℓ}$ and $B ˉ \to a_{1} (1260) ℓ^{-} I^ˉ ½_{ℓ}$

P. Colangelo, F. De Fazio, F. Loparco

The $B$ meson semileptonic modes to $I ¨ (770)$ and $a_{1} (1260)$ are useful to pin down possible non Standard Model effects. The 4d differential $\bar B \to Ï(ÏÏ) \ell^- \bar Î½_\…

hep-ph2001

$D_{s}$ decays to $I^\cdot$ and $I^\cdot^{'}$ final states: a phenomenological analysis

P. Colangelo, F. De Fazio

We consider the semileptonic and nonleptonic $D_{s}$ decay modes to final states with $I^\cdot$ and $I^\cdot^{'}$ . We use QCD sum rules to determine the $D_{s} \to I^\cdot$ form factor $f_{+}^{I^} \cdot$ , a…

hep-ph1999

Analysis of the Three-Body $B \to D^{+} D^{-} I ¨ ^{0}$ Decay

P. Colangelo, F. De Fazio, G. Nardulli +2

The decay process $B \to D^{+} D^{-} I ¨ ^{0}$ is an interesting channel for the investigation of CP violating effects in the $b -$ sector. We write down a decay amplitude constrained by a l…

hep-ph2000

B Meson Transitions into Higher Mass Charmed Resonances

P. Colangelo, F. De Fazio, G. Nardulli

We use QCD sum rules to estimate the universal form factors describing the semileptonic B decays into excited charmed resonances, such as the $1^{-}$ and $2^{-}$ states $D_{1}^{*}$ and $…

hep-ph1998

B decays to excited charm mesons

P. Colangelo, F. De Fazio, N. Paver

We review several aspects of the phenomenology of P-wave $q ˉ Q$ mesons: mass splittings, effective strong couplings and leptonic constants. We also describe a QCD sum rule dete…

hep-ph1996

Leptonic Constant from B Meson Radiative Decay

P. Colangelo, F. De Fazio, G. Nardulli

We propose a method to determine the leptonic decay constant $f_{B^{*}}$ in the infinite heavy quark mass limit from the analysis of the radiative decay mode $B^- \to \ell^- {\bar Î½…

hep-ph2004

Excited Charmed Mesons: Observations, Analyses and Puzzles

P. Colangelo, F. De Fazio, R. Ferrandes

We review the status of recently observed positive parity charmed resonances, both in the non-strange and in the strange sector. We describe the experimental findings, the main the…

hep-ph2015

On thermalization of a boost-invariant non Abelian plasma

L. Bellantuono, P. Colangelo, F. De Fazio +1

Using a holographic method, we further investigate the relaxation towards the hydrodynamic regime of a boost-invariant non-Abelian plasma taken out-of-equilibrium. In the dual desc…

hep-ph1993

Dependence of the Form Factors of $B \to I ¨ ℓ I^½$ on the Heavy Quark Mass

P. Colangelo, P. Santorelli

We use QCD sum rules to analyze the semileptonic transition $B \to I ¨ ℓ I^½$ in the limit $m_{b} \to \infty$ . We derive the dependence of the form factor $F_{1} (0)$ on the heavy quark…

hep-ph1993

Study of the Reactions $B \to D^{} I ¨ I ¨ $ and $B \to D^{} I ¨ I ¨ $

P. Colangelo, F. De Fazio, G. Nardulli

We evaluate the non leptonic decays $B \to D^{*} I ¨ I ¨ $ and $B \to D^{*} I ¨ I ¨ $ in the limit of infinitely heavy quarks, assuming the dominance of intermediate positive parity charmed re…

hep-ph2003

Understanding $D_{s J} (2317)$

P. Colangelo, F. De Fazio

We analyze the hadronic and radiative decay modes of the recently observed $D_{s J} (2317)$ meson, in the hypothesis that it can be identifield with the scalar $s_\ell^P={1\over 2}^+…

hep-ph2009

Holographic Approach to Finite Temperature QCD: The Case of Scalar Glueballs and Scalar Mesons

