Author: "Christopher B. Verhaaren" - Searchworks@Jio Institute Digital Library Search Results

39 results on '"Christopher B. Verhaaren"'

1. Schwinger vs Coleman: Magnetic charge renormalization

Author: Joshua Newey, John Terning, and Christopher B. Verhaaren
Subjects: Solitons Monopoles and Instantons, Duality in Gauge Field Theories, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract The kinetic mixing of two U(1) gauge theories can result in a massless photon that has perturbative couplings to both electric and magnetic charges. This framework can be used to perturbatively calculate in a quantum field theory with both kinds of charge. Here we reexamine the running of the magnetic charge, where the calculations of Schwinger and Coleman sharply disagree. We calculate the running of both electric and magnetic couplings and show that the disagreement between Schwinger and Coleman is due to an incomplete summation of topological terms in the perturbation series. We present a momentum space prescription for calculating the loop corrections in which the topological terms can be systematically separated for resummation. Somewhat in the spirit of modern amplitude methods we avoid using a vector potential and use the field strength itself, thereby trading gauge redundancy for the geometric redundancy of Stokes surfaces. The resulting running of the couplings demonstrates that Dirac charge quantization is independent of renormalization scale, as Coleman predicted. As a simple application we also bound the parameter space of magnetically charged states through the experimental measurement of the running of electromagnetic coupling.
Published: 2024
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2. Slowly rotating Q-balls

Author: Yahya Almumin, Julian Heeck, Arvind Rajaraman, and Christopher B. Verhaaren
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract Q-balls are non-topological solitons arising in scalar field theories. Solutions for rotating Q-balls (and the related boson stars) have been shown to exist when the angular momentum is equal to an integer multiple of the Q-ball charge Q. Here we consider the possibility of classically long-lived metastable rotating Q-balls with small angular momentum, even for large charge, for all scalar theories that support non-rotating Q-balls. This is relevant for rotating extensions of Q-balls and related solitons such as boson stars as it impacts their cosmological phenomenology. arXiv:2302.11589
Published: 2024
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3. Theory, phenomenology, and experimental avenues for dark showers: a Snowmass 2021 report

Author: Guillaume Albouy, Jared Barron, Hugues Beauchesne, Elias Bernreuther, Marcella Bona, Cesare Cazzaniga, Cari Cesarotti, Timothy Cohen, Annapaola de Cosa, David Curtin, Zeynep Demiragli, Caterina Doglioni, Alison Elliot, Karri Folan DiPetrillo, Florian Eble, Carlos Erice, Chad Freer, Aran Garcia-Bellido, Caleb Gemmell, Marie-Hélène Genest, Giovanni Grilli di Cortona, Giuliano Gustavino, Nicoline Hemme, Tova Holmes, Deepak Kar, Simon Knapen, Suchita Kulkarni, Luca Lavezzo, Steven Lowette, Benedikt Maier, Seán Mee, Stephen Mrenna, Harikrishnan Nair, Jeremi Niedziela, Christos Papageorgakis, Nukulsinh Parmar, Christoph Paus, Kevin Pedro, Ana Peixoto, Alexx Perloff, Tilman Plehn, Christiane Scherb, Pedro Schwaller, Jessie Shelton, Akanksha Singh, Sukanya Sinha, Torbjörn Sjöstrand, Aris G. B. Spourdalakis, Daniel Stolarski, Matthew J. Strassler, Andrii Usachov, Carlos Vázquez Sierra, Christopher B. Verhaaren, and Long Wang
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract In this work, we consider the case of a strongly coupled dark/hidden sector, which extends the Standard Model (SM) by adding an additional non-Abelian gauge group. These extensions generally contain matter fields, much like the SM quarks, and gauge fields similar to the SM gluons. We focus on the exploration of such sectors where the dark particles are produced at the LHC through a portal and undergo rapid hadronization within the dark sector before decaying back, at least in part and potentially with sizeable lifetimes, to SM particles, giving a range of possibly spectacular signatures such as emerging or semi-visible jets. Other, non-QCD-like scenarios leading to soft unclustered energy patterns or glueballs are also discussed. After a review of the theory, existing benchmarks and constraints, this work addresses how to build consistent benchmarks from the underlying physical parameters and present new developments for the pythia Hidden Valley module, along with jet substructure studies. Finally, a series of improved search strategies is presented in order to pave the way for a better exploration of the dark showers at the LHC.
Published: 2022
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4. Excited Q-balls

Author: Yahya Almumin, Julian Heeck, Arvind Rajaraman, and Christopher B. Verhaaren
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract Complex scalars in U(1)-symmetric potentials can form stable Q-balls, non-topological solitons that correspond to spherical bound-state solutions. If the U(1) charge of the Q-ball is large enough, it can support a tower of unstable radial excitations with increasing energy. Previous analyses of these radial excitations were confined to fixed parameters, leading to excited states with different charges Q. In this work, we provide the first characterization of the radial excitations of solitons for fixed charge, providing the physical spectrum for such objects. We also show how to approximately describe these excited states analytically and predict their global properties such as radius, energy, and charge. This enables a complete characterization of the radial spectrum. We also comment on the decay channels of these excited states.
Published: 2022
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5. Proca Q-balls and Q-shells

Author: Julian Heeck, Arvind Rajaraman, Rebecca Riley, and Christopher B. Verhaaren
Subjects: Solitons Monopoles and Instantons, Beyond Standard Model, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract Non-topological solitons such as Q-balls and Q-shells have been studied for scalar fields invariant under global and gauged U(1) symmetries. We generalize this frame-work to include a Proca mass for the gauge boson, which can arise either from spontaneous symmetry breaking or via the Stückelberg mechanism. A heavy (light) gauge boson leads to solitons reminiscent of the global (gauged) case, but for intermediate values these Proca solitons exhibit completely novel features such as disconnected regions of viable parameter space and Q-shells with unbounded radius. We provide numerical solutions and excellent analytic approximations for both Proca Q-balls and Q-shells. These allow us to not only demonstrate the novel features numerically, but also understand and predict their origin analytically.
Published: 2021
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6. Spurious poles in the scattering of electric and magnetic charges

Author: John Terning and Christopher B. Verhaaren
Subjects: Duality in Gauge Field Theories, Scattering Amplitudes, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract Theories with both electric and magnetic charges (“mutually non-local” theories) have several major obstacles to calculating scattering amplitudes. Even when the interaction arises through the kinetic mixing of two, otherwise independent, U(1)’s, so that all low-energy interactions are perturbative, difficulties remain: using a self-dual, local formalism leads to spurious poles at any finite order in perturbation theory. Correct calculations must show how the spurious poles cancel in observable scattering amplitudes. Consistency requires that one type of charge is confined as a result of one of the U(1)’s being broken. Here we show how the constraints of confinement and parity conservation on observable processes manages to cancel the spurious poles in scattering and pair production amplitudes, paving the way for systematic studies of the experimental signatures of “dark” electric-magnetic processes. Along the way we demonstrate some novel effects in electric-magnetic interactions, including that the amplitude for single photon production of magnetic particles by electric particles vanishes.
Published: 2020
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7. Breaking mirror twin color

Author: Brian Batell, Wei Hu, and Christopher B. Verhaaren
Subjects: Beyond Standard Model, Spontaneous Symmetry Breaking, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract We investigate simple extensions of the Mirror Twin Higgs model in which the twin color gauge symmetry and the discrete ℤ2 mirror symmetry are spontaneously broken. This is accomplished in a minimal way by introducing a single new colored triplet, sextet, or octet scalar field and its twin along with a suitable scalar potential. This spontaneous ℤ2 breaking allows for a phenomenologically viable alignment of the electroweak vacuum, and leads to dramatic differences between the visible and mirror sectors with regard to the residual gauge symmetries at low energies, color confinement scales, and particle spectra. In particular, several of our models feature a remnant SU(2) or SO(3) twin color gauge symmetry with a very low confinement scale in comparison to ΛQCD. Furthermore, couplings between the colored scalar and matter provide a new dynamical source of twin fermion masses, and due to the mirror symmetry, these lead to a variety of correlated visible sector effects that can be probed through precision measurements and collider searches.
Published: 2020
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8. A minimal model for neutral naturalness and pseudo-Nambu-Goldstone dark matter

