Joannis Papavassiliou
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View article: Electromagnetic properties of heavy-light mesons
Electromagnetic properties of heavy-light mesons Open
Within the Bethe–Salpeter framework, we present a computation of space-like electromagnetic form factors for pseudoscalar mesons, including light and heavy-light systems. Our approach employs a flavour-dependent variation of the standard T…
View article: Physics of the gluon mass gap
Physics of the gluon mass gap Open
It has long been known that the gluon propagator in Landau-gauge QCD exhibits a mass gap; and its emergence has been ascribed to the action of the Schwinger mechanism in the gauge sector of QCD. In the present work, we relate this property…
View article: Physics of the gluon mass gap
Physics of the gluon mass gap Open
It has long been known that the gluon propagator in Landau-gauge QCD exhibits a mass gap; and its emergence has been ascribed to the action of the Schwinger mechanism in the gauge sector of QCD. In the present work, we relate this property…
View article: Electromagnetic properties of heavy-light mesons
Electromagnetic properties of heavy-light mesons Open
Within the Bethe-Salpeter framework, we present a computation of space-like electromagnetic form factors for pseudoscalar mesons, including light and heavy-light systems. Our approach employs a flavour-dependent variation of the standard T…
View article: Heavy-light mesons from a flavour-dependent interaction
Heavy-light mesons from a flavour-dependent interaction Open
We introduce a new framework for the physics of heavy-light mesons, whose key element is the effective incorporation of flavour-dependent contributions into the corresponding bound-state and quark gap equations. These terms originate from …
View article: Search for Highly Ionizing Particles in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mi>p</mml:mi></mml:math> Collisions during LHC Run 2 Using the Full MoEDAL Detector
Search for Highly Ionizing Particles in Collisions during LHC Run 2 Using the Full MoEDAL Detector Open
This search for magnetic monopoles (MMs) and high electric charge objects (HECOs) with spins 0, 1/2, and 1, uses for the first time the full MoEDAL detector, exposed to 6.46 fb−1 proton-proton collisions at 13 TeV. The results are interpr…
View article: Gluon mass scale through the Schwinger mechanism
Gluon mass scale through the Schwinger mechanism Open
It has long been argued that the action of the Schwinger mechanism in the gauge sector of Quantum Chromodynamics leads to the generation of a gluon mass scale. Within this scenario, the analytic structure of the fundamental vertices is mod…
View article: Erratum: First Search for Dyons with the Full MoEDAL Trapping Detector in 13 TeV <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mi>p</mml:mi></mml:math> Collisions [Phys. Rev. Lett. <b>126</b>, 071801 (2021)]
Erratum: First Search for Dyons with the Full MoEDAL Trapping Detector in 13 TeV Collisions [Phys. Rev. Lett. <b>126</b>, 071801 (2021)] Open
This corrects the article DOI: 10.1103/PhysRevLett.126.071801.
View article: Heavy-light mesons from a flavour-dependent interaction
Heavy-light mesons from a flavour-dependent interaction Open
We introduce a new symmetry-preserving framework for the physics of heavy-light mesons, whose key element is the effective incorporation of flavour-dependent contributions into the corresponding bound-state and quark gap equations. These t…
View article: Infrared properties of the quark-gluon vertex in general kinematics
Infrared properties of the quark-gluon vertex in general kinematics Open
In the present work we determine the eight form factors of the transversely-projected quark-gluon vertex in general kinematics, in the context of Landau-gauge QCD with two degenerate light dynamical quarks. The study is based on the set of…
View article: Nonperturbative four-gluon vertex in soft kinematics
Nonperturbative four-gluon vertex in soft kinematics Open
We present a nonperturbative study of the form factor associated with the projection of the full four-gluon vertex
\non its classical tensor, for a set of kinematics with one vanishing and three arbitrary external momenta. The
\ntreatment …
View article: Lattice determination of the Batalin-Vilkovisky function and the strong running interaction
Lattice determination of the Batalin-Vilkovisky function and the strong running interaction Open
The Batalin-Vilkovisky function is a central component in the modern formulation of the background field method and the physical applications derived from it. In the present work we report on novel lattice results for this particular quant…
View article: Infrared properties of the quark-gluon vertex in general kinematics
Infrared properties of the quark-gluon vertex in general kinematics Open
In the present work we determine the eight form factors of the transversely-projected quark-gluon vertex in general kinematics, in the context of Landau-gauge QCD with two degenerate light dynamical quarks. The study is based on the set of…