P. Colangelo, F. Giannuzzi, S. Nicotri

We study scalar glueballs and scalar mesons at $T \neq = 0$ in the soft wall holographic QCD model. We find that, using the Anti-de Sitter-Black Hole metric for all values of the tem…

hep-ph2017

Quarkonium dissociation in a far-from-equilibrium holographic setup

L. Bellantuono, P. Colangelo, F. De Fazio +2

The real-time dissociation of the heavy quarkonium in a strongly coupled boost-invariant non-Abelian plasma relaxing towards equilibrium is analyzed in a holographic framework. The…

hep-ph1995

$I^¥ (4 S) \to B^{0} B^{0} ˉ I^^{3}$ Background at B-Factories

P. Colangelo, G. Corcella, G. Nardulli

We give an estimate of the $C$ -even $B^{0} B^{0} ˉ$ background coming from the radiative decay $I^¥ (4 S) \to B^{0} B ˉ^{0} I^^{3}$ at $B$ -factories. Our result $B(Î¥(4S)\to B^0\bar B^0Î³) \s…

hep-ph2009

Rare $B_{s}$ decays to $I^\cdot$ and $I^\cdot^{'}$ final states

M. V. Carlucci, P. Colangelo, F. De Fazio

We study exclusive $B_{s}$ decays to final states with $I^\cdot$ and $I^\cdot^{'}$ , induced by the rare $b \to s ℓ^{+} ℓ^{-}$ and $b \to s I^½ I^ˉ ½$ transitions. Differential decay rates…

hep-ph1996

Role of Four-Quark Operators in the Inclusive $I^_{b}$ Decays

P. Colangelo, F. De Fazio

We compute by QCD sum rules the matrix elements of the relevant four-quark operators appearing in the expression of the $I^_{b}$ inclusive decay rates at the order $1/ m_{b}^{3}$ . The res…

hep-ph2006

New open and hidden charm spectroscopy

P. Colangelo, F. De Fazio, R. Ferrandes +1

Many new results on open and hidden charm spectroscopy have been obtained recently. We present a short review of the experimental findings in the meson sector, of the theoretical i…

hep-ph1993

Phenomenology of $B_{s}$ Decays

P. Blasi, P. Colangelo, G. Nardulli AND N. Paver

Using the QCD sum rules technique we study several aspects of the phenomenology of the b-flavoured strange meson $B_{s}^{0}$ . In particular, we evaluate the mass of the particle, the l…

hep-ph2018

Configurational Entropy can disentangle conventional hadrons from exotica

P. Colangelo, F. Loparco

We evaluate the Configurational Entropy (CE) for scalar mesons and for $J^{P} = \frac{1}{2}^{+}$ baryons in a holographic approach, varying the dimension of boundary theory operators and…

hep-ph2022

Semileptonic $B_{c}$ decays to $P -$ wave charmonium and the nature of $I ¨ _{c 1} (3872)$

P. Colangelo, F. De Fazio, N. Losacco +2

The hadronic form factors of $B_{c}$ semileptonic decays to the $P -$ wave charmonium 4-plet can be expressed near the zero-recoil point in terms of universal functions, performing a s…

hep-ph2012

New meson spectroscopy with open charm and beauty

P. Colangelo, F. De Fazio, F. Giannuzzi +1

All the available experimental information on open charm and beauty mesons is used to classify the observed states in heavy quark doublets. The masses of some of the still unobserv…

hep-ph2006

Two topics for a discussion on the $b s ˉ$ and $b q ˉ$ systems

P. Colangelo, F. De Fazio, R. Ferrandes

The analysis of the $b s ˉ$ system is an important issue in the Physics programs of the hadron colliders. We discuss two different topics: the structure of the orbitally excited…

hep-ph2000

B decays at the LHC

P. Ball, R. Fleischer, G. F. Tartarelli +67

We review the prospects for B decay studies at the LHC.