Author: Aqeel Ahmed, Saereh Najjari, and Christopher B. Verhaaren
Subjects: Beyond Standard Model, Higgs Physics, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract We outline a scenario where both the Higgs and a complex scalar dark matter candidate arise as the pseudo-Nambu-Goldstone bosons of breaking a global SO(7) symmetry to SO(6). The novelty of our construction is that the symmetry partners of the Standard Model top-quark are charged under a hidden color group and not the usual SU(3) c . Consequently, the scale of spontaneous symmetry breaking and the masses of the top partners can be significantly lower than those with colored top partners. Taking these scales to be lower at once makes the model more natural and also reduces the induced non-derivative coupling between the Higgs and the dark matter. Indeed, natural realizations of this construction describe simple thermal WIMP dark matter which is stable under a global U(1) D symmetry. We show how the Large Hadron Collider along with current and next generation dark matter experiments will explore the most natural manifestations of this framework.
Published: 2020
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9. Breaking mirror twin hypercharge

Author: Brian Batell and Christopher B. Verhaaren
Subjects: Beyond Standard Model, Higgs Physics, Effective Field Theories, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract The Twin Higgs scenario stabilizes the Higgs mass through an approximate global symmetry and has remained natural in the face of increasingly stringent LHC bounds on colored top partners. Two basic structural questions in this framework concern the nature of the twin hypercharge gauge symmetry and the origin of the ℤ2 symmetry breaking needed to achieve the correct vacuum alignment. Both questions are addressed in a simple extension of the Mirror Twin Higgs model with an exact ℤ2 symmetry and a scalar field that spontaneously breaks both twin hypercharge and ℤ2. Due to the ℤ2 symmetry and an approximate U(2) symmetry in the potential, a new hypercharge scalar appears in the visible sector and, like the Higgs, is a pseudo-Nambu-Goldstone boson with a weak-scale mass. Couplings between the hypercharge scalar and matter provide a new dynamical source of twin sector fermion masses. Depending on the nature and size of these couplings, a variety of experimental signatures may arise, including quark and lepton flavor violation, neutrino masses and mixings as well as direct collider probes of the hypercharged scalar. These signals are correlated with the twin matter spectrum, which can differ dramatically from the visible one, including dynamical realizations of fraternal-like scenarios.
Published: 2019
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10. Detecting dark matter with Aharonov-Bohm

Author: John Terning and Christopher B. Verhaaren
Subjects: Beyond Standard Model, Confinement, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract While the evidence for dark matter continues to grow, the nature of dark matter remains a mystery. A dark U(1) D gauge theory can have a small kinetic mixing with the visible photon which provides a portal to the dark sector. Magnetic monopoles of the dark U(1) D can obtain small magnetic couplings to our photon through this kinetic mixing. This coupling is only manifest below the mass of the dark photon; at these scales the monopoles are bound together by tubes of dark magnetic flux. These flux tubes can produce phase shifts in Aharonov-Bohm type experiments. We outline how this scenario might be realized, examine the existing constraints, and quantify the experimental sensitivity required to detect magnetic dipole dark matter in this novel way.
Published: 2019
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11. Light hidden mesons through the Z portal

Author: Hsin-Chia Cheng, Lingfeng Li, Ennio Salvioni, and Christopher B. Verhaaren
Subjects: Beyond Standard Model, Effective Field Theories, Nonperturbative Effects, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract Confining hidden sectors are an attractive possibility for physics beyond the Standard Model (SM). They are especially motivated by neutral naturalness theories, which reconcile the lightness of the Higgs with the strong constraints on colored top partners. We study hidden QCD with one light quark flavor, coupled to the SM via effective operators suppressed by the mass M of new electroweak-charged particles. This effective field theory is inspired by a new tripled top model of supersymmetric neutral naturalness. The hidden sector is accessed primarily via the Z and Higgs portals, which also mediate the decays of the hidden mesons back to SM particles. We find that exotic Z decays at the LHC and future Z factories provide the strongest sensitivity to this scenario, and we outline a wide array of searches. For a larger hidden confinement scale Λ ∼ O (10) GeV, the exotic Z decays dominantly produce final states with two hidden mesons. ATLAS and CMS can probe their prompt decays up to M ∼ 3 TeV at the high luminosity phase, while a TeraZ factory would extend the reach up to M ∼ 20 TeV through a combination of searches for prompt and displaced signals. For smaller Λ ∼ O (1) GeV, the Z decays to the hidden sector produce jets of hidden mesons, which are long-lived. LHCb will be a powerful probe of these emerging jets. Furthermore, the light hidden vector meson could be detected by proposed dark photon searches.
Published: 2019
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12. Singleton portals to the twin sector

Author: Fady Bishara and Christopher B. Verhaaren
Subjects: Beyond Standard Model, Gauge Symmetry, Higgs Physics, Effective Field Theories, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract The mirror twin Higgs framework allows for a natural Higgs mass while being consistent with collider bounds on colored symmetry partners to standard model quarks. This mechanism relies crucially on a discrete symmetry which relates each standard model field to a mirror partner. These partners are charged under gauge groups identical to, but distinct from, those in the standard model. The minimal twin Higgs scenario provides only one low-energy connection between the visible and twin sectors, the light Higgs boson. We present a new class of portals connecting the two sectors, using fields that have no twin partner under the discrete symmetry. Scalar, fermion, and vector states may provide such singleton portals, each with unique features and experimental signatures. The vector portal, in particular, provides a variety of renormalizable interactions relevant for the LHC. We provide concrete constructions of these portals and determine their phenomenology and opportunities to probe the twin sector at the LHC. We also sketch a scenario in which the structure of the twin sector itself can be tested.
Published: 2019
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13. Resolving the Weinberg paradox with topology

Author: John Terning and Christopher B. Verhaaren
Subjects: Scattering Amplitudes, Solitons Monopoles and Instantons, Effective Field Theories, Gauge Symmetry, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract Long ago Weinberg showed, from first principles, that the amplitude for a single photon exchange between an electric current and a magnetic current violates Lorentz invariance. The obvious conclusion at the time was that monopoles were not allowed in quantum field theory. Since the discovery of topological monopoles there has thus been a paradox. On the one hand, topological monopoles are constructed in Lorentz invariant quantum field theories, while on the other hand, the low-energy effective theory for such monopoles will reproduce Weinberg’s result. We examine a toy model where both electric and magnetic charges are perturbatively coupled and show how soft-photon resummation for hard scattering exponentiates the Lorentz violating pieces to a phase that is the covariant form of the Aharonov-Bohm phase due to the Dirac string. The modulus of the scattering amplitudes (and hence observables) are Lorentz invariant, and when Dirac charge quantization is imposed the amplitude itself is also Lorentz invariant. For closed paths there is a topological component of the phase that relates to aspects of 4D topological quantum field theory.
Published: 2019
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14. Dark monopoles and SL(2, ℤ) duality

Author: John Terning and Christopher B. Verhaaren
Subjects: Duality in Gauge Field Theories, Solitons Monopoles and Instantons, Spontaneous Symmetry Breaking, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract We explore kinetic mixing between two Abelian gauge theories that have both electric and magnetic charges. When one of the photons becomes massive, novel effects arise in the low-energy effective theory, including the failure of Dirac charge quantization as particles from one sector obtain parametrically small couplings to the photon of the other. We maintain a manifest SL(2, ℤ) duality throughout our analysis, which is the diagonal subgroup of the dualities of the two un-mixed gauge theories.
Published: 2018
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15. Singlet scalar top partners from accidental supersymmetry