View article: Nonlinear Schwinger mechanism in QCD, and Fredholm alternatives theorem
Nonlinear Schwinger mechanism in QCD, and Fredholm alternatives theorem Open
We present a novel implementation of the Schwinger mechanism in QCD, which fixes uniquely the scale of the effective gluon mass scale and streamlines considerably the procedure of multiplicative renormalization. The key advantage of this m…
View article: MoEDAL Search in the CMS Beam Pipe for Magnetic Monopoles Produced via the Schwinger Effect
MoEDAL Search in the CMS Beam Pipe for Magnetic Monopoles Produced via the Schwinger Effect Open
We report on a search for magnetic monopoles (MMs) produced in ultraperipheral Pb-Pb collisions during Run 1 of the LHC. The beam pipe surrounding the interaction region of the CMS experiment was exposed to 184.07 μb−1 of Pb-Pb collisions…
View article: Nonperturbative four-gluon vertex in soft kinematics
Nonperturbative four-gluon vertex in soft kinematics Open
We present a nonperturbative study of the form factor associated with the projection of the full four-gluon vertex on its classical tensor, for a set of kinematics with one vanishing and three arbitrary external momenta. The treatment is b…
View article: Four-gluon vertex in collinear kinematics
Four-gluon vertex in collinear kinematics Open
To date, the four-gluon vertex is the least explored component of the QCD Lagrangian, mainly due to the vast proliferation of Lorentz and color structures required for its description. In this work we present a nonperturbative study of thi…
View article: Nonlinear Schwinger mechanism in QCD, and Fredholm alternatives theorem
Nonlinear Schwinger mechanism in QCD, and Fredholm alternatives theorem Open
We present a novel implementation of the Schwinger mechanism in QCD, which fixes uniquely the scale of the effective gluon mass and streamlines considerably the procedure of multiplicative renormalization. The key advantage of this method …
View article: Lattice determination of the Batalin-Vilkovisky function and the strong running interaction
Lattice determination of the Batalin-Vilkovisky function and the strong running interaction Open
The Batalin-Vilkovisky function is a central component in the modern formulation of the background field method and the physical applications derived from it. In the present work we report on novel lattice results for this particular quant…
View article: Four-gluon vertex in collinear kinematics
Four-gluon vertex in collinear kinematics Open
To date, the four-gluon vertex is the least explored component of the QCD Lagrangian, mainly due to the vast proliferation of Lorentz and color structures required for its description. In this work we present a nonperturbative study of thi…
View article: MoEDAL search in the CMS beam pipe for magnetic monopoles produced via the Schwinger effect
MoEDAL search in the CMS beam pipe for magnetic monopoles produced via the Schwinger effect Open
We report on a search for magnetic monopoles (MMs) produced in ultraperipheral Pb--Pb collisions during Run-1 of the LHC. The beam pipe surrounding the interaction region of the CMS experiment was exposed to 184.07 \textmu b$^{-1}$ of Pb--…
View article: Computation of the Kugo-Ojima function from lattice simulations
Computation of the Kugo-Ojima function from lattice simulations Open
In addition to its connection with a standard confinement criterion, the Kugo-Ojima function constitutes an indispensable component in a multitude of applications in the gauge sector of QCD.\nIn the present work we report on preliminary re…
View article: Computation of the Kugo-Ojima function from lattice simulations
Computation of the Kugo-Ojima function from lattice simulations Open
In addition to its connection with a standard confinement criterion, the Kugo-Ojima function constitutes an indispensable component in a multitude of applications in the gauge sector of QCD. In the present work we report on preliminary res…
View article: Schwinger displacement of the quark–gluon vertex
Schwinger displacement of the quark–gluon vertex Open
The action of the Schwinger mechanism in pure Yang–Mills theories endows gluons with an effective mass, and, at the same time, induces a measurable displacement to the Ward identity satisfied by the three-gluon vertex. In the present work …
View article: Schwinger displacement of the quark-gluon vertex
Schwinger displacement of the quark-gluon vertex Open
The action of the Schwinger mechanism in pure Yang-Mills theories endows gluons with an effective mass, and, at the same time, induces a measurable displacement to the Ward identity satisfied by the three-gluon vertex. In the present work …
View article: Pinch technique to all orders
Pinch technique to all orders Open
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View article: Nexuses, sphalerons, and fractional topological charge
Nexuses, sphalerons, and fractional topological charge Open
A summary is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the ‘Save PDF’ action button.