hep-ph2012

Holography, chiral Lagrangian and form factor relations

P. Colangelo, J. J. Sanz-Cillero, F. Zuo

We derive all the O(p^6) Chiral Perturbation Theory low-energy constants from a class of gravity dual models of QCD described by the Yang-Mills and Chern-Simons Lagrangian terms, w…

hep-ph2012

Anomalous $A V^{*} V$ vertex function in the soft-wall holographic model of QCD

P. Colangelo, F. De Fazio, F. Giannuzzi +2

We consider the vertex function of two vector and one axial-vector currents using the soft-wall holographic model of QCD with the Chern-Simons term. Two structure functions $w_{L}$ a…

hep-ph2002

On three-body $B^{0} \to D^{-} D^{() 0} K^{+}$ decays and couplings of heavy mesons to light pseudoscalar mesons

P. Colangelo, F. De Fazio

We analyze the decay modes $B^{0} \to D^{*-} D^{0} K^{+}$ and $B^{0} \to D^{*-} D^{* 0} K^{+}$ and, using the available experimental data, we find bounds for the constants g and h describing…

hep-ph1997

On Quark-Hadron Duality in the Heavy Quark Sector

P. Colangelo

I discuss the issue of quark-hadron duality in the system of heavy-light quark mesons. As an example, I consider a correlator of two currents comprising heavy quark operators, and…

hep-ph1993

Radiative $B \to K^{*} I^^{3}$ transition in QCD

P. Colangelo, C. A. Dominguez, G. Nardulli +1

We evaluate the branching ratios of the radiative decays $B \to K^{*} I^^{3}$ , and $B \to K_{1} I^^{3}$ in the framework of three-point function QCD sum rules. We find: $ Î(B \to K^* Î³) / Î…

hep-ph2008

Light scalar mesons in the soft-wall model of AdS/QCD

P. Colangelo, F. De Fazio, F. Giannuzzi +2

We study light scalar mesons in the AdS/QCD soft-wall model with a background dilaton field. The masses and decay constants are compatible with experiment and QCD determinations if…

hep-ph2007

Identifying $D_{s J} (2700)$ through its decay modes

P. Colangelo, F. De Fazio, S. Nicotri +1

We study how to assign the recently observed $D_{s J} (2700)$ meson to an appropriate level of the $c s ˉ$ spectrum by the analysis of its decay modes in final states comprising a…

hep-ph2014

Nuclear Structure Functions at Low- $x$ in a Holographic Approach

L. Agozzino, P. Castorina, P. Colangelo

Nuclear effects in deep inelastic scattering at low $- x$ are phenomenologically described changing the typical dynamical and/or kinematical scales characterizing the free nucleon ca…

nucl-ex2023

Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab

A. Accardi, P. Achenbach, D. Adhikari +441

This document presents the initial scientific case for upgrading the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab (JLab) to 22 GeV. It is the result of a…

hep-ph2003

Nonfactorizable contributions in B decays to charmonium: the case of $B^{-} \to K^{-} h_{c}$

P. Colangelo, F. De Fazio, T. N. Pham

Nonleptonic $B$ to charmonium decays generally show deviations from the factorization predictions. For example, the mode $B^{-} \to K^{-} I ¨ _{c 0}$ has been experimentally observed with…

hep-ph2007

On the light glueball spectrum in a holographic description of QCD

P. Colangelo, F. De Fazio, F. Jugeau +1

We investigate the spectra of light scalar and vector glueballs in a holografic description of QCD with a dilaton background bulk field. In particular, we study how the glueball ma…

hep-ph1998

Universal $I ¨ _{1/2} (y)$ Isgur-Wise Function at the Next-to-Leading Order in QCD Sum Rules