Author: Hsin-Chia Cheng, Lingfeng Li, Ennio Salvioni, and Christopher B. Verhaaren
Subjects: Beyond Standard Model, Discrete Symmetries, Supersymmetric Standard Model, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract We present a model wherein the Higgs mass is protected from the quadratic one-loop top quark corrections by scalar particles that are complete singlets under the Standard Model (SM) gauge group. While bearing some similarity to Folded Supersymmetry, the construction is purely four dimensional and enjoys more parametric freedom, allowing electroweak symmetry breaking to occur easily. The cancelation of the top loop quadratic divergence is ensured by a Z 3 symmetry that relates the SM top sector and two hidden top sectors, each charged under its own hidden color group. In addition to the singlet scalars, the hidden sectors contain electroweak-charged supermultiplets below the TeV scale, which provide the main access to this model at colliders. The phenomenology presents both differences and similarities with respect to other realizations of neutral naturalness. Generally, the glueballs of hidden color have longer decay lengths. The production of hidden sector particles results in quirk or squirk bound states, which later annihilate. We survey the possible signatures and corresponding experimental constraints.
Published: 2018
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16. Breaking mirror twin color

Author: Christopher B. Verhaaren, Brian Batell, and Wei Hu
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, High Energy Physics::Lattice, Spontaneous symmetry breaking, Scalar (mathematics), Electroweak interaction, High Energy Physics::Phenomenology, FOS: Physical sciences, 01 natural sciences, Spontaneous Symmetry Breaking, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Beyond Standard Model, Higgs boson, lcsh:QC770-798, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, Color confinement, 010306 general physics, Mirror symmetry, Scalar field, Gauge symmetry
Abstract: We investigate simple extensions of the Mirror Twin Higgs model in which the twin color gauge symmetry and the discrete $Z_2$ mirror symmetry are spontaneously broken. This is accomplished in a minimal way by introducing a single new colored triplet, sextet, or octet scalar field and its twin along with a suitable scalar potential. This spontaneous $Z_2$ breaking allows for a phenomenologically viable alignment of the electroweak vacuum, and leads to dramatic differences between the visible and mirror sectors with regard to the residual gauge symmetries at low energies, color confinement scales, and particle spectra. In particular, several of our models feature a remnant $SU(2)$ or $SO(3)$ twin color gauge symmetry with a very low confinement scale in comparison to $\Lambda_{\rm QCD}$. Furthermore, couplings between the colored scalar and matter provide a new dynamical source of twin fermion masses, and due to the mirror symmetry, these lead to a variety of correlated visible sector effects that can be probed through precision measurements and collider searches., Comment: 45 pages, 2 figures; Updated to published version
Published: 2020
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17. Ubiquity of gauged <math><mi>Q</mi></math>-shells

Author: Christopher B. Verhaaren, Arvind Rajaraman, and Julian Heeck
Subjects: Physics, Polynomial, Theoretical physics, Field (physics), Simple (abstract algebra), Soliton, Invariant (mathematics), Scalar field, Gauge symmetry
Abstract: Nontopological gauged soliton solutions called Q-balls arise in many scalar field theories that are invariant under a U(1) gauge symmetry. The related, but qualitatively distinct, Q-shell solitons have only been shown to exist for special potentials. We investigate gauged solitons in a generic sixth-order polynomial potential (that contains the leading effects of many effective field theories) and show that this potential generically allows for both Q-balls and Q-shells. We argue that Q-shell solutions occur in many, and perhaps all, potentials that have previously only been shown to contain Q-balls. We give simple analytic characterizations of these Q-shell solutions, leading to excellent predictions of their physical properties.
Published: 2021

18. Singleton portals to the twin sector

Author: Christopher B. Verhaaren and Fady Bishara
Subjects: Quark, Nuclear and High Energy Physics, Particle physics, Higgs Physics, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, ddc:530, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, 010306 general physics, Gauge symmetry, Physics, Large Hadron Collider, 010308 nuclear & particles physics, Singleton, High Energy Physics::Phenomenology, Effective Field Theories, Fermion, High Energy Physics - Phenomenology, Gauge Symmetry, Beyond Standard Model, Higgs boson, lcsh:QC770-798, Phenomenology (particle physics), Discrete symmetry
Abstract: The mirror twin Higgs framework allows for a natural Higgs mass while being consistent with collider bounds on colored symmetry partners to standard model quarks. This mechanism relies crucially on a discrete symmetry which relates each standard model field to a mirror partner. These partners are charged under gauge groups identical to, but distinct from, those in the standard model. The minimal twin Higgs scenario provides only one low-energy connection between the visible and twin sectors, the light Higgs boson. We present a new class of portals connecting the two sectors, using fields that have 'no twin' partner under the discrete symmetry. Scalar, fermion, and vector states may provide such 'singleton' portals, each with unique features and experimental signatures. The vector portal, in particular, provides a variety of renormalizable interactions relevant for the LHC. We provide concrete constructions of these portals and determine their phenomenology and opportunities to probe the twin sector at the LHC. We also sketch a scenario in which the structure of the twin sector itself can be tested., Comment: 32 pages, 7 figures
Published: 2019
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19. Mapping gauged Q -balls

Author: Christopher B. Verhaaren, Rebecca Riley, Arvind Rajaraman, and Julian Heeck
Subjects: High Energy Physics - Theory, Physics, 010308 nuclear & particles physics, FOS: Physical sciences, Charge (physics), Radius, 01 natural sciences, Characterization (materials science), Set (abstract data type), High Energy Physics - Phenomenology, Theoretical physics, High Energy Physics - Phenomenology (hep-ph), High Energy Physics - Theory (hep-th), Simple (abstract algebra), 0103 physical sciences, Soliton, 010306 general physics, Scalar field, Gauge symmetry
Abstract: Scalar field theories with particular U(1)-symmetric potentials contain non-topological soliton solutions called Q-balls. Promoting the U(1) to a gauge symmetry leads to the more complicated situation of gauged Q-balls. The soliton solutions to the resulting set of nonlinear differential equations have markedly different properties, such as a maximal possible size and charge. Despite these differences, we discover a relation that allows one to extract the properties of gauged Q-balls (such as the radius, charge, and energy) from the more easily obtained properties of global Q-balls. These results provide a new guide to understanding gauged Q-balls as well as providing simple and accurate analytical characterization of the Q-ball properties., 19 pages, 6 figures; v2: matches published version. v3: fixed typo in Eq.(3). v4: fixed typos in Fig. 4
Published: 2021
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20. Understanding Q-Balls Beyond the Thin-Wall Limit

Author: Christopher B. Verhaaren, Rebecca Riley, Arvind Rajaraman, and Julian Heeck
Subjects: Physics, High Energy Physics - Theory, 010308 nuclear & particles physics, Differential equation, Numerical analysis, Scalar (mathematics), FOS: Physical sciences, 01 natural sciences, Nonlinear differential equations, Theoretical physics, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), High Energy Physics - Theory (hep-th), Thin wall, 0103 physical sciences, Quantum field theory, 010306 general physics
Abstract: Complex scalar fields charged under a global U(1) symmetry can admit non-topological soliton configurations called Q-balls which are stable against decay into individual particles or smaller Q-balls. These Q-balls are interesting objects within quantum field theory, but are also of phenomenological interest in several cosmological and astrophysical contexts. The Q-ball profiles are determined by a nonlinear differential equation, and so generally require solution by numerical methods. In this work, we derive analytical approximations for the Q-ball profile in a polynomial potential and obtain simple expressions for the important Q-ball properties of charge, energy, and radius. These results improve significantly on the often-used thin-wall approximation and make it possible to describe Q-balls to excellent precision without having to solve the underlying differential equation., 26 pages, v2: matches published version; v3: fixed typo in Eq.(3)
Published: 2020

21. Dynamical evidence for a fifth force explanation of the ATOMKI nuclear anomalies

Author: Christopher B. Verhaaren, Jonathan L. Feng, and Tim M. P. Tait
Subjects: Particle physics, Nuclear Theory, nucl-th, FOS: Physical sciences, nucl-ex, Atomic, High Energy Physics - Experiment, Nuclear Theory (nucl-th), High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Particle and Plasma Physics, Effective field theory, Nuclear, Nuclear Experiment (nucl-ex), Nuclear Experiment, Pseudovector, Boson, Physics, Gauge boson, Quantum Physics, hep-ex, Fifth force, Molecular, Parity (physics), hep-ph, Quantum number, Nuclear & Particles Physics, Pseudoscalar, High Energy Physics - Phenomenology, Astronomical and Space Sciences
Abstract: Recent anomalies in $^8$Be and $^4$He nuclear decays can be explained by postulating a fifth force mediated by a new boson $X$. The distributions of both transitions are consistent with the same $X$ mass, 17 MeV, providing kinematic evidence for a single new particle explanation. In this work, we examine whether the new results also provide dynamical evidence for a new particle explanation, that is, whether the observed decay rates of both anomalies can be described by a single hypothesis for the $X$ boson's interactions. We consider the observed $^8$Be and $^4$He excited nuclei, as well as a $^{12}$C excited nucleus; together these span the possible $J^P$ quantum numbers up to spin 1. For each transition, we determine whether scalar, pseudoscalar, vector, or axial vector $X$ particles can mediate the decay, and we construct the leading operators in a nuclear physics effective field theory that describes them. Assuming parity conservation, the scalar case is excluded and the pseudoscalar case is highly disfavored. Remarkably, however, the protophobic vector gauge boson, first proposed to explain only the $^8$Be anomaly, also explains the $^4$He anomaly within experimental uncertainties. We predict signal rates for other closely related nuclear measurements, which, if confirmed, will provide overwhelming evidence that a fifth force has been discovered., Comment: 32 pages, 6 figures; Corrected small typos and added references
Published: 2020

22. A Minimal Model for Neutral Naturalness and pseudo-Nambu-Goldstone Dark Matter

Author: Christopher B. Verhaaren, Aqeel Ahmed, Saereh Najjari, and Physics
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Higgs Physics, 010308 nuclear & particles physics, Spontaneous symmetry breaking, Scalar (mathematics), Dark matter, High Energy Physics::Phenomenology, FOS: Physical sciences, hep-ph, 01 natural sciences, Symmetry (physics), Standard Model, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Naturalness, 0103 physical sciences, Beyond Standard Model, Higgs boson, lcsh:QC770-798, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, 010306 general physics, Boson
Abstract: We outline a scenario where both the Higgs and a complex scalar dark matter candidate arise as the pseudo-Nambu-Goldstone bosons of breaking a global $SO(7)$ symmetry to $SO(6)$. The novelty of our construction is that the symmetry partners of the Standard Model top-quark are charged under a hidden color group and not the usual $SU(3)_c$. Consequently, the scale of spontaneous symmetry breaking and the masses of the top partners can be significantly lower than those with colored top partners. Taking these scales to be lower at once makes the model more natural and also reduces the induced non-derivative coupling between the Higgs and the dark matter. Indeed, natural realizations of this construction describe simple thermal WIMP dark matter which is stable under a global $U(1)_D$ symmetry. We show how the Large Hadron Collider along with current and next generation dark matter experiments will explore the most natural manifestations of this framework., 33 pages, 14 figures and 1 table; v2 Minor updates to indirect detection analysis, published version
Published: 2020