P. Colangelo, F. De Fazio, N. Paver

We use QCD sum rules, in the framework of the Heavy Quark Effective Theory, to calculate the universal form factor $I ¨ _{1/2} (y)$ parameterizing the semileptonic transitions $B \to…

hep-ph1997

QCD Interactions of Heavy Mesons with Pions by Light-Cone Sum Rules

P. Colangelo, F. De Fazio

Light-cone QCD sum rules are employed to compute the strong coupling constants: g_{B^* B^* pi}, g_{B_1 B_0 pi} and g_{B_1 B^* pi}, where (B,B^*) and (B_0,B_1) are negative and posi…

hep-ph2004

The Riddle of Polarization in $B \to V V$ Transitions

P. Colangelo, F. De Fazio, T. N. Pham

Measurements of polarization fractions in $B \to V V$ transitions, with $V$ a light vector meson, show that the longitudinal amplitude dominates in $B^{0} \to I ¨ ^{+} I ¨ ^{-}$ , $B^+ \to Ï^…

hep-ph2005

On the structure of $D_{s J}^{*} (2317)$ and $D_{s J} (2460)$

P. Colangelo, F. De Fazio, R. Ferrandes +1

We discuss the structure of the narrow mesons with charm and strangeness $D_{s J}^{*} (2317)$ and $D_{s J} (2460)$ , stressing the role of the radiative decay modes in shedding light on t…

hep-ph2006

Exclusive $B \to K^{()} ℓ^{+} ℓ^{-}$ , $B \to K^{()} I^½ I^ˉ ½$ and $B \to K^{*} I^^{3}$ transitions in a scenario with a single Universal Extra Dimension

P. Colangelo, F. De Fazio, R. Ferrandes +1

We analyze the exclusive rare $B \to K^{(*)} ℓ^{+} ℓ^{-}$ , $B \to K^{(*)} I^½ I^ˉ ½$ and $B \to K^{*} I^^{3}$ decays in the Applequist-Cheng-Dobrescu model, which is an extension of th…

Publications (84)

Chaos in a QQˉ​ system at finite temperature and baryon density

On the QCD Sum Rule Determination of the Strange Quark Mass

On the Theoretical Understanding of Inclusive I^b​ Decays

Using Heavy Quark Spin Symmetry in Semileptonic Bc​ Decays

B, D and K decays

Form Factor A0​(q2), Non Leptonic D(B)→PV Transitions and Rare B→K∗I^3 Decays

Investigating AdS/QCD duality through scalar glueball correlators

Radiative Leptonic Bc​ Decays

Nuclear Shadowing in the Holographic Framework

Strong coupling of excited heavy mesons

Couplings of heavy mesons with soft pions in QCD

Investigating thermalization of a strongly interacting non-Abelian plasma

Relations among Bc​→J/I¨,I^⋅c​ form factors

X(3872)→DDˉI^3 decays and the structure of X(3872)

On the decay mode I^b​→Xs​I^3

Rare B \to K^{(*)} Î½\barÎ½Decays at B Factories

DsJ​(2860) resonance and the sℓP​=25​− csˉ (cqˉ​) doublet

Universal Isgur-Wise form factors from QCD sum rules in HQET

Coupling gf0​K+K−​ and the structure of f0​(980)

The Physics of the B Factories

Bounding effective parameters in the chiral Lagrangian for excited heavy mesons

Radiative Heavy Meson Transitions

Role of Bc+​→Bs,d(∗)​ℓˉI^½ℓ​ in the Standard Model and in the search for BSM signals

QCD Sum Rule Analysis of the Decays B→Kℓ+ℓ− and B→K∗ℓ+ℓ−

On three-body B decays to charm

QCD Calculation of Heavy Meson Semileptonic Transitions

B−→K−I¨c0​ decay from charmed meson rescattering

Holographic Oddballs

TESTS OF FACTORIZATION IN COLOR SUPPRESSED NONLEPTONIC B DECAY MODES,

On the b− Quark Kinetic Energy in the I^b​

Violations of Local Duality in the Heavy Quark Sector

Semileptonic and Rare B-meson transitions in a QCD relativistic potential model

On the Decay Mode B−→I^¼−I^ˉ½I^​¼I^3

D∗ Radiative Decays and Strong Coupling of Heavy Mesons with Soft Pions in a QCD Relativistic Potential Model