23. HE-LHC: The High-Energy Large Hadron Collider Future Circular Collider Conceptual Design Report Volume 4

Author: Pushpalatha C Bhat, B. Seeber, C. Pagliarone, Marco Statera, Victor P. Goncalves, Daria Astapovych, W. Bartmann, S. Iwamoto, M. Mentink, Alessandro Tricoli, E. R. Bielert, Laurent Chevalier, Patrick Koppenburg, Marco Calviani, C. Montag, P. Spiller, Jan Uythoven, P. Di Nezza, G. Guillermo Canton, B. Sailer, Markus Elsing, Sara Khatibi, Luca Vecchi, Luigi Palumbo, J. P. Penttinen, T. Podzorny, Maneesh Kumar, J. M. Rifflet, C. Kotnig, Jean Zinn-Justin, Christopher B. Verhaaren, A. Chernoded, Alessandro Bertarelli, L. M. Tkachenko, C. Koeberl, P. J. Mallon, M. Takeuchi, W. Venturini Delsolaro, G. Lamanna, S. Weinzierl, J. Gao, W. Kaabi, David D'Enterria, D. Barna, Paolo Castelnovo, Rajat Gupta, Oliver Boine-Frankenheim, Adarsh Pyarelal, Andreas Salzburger, Tessa Charles, M.E. Biagini, O. Panella, M. Stuart, A. Kollegger, V. Garcia Diaz, Olcay Bolukbasi, Maurizio Pierini, H. Aksakal, Tord Riemann, Abhishek M. Iyer, V. Shiltsev, D. Buttazzo, J. Blümlein, Prateek Agrawal, L. Sestini, Martin Bauer, Felicitas Pauss, S. Fiorendi, F. Bossu, Marco Nardecchia, C. Leonidopoulos, Wojciech Kotlarski, A. Saba, I. Bautista-Guzmán, W. Hillert, Giorgio Ambrosio, T. Lehtinen, Michael Andrew Parker, Silvia Taroni, Gian F. Giudice, Ph. Lebrun, Johann A. Briffa, T. Risselada, Giuseppe Lerner, A. Lechner, L. S. Miralles, M. Kuze, J. M. Valet, P. S. B. Dev, S. Holleis, Ph. Schwemling, M. Biglietti, S. Banerjee, Thomas Schörner-Sadenius, A. Sanz Ull, V. Tikhomirov, S. Savelyeva, Jiayin Gu, D. Zhou, Federico Ravotti, S. A. Bogacz, Daniele Mirarchi, R. Tomás García, Yann Coadou, F. Yu, Y. Cai, T. Lari, F. Holdener, D. Shwartz, C. Bhat, Ramesh Gupta, Markus Klute, E. Palmieri, P. Collier, Branislav Sitar, Yves Sirois, Livio Fanò, S. Rojas-Torres, E. Locci, Ruben Garcia Alia, I. Božović Jelisavić, R. Chehab, J. A. Aguilar-Saavedra, M. Pasquali, A. Di Cicco, Bernhard Auchmann, Klaus Heinemann, Alessia Tricomi, D. Lucchesi, B. Haerer, M. Morrone, Paolo Giacomelli, Sonia Carra, A. Senol, Ivan Koop, Luca Silvestrini, Anna Stakia, Heather Gray, E. Skordis, A. D. Kovalenko, Paul Langacker, R. Li, Bernardo Bordini, R. Rata, Arjan Verweij, Shehu S. AbdusSalam, Andrey Karyukhin, U. van Rienen, Gianluigi Arduini, Bernhard Holzer, S. A. Nikitin, S. S. Kozub, Satoshi Mishima, B. Di Micco, S. Izquierdo Bermudez, N. Pukhaeva, Nigel Watson, F. Prino, Jean-Michel Sallese, Sotirios Vlachos, Alessandro Vicini, A. Valassi, Daniel Treille, F. Dordei, A. M. Fernandez Navarro, B. Dziewit, Marcello Abbrescia, J. M. Hauptman, I. Chaikovska, Paolo Giubellino, Michael J. Baker, V.V. Kashikhin, Friedrich Lackner, Filippo Sala, A. Langner, D. Pulikowski, H. Eriksson, Matteo Turri, Andrea Wulzer, M. Aiba, Lisa Borgonovi, I. Morozov, V. Haurylavets, J. F. Croteau, S. Boselli, L. A. Gonzalez Gomez, Claudia Tambasco, F. Mahmoudi, Sébastien Descotes-Genon, A. Luciani, Pavel Piminov, M. Varasteh, T. Herzig, Sandra Aumon, Cristina Bernini, Joseph Bramante, Roberta Arnaldi, G. Zick, Daniel Schulte, R. Santoro, Anna Kulesza, I. Turk Cakir, M. Nonis, Silvia Posada Arias, Livia Soffi, T. Wojtoń, E. Cennini, Florian Bauer, B. Rousset, J.-L. Grenard, C. Neubüser, Frederic Derue, Loukas Gouskos, Rainer Wallny, G. Calderini, M. Merk, M. Mühlegger, Roberto Cimino, M. Ramsey-Musolf, P. Rebello Teles, Mario Galanti, Mikhail Shaposhnikov, A. Andreazza, Maria Vittoria Garzelli, Masaya Ishino, José W. F. Valle, Colin Bernet, G. Velev, Cristina Botta, E. Fischer, J. Malclés, Giuseppe Montenero, Tripurari Srivastava, E. Renner, Shahnam Gorgi Zadeh, D. Cantore-Cavalli, Paul Laycock, J. Komppula, Simon C. Hopkins, Helmut Burkhardt, Eric Lancon, I. Aichinger, Andre Sznajder, F. Bordry, Massimo Giovannozzi, Aidan Robson, Anna Giunta, A. Carvalho, S. Farinon, Daniel Wollmann, M. Fouaidy, Martti Raidal, R. Gerard, Giovanni Volpini, U. Niedermayer, A. Alekou, Alexander J.G. Lunt, Vincenzo Cavasinni, Andrzej Siodmok, U. Kaya, Matthias Schott, Marumi Kado, S. A. Arsenyev, José Zurita, John Osborne, Patrick Meade, Gianmarco Bovone, G. Li, Klaus Schlenga, Antti Stenvall, D. Duellmann, Werner Riegler, I. Garzia, Yasuyuki Okumura, G. Pikurs, F. Maltoni, Massimo Sorbi, M. Arzeo, B. Strauss, Y. W. Baek, Mauro Chiesa, K. Ilyina-Brunner, Javier L. Albacete, R. Farinelli, C. Pes, Nicolas Morange, S. M. Zernov, U. Wagner, Emmanuelle Perez, G. G. Da Silveira, J. Neundorf, Néstor Armesto, T. Hahn, Roman N. Lee, Roderik Bruce, B. Y. Sharkov, T. du Pree, G. Cibinetto, Evelin Meoni, R. Rinaldesi, James A. Ellison, Radim Slovak, Silvia Franchino, Mikko Laine, T. Pugnat, S. P. Das, Yuji Enari, Emanuela Barzi, Cihan Bayindir, R. Boels, Jana Faltova, M. Moreno Llácer, Scott A. Yost, Michael Spannowsky, Florian Burkart, Marcin Chrzaszcz, K. Suzuki, Luca Trentadue, S. Masciocchi, Gilad Perez, Steve Peggs, K. Sugita, Eleonora Belli, Carmine Senatore, K. Y. Oyulmaz, Aldo Deandrea, Irakli Minashvili, Desmond P. Barber, M. I. Martínez-Hernández, A. Apyan, S. Petracca, Mikael Chala, Urs Achim Wiedemann, T. Sian, Olivier Deschamps, R. Monge, G. Avrillaud, Jan Kieseler, Hubert Spiesberger, J. Maitre, G. D. Shirkov, M. Hofer, Emanuela Sirtori, Sinan Kuday, Kirill Skovpen, Sara Casalbuoni, Johann Usovitsch, N. Chen, G. Tejeda-Muñoz, F. Bellini, E. Chyhyrynets, Michael Stöger-Pollach, M. Vogel, J. G. Mendes Saraiva, A. Rivetti, M. Podeur, Luc Poggioli, V. A. Gromov, R. Sirvinskaite, S. B. Leith, Giancarlo D'Ambrosio, Tony Price, Philippe Mermod, Rabindra N. Mohapatra, T. Mitshuhashi, Koji Terashi, Leonel Ferreira, L. Vale Silva, N. Muchnoi, J. L. Stanyard, Thomas Marriott-Dodington, A. Andriatis, Oleg Solovyanov, A. Daljevec, A. Butterworth, S. Myers, D. Chanal, Tatiana Pieloni, M. Rodríguez-Cahuantzi, G. Nardini, D. Boscherini, Kazuhito Ohmi, James Molson, S. Kowalski, Christoph Haberstroh, Martin Aleksa, K. Kershaw, M. Mulder, Leonid Rivkin, G. Vorotnikov, Luigi Salvatore Esposito, J. Kalinowski, Michele Cascella, Francesco Giffoni, Alessandro Polini, Georges Azuelos, M. Prioli, Wolfgang Altmannshofer, S. K. Patra, H. J. He, J. J. Aguilera-Verdugo, Hannu Paukkunen, P. Chomaz, Shoji Asai, Nicolas Magnin, Gavin P. Salam, R. Wang, F. Avino, Alexander Romanenko, A. Rossi, Steve Muanza, Richard Ruiz, Dmitry Teytelman, S. Klöppel, S. Atieh, M. Mohammadi Najafabadi, L. Apolinario, Andrea Tesi, M. Maggiora, A. Falkowski, Janusz Gluza, M. Sauvain, Hamzeh Khanpour, S. Chance, Ansgar Denner, Ma. Greco, Andreas Papaefstathiou, Manuela Boscolo, Joydeep Chakrabortty, E. Franco, R. R. Bosley, G. Peón, Fred Olness, Simone Alioli, Andrea Gaddi, M. K. Sullivan, M. Segreti, M. Panareo, Florian Goertz, Z. G. Zhao, H. Chanal, O. Martin, P. Azzurri, Agnieszka Chmielinska, M. Kordiaczyńska, O. Brunner, J. Von Ahnen, Jose Santiago, K. Foraz, Y. Alexahin, Marcello Mannelli, Christian Schwanenberger, S. Ganjour, Simone Marzani, T. M. Taylor, S. Di Vita, J. Womersley, I. Karpov, Valentina Morretta, Saverio D'Auria, Patrick Draper, B. Hacışahinoğlu, E. Gorini, Andrew J. Long, S. La Mendola, G. Zevi Dell Porta, I. Abdyukhanov, M. Cobal, Luca Marzola, E. Rochepault, A. Kusina, German Rodrigo, R. Schmidt, Jan Steggemann, E. Premat, P. Slavich, F. Gianotti, P. Jarry, Ram Krishna Dewanjee, L. Felsberger, T. Martinez, A. Niemi, Jürgen Reuter, P. A. Bruckman de Renstrom, Ryu Sawada, J. T. Childers, Gelsomina Catalano, P. Barjhoux, O. R. Blanco-García, Pilar Hernández, H. Correia-Rodrigues, V. Ippolito, S. De Curtis, Juan Rojo, Ayberk Yilmaz, S. Baird, Morteza Khatiri Yanehsari, Enrico Scomparin, Daniel Appelö, J. Kozaczuk, Matthew Jones, B. Caiffi, C. Del Bo, Susanna Guiducci, Giuliano Panico, M. Knecht, J. Coupard, M. Ciuchini, H. Kritscher, Claire Gwenlan, P. Costa Pinto, Thibaut Lefèvre, N. Bellegarde, Christian Scheuerlein, P. Ferreira da Silva, M. Verducci, X. Ruan, H. Pikhartova, Juan M. O'Callaghan, Kazuro Furukawa, D. Saez de Jauregui, Maria Rescigno, Stephan Eisenhardt, Andrea Dainese, Z. Drásal, G. H. Corral, J. M. Camalich, John Ellis, E. Gabrielli, L. Rumyantsev, A. Caliskan, K. Brunner, K. Tang, P. Sopicki, J. Fan, Marcin Kucharczyk, S. Gorgi Zadeh, Carlos A. Salgado, Simone Bologna, Y. Muttoni, A. Chancé, Patrick Jenny, Mark Boland, G. Yang, G. Wilkinson, Roger J. Hernández-Pinto, M. Novák, Gennady Stupakov, E. Jensen, Lance D. Cooley, Torbjörn Sjöstrand, S. Su, Matthew Luzum, J. Casas, Per Osland, T. Robens, Oscar A. Sampayo, Evgeny Levichev, P. N. Ratoff, G. Rolandi, M. A. Valdivia Garcia, Anthony Keith Morley, L. van Riesen-Haupt, A. Sublet, M. A. Mazzoni, J.L. Gutierrez, A. Abramov, Abbas Kenan Ciftci, A. Provino, L. Delle Rose, John Fox, Barry M. Dillon, V. Smirnov, G. N. Taylor, Anke-Susanne Müller, C. Pira, Fulvio Piccinini, A. Faus-Golfe, Pietro Antonioli, S. Sanfilippo, Julien Cogan, A. Ribon, Andrew Hutton, Frank Zimmermann, Lev Dudko, Erez Etzion, J. Polinski, G. Bencivenni, M. Gil Costa, L. K. Gladilin, Yannis Papaphilippou, Michael Spira, Maria Paola Lombardo, M. Fiascaris, Darius A. Faroughy, S. O. Kara, Peter Braun-Munzinger, A. Wohlfahrt, A. A. Krasnov, S.A. Gourlay, W. Da Silva, Jacqueline Keintzel, Radja Boughezal, Renat Sadykov, L. R. Sulak, Valentin V. Khoze, T. Tydecks, S. Puławski, Daniel de Florian, Pedro Schwaller, A. Akay, Nicola Serra, Sukanta Dutta, Christophe Royon, Alessandro Ricci, A. Kuendig, C. G. Honorato, K. Kołodziej, L. Deniau, Michael Kramer, J. Ferradas Troitino, A. Arbey, A. M. Staśto, Marcel Demarteau, Ralph Aßmann, O. Grimm, D. Forkel-Wirth, Owain Rhodri Jones, A. M. Kolano, G. Chiarello, William Trischuk, Andrea Dell'Acqua, Elisabetta Gallo, H. Song, Frank Petriello, N. Ibarrola, C. Colldelram, A. I. Ryazanov, A. Meier, Phillip Allport, J. de Blas, S. Chattopadhyay, Massimo Florio, X. Jiang, Bertrand Baudouy, T. Otto, Tevong You, Christoph Englert, Roberto Pittau, G. M. Bilei, Matthew McCullough, N. S. Ramírez-Uribe, J. Charles, Amalia Ballarino, Federico Antinori, A. V. Kotwal, P. Le Guen, Berndt Müller, Chiara Roda, Xavier Buffat, D. K. Hong, Matthias Liepe, G. Gorine, V. A. Okorokov, D. Bozzini, N. Simand, Giuseppe Francesco Tartarelli, C. Marquet, R. Contino, A. M. Teixeira, R. Trant, Roberto Losito, M. Quispe, Valery I. Telnov, Helga Timko, D. Lissauer, Giulio Aielli, Giorgio Chiarelli, M. J. Baldwin, A. Winter, X. Sarasola, E. E. Boos, Aleandro Nisati, Cedric Garion, Monica D'Onofrio, S. M. Gascon-Shotkin, Daniele Barducci, G. Rosaz, Nathaniel Craig, L. D’Aloia Schwartzentruber, A. Falou, A. Henriques, Tobias Hurth, Michael Eisterer, Andreas Grau, Austin Ball, D. Delikaris, P. A. McIntosh, E. Graverini, Kadri Ozdemir, F. Valchkova, Marco Zanetti, Guenakh Mitselmakher, S. Albergo, Peter Levai, Caterina Vernieri, F. Stivanello, Michael Barnes, Henri Bachacou, Daniel Fournier, L. T. Wang, D. Boutin, S. Moretti, B. Riemann, Michael Murray, Aleksandr Azatov, C. T. A. Cook, Valentina Maria Cairo, J. B. De Vivie De Regie, H. Schmickler, M. Schenk, Georgios Voutsinas, André Schöning, S. G. Bondarenko, Giorgio Bellomo, Andrei Seryi, Jane Nachtman, Clement Helsens, E. De Lucia, Jakob Salfeld-Nebgen, Lorenzo Pezzotti, Z. Townsend, B. Dalena, Mogens Dam, Yasar Onel, Yi-Ming Zhong, B. Curé, A. A. Kolomiets, A. M. Valente-Feliciano, Laurette Ponce, David Olivier Jamin, P. Krkotic, Alexandre Louzguiti, Marina Putti, Holger Podlech, Petr Volkov, M. Angelucci, F. Duval, I. Hiekkanen, W. M. Yao, Giancarlo Ferrera, C. Lorin, Y. Dydyshka, Kurt R. Peters, Gergely Gabor Barnafoldi, V. Vysotsky, V. Arı, E. Pilicer, M. Chamizo-Llatas, G. Kuhlmann, Hans Quack, R. Valizadeh, Tiina Salmi, Thomas Kramer, Adam Jeff, A. Abada, J. M. Duval, J. Abelleira Fernandez, A. Leveratto, E. Tal Hod, X. Wu, Laurent Serin, Sarah Aull, Samuele Mariotto, A. Poiron, Sabine Riemann, P. Selva, V. I. Pantsyrny, Gianluca Valentino, K. Kahle, S. Aune, K. Potamianos, Eros Cazzato, M. Giovannetti, Petr Mandrik, S. Sidorov, F. Collamati, Simone Gilardoni, S. Bertolucci, Alexander V. Zlobin, Mehmet Sahin, Marco Delmastro, G. Aydın, A. Doblhammer, Alan