Spin effects in rare B→Xs​I¨+I¨− and B→K(∗)I¨+I¨− decays in a single Universal Extra Dimension scenario

QCD Sum Rules and B Decays

Excited heavy meson decays to light vector mesons: implications for spectroscopy

Higgs Search by Neural Networks at LHC

FCNC Bs​ and I^b​ transitions: Standard Model versus a single Universal Extra Dimension scenario

Model independent analysis of a class of Bˉs0​ decay modes

Investigations on CPT Invariance at B-Factories

Puzzles in charm spectroscopy

On the coupling of heavy mesons to pions in QCD

Radiative transitions of DsJ∗​(2317) and DsJ​(2460)

Electromagnetic Mass Difference of Heavy Mesons

Probing New Physics with Bˉ→I¨(770)ℓ−I^ˉ½ℓ​ and Bˉ→a1​(1260)ℓ−I^ˉ½ℓ​

Ds​ decays to I^⋅ and I^⋅′ final states: a phenomenological analysis

Analysis of the Three-Body B→D+D−I¨0 Decay

B Meson Transitions into Higher Mass Charmed Resonances

B decays to excited charm mesons

Leptonic Constant from B Meson Radiative Decay

Excited Charmed Mesons: Observations, Analyses and Puzzles

On thermalization of a boost-invariant non Abelian plasma

Dependence of the Form Factors of B→I¨ℓI^½ on the Heavy Quark Mass

Study of the Reactions B→D∗I¨I¨ and B→D∗I¨I¨

Understanding DsJ​(2317)

Holographic Approach to Finite Temperature QCD: The Case of Scalar Glueballs and Scalar Mesons

Quarkonium dissociation in a far-from-equilibrium holographic setup

I^¥(4S)→B0B0ˉI^3 Background at B-Factories

Rare Bs​ decays to I^⋅ and I^⋅′ final states

Role of Four-Quark Operators in the Inclusive I^b​ Decays

New open and hidden charm spectroscopy

Phenomenology of Bs​ Decays

Configurational Entropy can disentangle conventional hadrons from exotica

Semileptonic Bc​ decays to P−wave charmonium and the nature of I¨c1​(3872)

New meson spectroscopy with open charm and beauty

Two topics for a discussion on the bsˉ and bqˉ​ systems

B decays at the LHC

Holography, chiral Lagrangian and form factor relations

Anomalous AV∗V vertex function in the soft-wall holographic model of QCD

On three-body B0→D∗−D(∗)0K+ decays and couplings of heavy mesons to light pseudoscalar mesons

On Quark-Hadron Duality in the Heavy Quark Sector

Radiative B→K∗I^3 transition in QCD

Light scalar mesons in the soft-wall model of AdS/QCD

Identifying DsJ​(2700) through its decay modes

Nuclear Structure Functions at Low-x in a Holographic Approach

Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab

Nonfactorizable contributions in B decays to charmonium: the case of B−→K−hc​

On the light glueball spectrum in a holographic description of QCD

Chaos in a $Q Q ˉ$ system at finite temperature and baryon density

On the Theoretical Understanding of Inclusive $I^_{b}$ Decays

Using Heavy Quark Spin Symmetry in Semileptonic $B_{c}$ Decays

Form Factor $A_{0} (q^{2})$ , Non Leptonic $D (B) \to P V$ Transitions and Rare $B \to K^{*} I^^{3}$ Decays

Radiative Leptonic $B_{c}$ Decays

Relations among $B_{c} \to J / I ¨ , I^\cdot_{c}$ form factors

$X (3872) \to D D ˉ I^^{3}$ decays and the structure of X(3872)

On the decay mode $I^_{b} \to X_{s} I^^{3}$

$D_{s J} (2860)$ resonance and the $s_{ℓ}^{P} = \frac{5}{2}^{-}$ $c s ˉ$ ( $c q ˉ$ ) doublet