S. Cornell, S. J. De Jong, M. Caccia, M. Lueckhof, P. Sollander, Mauro Taborelli, J. Shelton, Frank Gerigk, Robert Rimmer, Ayres Freitas, Pierluigi Bruzzone, Brajesh K. Singh, K. Keppel, N. Alipour Tehrani, C. Prasse, Louis Rinolfi, Emma Slade, W. Flieger, Alexey Dudarev, H. J. Yang, T. Köttig, L. Mether, C. Weiland, Andrea Malagoli, Sunghoon Jung, F. Conventi, I. Tropin, G. H. A. Viehhauser, Tomas Davidek, Y. O. Günaydin, Daniel Andreas Britzger, F. Toral, James John Brooke, R. Steerenberg, G. Morello, Mauro Migliorati, Alexej Grudiev, C. Tetrel, Wolfgang Höfle, J. V. Minervini, L. García Tabarés, V. Yermolchik, Claude Guyot, D. Guadagnoli, Giorgio Vallone, N. De Filippis, Oleksii Beznosov, P. Charitos, N. Schwerg, Ahmed Hammad, P. Manil, F. Niccoli, Lydia Iconomidou-Fayard, R. Aleksan, K. Hahn, P. Meridiani, Peter Skands, Tobias Golling, Lucio Rossi, G. Gobbi, Michael Hance, A. J. Barr, V. Del Duca, V. Guzey, M. Pont, Michele Selvaggi, Oliver Brüning, J. Barreiro Guimarães da Costa, A. Drago, Y. Zhang, Giovanni Punzi, Viktor Matveev, Anadi Canepa, Clemens Lange, B. L. Militsyn, Martijn Mulders, Max Klein, V. D’Auria, M. Mylona, Valeria Braccini, S. DasBakshi, David Calvet, Sophia Borowka, David Marzocca, S. Jadach, A. A. Pankov, Christophe Ochando, A. A. Tudora, I. Masina, Jure Zupan, A. Preinerstorfer, Benjamin Fuks, H. K. Soltveit, G. Rolando, E.E. Perepelkin, T. G. Rizzo, Saleh Sultansoy, Federico Roncarolo, K. Elsener, R. Q. Pan, P. Zhuang, David Attié, Jac Perez, K. Kravalis, F. Anulli, V. Ruhlmann-Kleider, S. Malvezzi, Steffen A. Bass, E. La Francesca, Heinz Pernegger, K. Grzanka, M. T. Tiirakari, Alberto Ventura, Alessandro Cerri, Marco Peruzzi, Eric Montesinos, O. Etisken, F. Grancagnolo, S. Kartal, H. Humer, Oliver Fischer, M. Primavera, Marco Toliman Lucchini, P. Vedrine, Felix Kling, M. Altınlı, Sergio Calatroni, C. Han, Olivier Leroy, R. T. D’Agnolo, N. Klinkenberg, A. Audurier, Tatsushi Nakamoto, Ali Bozbey, Bernd A. Kniehl, Carl J. Debono, I. P. J. Shipsey, Gregorio Bernardi, Paolo Nason, William James Fawcett, J. M. Jiménez, D. Denisov, M. Serluca, David Curtin, Arif Akhundov, M. García Pérez, Iacopo Vivarelli, Emanuele Bacchiocchi, Markus Zerlauth, Julia Hrdinka, F. Butin, F. Müller, D. Tikhonov, Jorg Wenninger, A. Kilic, Fabrizio Ferro, J. Tanaka, S. A. Antipov, Miroslav Atanasov, S. Kuttimalai, A. Y. Starikov, F. R. Blánquez, S. V. Furuseth, G. Gaudio, L. Malgeri, J. Curti, B. Turbiarz, S. Li, A. Romanov, Costas G. Papadopoulos, Brennan Goddard, Frank Krauss, Lidija Zivkovic, Toms Torims, Michaela Lackner, D. A. Lyubimtsev, G. Borghello, J. F. Grosse-Oetringhaus, A. Bogomyagkov, H. Duran Yildiz, N. Foppiani, Arthur Schaffer, J. Zhou, D. Liberati, Vincenzo Guidi, Naeem A. Tahir, M. Besançon, Daniel Schoerling, Joe Incandela, Giacomo Polesello, O. Cakir, I. Ruehl, Ruggero Vaglio, Z. Zhang, Bruno Spataro, Davide Tommasini, F. Millet, H. D. Yoo, Carlo V. Fiorio, S. Deghaye, C. Bozzi, A. Shivaji, G. Corcella, I. Bellafont, Valentina Mariani, D. E. Martins, Michael Syphers, C. Hati, Peter Marquard, Nicola Bacchetta, Matthew Crouch, David Woog, Oliver Kortner, A. Milanese, Ricardo Gonçalo, Guido Montagna, Mikhail Zobov, F. Bedeschi, Eugene Bulyak, M. Aburaia, R. Tenchini, G. Marchiori, H. Rafique, G. Calderola, M. Antonello, Andrea Thamm, S. Glukhov, F. Hug, Robert Ruprecht, Veysi Erkcan Ozcan, K. Lee, Angelo Infantino, V. Makarenko, Z. Nergiz, Sergei Chekanov, Benjamin C. Allanach, C. Dachauer, H. Zhang, C. Biscari, A. J. Lankford, Scott Thomas, P. Kostka, Thomas Gehrmann, O. Azzolini, M. Ploskon, S. F. Ge, K. Oide, Andrea Bastianin, Daniela Bortoletto, Ingo Schienbein, J. L. Biarrotte, M. van Leeuwen, D. Stöckinger, Harald Ita, J. Katharina Behr, A. Cholakian, T. Kwon, L. Medina, Evgeny Starchenko, G. Mancinelli, L. Zanotto, F. Menez, L. Bellagamba, J. P. Burnet, Mogens H. Jensen, J. P. Tock, V. Raginel, J. Cervantes, L. V. Kalinovskaya, S. Vallecorsa, Peter Williams, I. Leon-Monzon, Christophe Grojean, Marco Andreini, J. Perez Morales, A. O. Acar, A.S. Lobko, Tian Yu, Joachim Mnich, V. Völkl, Ievgen Dubovyk, Tatsuya Masubuchi, P. Sphicas, F. Cerutti, P. Francavilla, A. Apollonio, Sylvie Braibant-Giacomelli, D. Denegri, Elie Aslanides, M. Zahnd, J. M. Bernhardt, Maxim Perfilov, G. Felici, E. Cantergiani, M. Daibo, F. Costanza, Christopher Rogan, M. Khatiri Yanehsari, R. Kriske, Vladimir G. Baryshevsky, Curtis R. Young, T. Baumgartner, Rafael de la Torre, Yuri Nosochkov, T. P. Watson, L. Pontecorvo, D. W. Kim, Patrick Janot, Benjamin Todd, Giulia Sylva, Maciej Chorowski, Stephane Monteil, J. Proudfoot, Dmitry Shatilov, Tord Ekelof, L. Bottura, M. Ortino, Paolo Chiggiato, L. Scibile, Stefano Giagu, G. Ferrara, M. Testa, A. M. Krainer, P. A. Keinz, E. Leogrande, Johann Collot, J. Barranco García, Vera Chetvertkova, G. Panizzo, Antonio Racioppi, E. Gianfelice-Wendt, Rashidul Islam, U. Cardella, Y. Bai, A. Novokhatski, P. Zeiler, A. Coccaro, Toshi Sumida, Andrzej Siemko, R. Franceschini, C. M. Carloni Calame, Elisa Fontanesi, G. Kozlov, J. Tkaczuk, Rama Calaga, F. Beaudette, Paolo Camarri, A. Pampaloni, E. Cruz Alaniz, M. Durante, Kari J. Eskola, S. A. Ellis, T. Lesiak, W. Chou, German F. R. Sborlini, Carlo Oleari, T. Fowler, A. Di Ciaccio, A. Bibet Chevalier, Stefano Forte, C. Berriaud, I. Tapan, Ezio Todesco, S. Lee, Jaime Hernández-Sánchez, D. M. Vogt, Oreste Nicrosini, Vittorio Marinozzi, Roberto Ferrari, M. I. Besana, Anna Sfyrla, Stanley J. Brodsky, G. de Rijk, Stefano Redaelli, Giorgio Apollinari, A. Zaborowska, Alessandro Cardini, J. F. Kamenik, V. Smaluk, Uta Klein, M. Bomben, P. Manfrinetti, M. Poli Lener, Jose Miguel No, Tiziano Camporesi, H. Gerwig, Francis Pérez, M. Koratzinos, V. Karaventzas, Jesse Thaler, T. Hoehn, M. Capeans, Sven Pfeiffer, P. Duda, H. Ten Kate, Petar Adzic, Kechen Wang, Sergey Belomestnykh, F. Kocak, H. Karadeniz, R. Alemany Fernandez, Johanna Stachel, A. Mostacci, John Jowett, A. Hegglin, H. Pais Da Silva, Marc Dünser, M. Roig, Sven Heinemeyer, V. Baglin, Stephane