Coupling $g_{f_{0} K^{+} K^{-}}$ and the structure of $f_{0} (980)$

Role of $B_{c}^{+} \to B_{s, d}^{(*)} ℓ ˉ I^½_{ℓ}$ in the Standard Model and in the search for BSM signals

QCD Sum Rule Analysis of the Decays $B \to K ℓ^{+} ℓ^{-}$ and $B \to K^{*} ℓ^{+} ℓ^{-}$

$B^{-} \to K^{-} I ¨ _{c 0}$ decay from charmed meson rescattering

On the $b -$ Quark Kinetic Energy in the $I^_{b}$

Semileptonic and Rare $B$ -meson transitions in a QCD relativistic potential model

On the Decay Mode $B^{-} \to I^¼^{-} I^ˉ ½_{I^} ¼ I^^{3}$

$D^{*}$ Radiative Decays and Strong Coupling of Heavy Mesons with Soft Pions in a QCD Relativistic Potential Model

Spin effects in rare $B \to X_{s} I ¨ ^{+} I ¨ ^{-}$ and $B \to K^{(*)} I ¨ ^{+} I ¨ ^{-}$ decays in a single Universal Extra Dimension scenario

FCNC $B_{s}$ and $I^_{b}$ transitions: Standard Model versus a single Universal Extra Dimension scenario

Model independent analysis of a class of $B ˉ_{s}^{0}$ decay modes

Radiative transitions of $D_{s J}^{*} (2317)$ and $D_{s J} (2460)$

Probing New Physics with $B ˉ \to I ¨ (770) ℓ^{-} I^ˉ ½_{ℓ}$ and $B ˉ \to a_{1} (1260) ℓ^{-} I^ˉ ½_{ℓ}$

$D_{s}$ decays to $I^\cdot$ and $I^\cdot^{'}$ final states: a phenomenological analysis

Analysis of the Three-Body $B \to D^{+} D^{-} I ¨ ^{0}$ Decay

Dependence of the Form Factors of $B \to I ¨ ℓ I^½$ on the Heavy Quark Mass

Study of the Reactions $B \to D^{} I ¨ I ¨ $ and $B \to D^{} I ¨ I ¨ $

Understanding $D_{s J} (2317)$

$I^¥ (4 S) \to B^{0} B^{0} ˉ I^^{3}$ Background at B-Factories

Rare $B_{s}$ decays to $I^\cdot$ and $I^\cdot^{'}$ final states

Role of Four-Quark Operators in the Inclusive $I^_{b}$ Decays

Phenomenology of $B_{s}$ Decays

Semileptonic $B_{c}$ decays to $P -$ wave charmonium and the nature of $I ¨ _{c 1} (3872)$

Two topics for a discussion on the $b s ˉ$ and $b q ˉ$ systems

Anomalous $A V^{*} V$ vertex function in the soft-wall holographic model of QCD

On three-body $B^{0} \to D^{-} D^{() 0} K^{+}$ decays and couplings of heavy mesons to light pseudoscalar mesons

Radiative $B \to K^{*} I^^{3}$ transition in QCD

Identifying $D_{s J} (2700)$ through its decay modes

Nuclear Structure Functions at Low- $x$ in a Holographic Approach

Nonfactorizable contributions in B decays to charmonium: the case of $B^{-} \to K^{-} h_{c}$

Universal $I ¨ _{1/2} (y)$ Isgur-Wise Function at the Next-to-Leading Order in QCD Sum Rules

The Riddle of Polarization in $B \to V V$ Transitions

On the structure of $D_{s J}^{*} (2317)$ and $D_{s J} (2460)$

Exclusive $B \to K^{()} ℓ^{+} ℓ^{-}$ , $B \to K^{()} I^½ I^ˉ ½$ and $B \to K^{*} I^^{3}$ transitions in a scenario with a single Universal Extra Dimension