Fartoukh, C. Andris, Z. Ws, A. Nettsträter, Marco Bonvini, A. C. Canbay, Federico Carra, Silvia Salini, Kristjan Kannike, E. Cogneras, Frank Simon, Manfred Krammer, Johannes Bernardi, P. Valente, M. Moretti, L. Stoel, I. Low, Barbara Mele, E. Shaposhnikova, D. Fonnesu, Anton Andronic, Haluk Denizli, A. Fernández-Téllez, A. V. Nesterenko, M. Korjik, Philip Harris, Roberto Kersevan, Tommaso Portaluri, V. Parma, N.V. Mokhov, B. Humann, B. Tuchming, Stefan Antusch, L. Anderlini, J. Meignan, I. H. Sarpün, L. Tavian, Michelangelo L. Mangano, H. Martinez Bruzual, C. Sebastiani, Chao Zhang, M. A. Pleier, R. Ciftci, A. Crivellin, A. Blondel, O. Viazlo, Burak Bilki, A. Rosado Sanchez, Andrea Massironi, M. Greco, J. Martin Camalich, M. Reboud, Frederic Deliot, M. Béguin, Roberto Cardarelli, C. Milardi, G. Tassielli, Mario Campanelli, P. Fabbricatore, R. Rossmanith, Piergiulio Lenzi, D. P. Missiaen, R. Patterson, Sigve Haug, A. Farilla, Guilherme Milhano, D. El Khechen, Freya Blekman, O. B. Malyshev, Carlo Ferdeghini, A. Hannah, Michael Benedikt, E. Logothetis Agaliotis, M. Prausa, Maurizio Vignolo, M. Drewes, F. Marhauser, A. Ivanovs, M. Widorski, E. Santopinto, Javier Munilla, V. Mertens, Filip Moortgat, Salim Ogur, Michaela Schaumann, O. Rios Rubiras, Carsten Welsch, Fady Bishara, Michael Plagge, M. Czech, Giuseppe Iacobucci, I. Crespo Garrido, W. Dallapiazza, A. Moros, Wieslaw Placzek, A. E. Rentería-Olivo, M. Saito, H. U. Wienands, O. Verwilligen, L. Spallino, W. Snoeys, L. Duarte, A. Massimiliano, Greg Landsberg, Z. Liu, A. Ozansoy, Antonella Sciuto, T. Boccali, R. B. Appleby, M. Antonelli, J. A. Netto, Y. Nie, Johannes Gutleber, M. Skrzypek, N. Vignaroli, P. J. Clark, Emilio Bellingeri, Bennie F.L. Ward, P. Roloff, E. Perez Codina, Roman Martin, Elias Metral, B. Hegner, L. Zawiejski, Efe Yazgan, F. Couderc, G. Tonelli, G. Castorina, Patrizia Azzi, A. De Roeck, Jean-Philippe Lansberg, Riccardo Valente, A. David, F. Robert, Jeremi Niedziela, Anna Grassellino, Marie-Hélène Genest, V. Tisserand, A. Kilpinen, Y. K. Kim, A. Dominjon, Andrej Arbuzov, David Amorim, L. Kretzschmar, E. Bruna, Sergey Polozov, Vyacheslav Klyukhin, Hubert Kroha, O. Amstutz, A. Vitrano, Raymond Veness, Tilman Plehn, M. A. Mahmoud, Uşak Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümü, FCC Collaboration (Ukupan broj autora: 1363), FCC Collaboration, Abada, A., Abbrescia, M., Abdussalam, S. S., Abdyukhanov, I., Abelleira Fernandez, J., Abramov, A., Aburaia, M., Acar, A. O., Adzic, P. R., Agrawal, P., Aguilar-Saavedra, J. A., Aguilera-Verdugo, J. J., Aiba, M., Aichinger, I., Aielli, G., Akay, A., Akhundov, A., Aksakal, H., Albacete, J. L., Albergo, S., Alekou, A., Aleksa, M., Aleksan, R., Alemany Fernandez, R. 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C., Hati, C., Haug, S., Hauptman, J., Haurylavets, V., He, H. -J., Hegglin, A., Hegner, B., Heinemann, K., Heinemeyer, S., Helsens, C., Henriques, A., Hernandez, P., Hernandez-Pinto, R. J., Hernandez-Sanchez, J., Herzig, T., Hiekkanen, I., Hillert, W., Hoehn, T., Hofer, M., Hofle, W., Holdener, F., Holleis, S., Holzer, B., Hong, D. K., Honorato, C. G., Hopkins, S. C., Hrdinka, J., Hug, F., Humann, B., Humer, H., Hurth, T., Hutton, A., Iacobucci, G., Ibarrola, N., Iconomidou-Fayard, L., Ilyina-Brunner, K., Incandela, J., Infantino, A., Ippolito, V., Ishino, M., Islam, R., Ita, H., Ivanovs, A., Iwamoto, S., Iyer, A., Izquierdo Bermudez, S., Jadach, S., Jamin, D. O., Janot, P., Jarry, P., Jeff, A., Jenny, P., Jensen, E., Jensen, M., Jiang, X., Jimenez, J. M., Jones, M. A., Jones, O. R., Jowett, J. M., Jung, S., Kaabi, W., Kado, M., Kahle, K., Kalinovskaya, L., Kalinowski, J., Kamenik, J. F., Kannike, K., Kara, S. 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C., Perez, G., Perez, F., Perez Codina, E., Perez Morales, J., Perfilov, M., Pernegger, H., Peruzzi, M., Pes, C., Peters, K., Petracca, S., Petriello, F., Pezzotti, L., Pfeiffer, S., Piccinini, F., Pieloni, T., Pierini, M., Pikhartova, H., Pikurs, G., Pilicer, E., Piminov, P., Pira, C., Pittau, R., Placzek, W., Plagge, M., Plehn, T., Pleier, M. -A., Ploskon, M., Podeur, M., Podlech, H., Podzorny, T., Poggioli, L., Poiron, A., Polesello, G., Poli Lener, M., Polini, A., Polinski, J., Polozov, S. M., Ponce, L., Pont, M., Pontecorvo, L., Portaluri, T., Potamianos, K., Prasse, C., Prausa, M., Preinerstorfer, A., Premat, E., Price, T., Primavera, M., Prino, F., Prioli, M., Proudfoot, J., Provino, A., Pugnat, T., Pukhaeva, N., Pulawski, S., Pulikowski, D., Punzi, G., Putti, M., Pyarelal, A., Quack, H., Quispe, M., Racioppi, A., Rafique, H., Raginel, V., Raidal, M., Ramirez-Uribe, N. S., Ramsey-Musolf, M. 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Zurita, J, Işık Üniversitesi, Mühendislik Fakültesi, İnşaat Mühendisliği Bölümü, Işık University, Faculty of Engineering, Department of Civil Engineering, Bayındır, Cihan, Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions, Universitat Politècnica de Catalunya. RF&MW - Grup de Recerca de sistemes, dispositius i materials de RF i microones, Abada A., Abbrescia M., AbdusSalam S.S., Abdyukhanov I., Abelleira Fernandez J., Abramov A., Aburaia M., Acar A.O., Adzic P.R., Agrawal P., Aguilar-Saavedra J.A., Aguilera-Verdugo J.J., Aiba M., Aichinger I., Aielli G., Akay A., Akhundov A., Aksakal H., Albacete J.L., Albergo S., Alekou A., Aleksa M., Aleksan R., Alemany Fernandez R.M., Alexahin Y., Alia R.G., Alioli S., Alipour Tehrani N., Allanach B.C., Allport P.P., Altinli M., Altmannshofer W., Ambrosio G., Amorim D., Amstutz O., Anderlini L., Andreazza A., Andreini M., Andriatis A., Andris C., Andronic A., Angelucci M., Antinori F., Antipov S.A., Antonelli M., Antonello M., Antonioli P., Antusch S., Anulli F., Apolinario L., Apollinari G., Apollonio A., Appelo D., Appleby R.B., Apyan A., Arbey A., Arbuzov A., Arduini G., Ari V., Arias S., Armesto N., Arnaldi R., Arsenyev S.A., Arzeo M., Asai S., Aslanides E., Assmann R.W., Astapovych D., Atanasov M., Atieh S., Attie D., Auchmann B., Audurier A., Aull S., Aumon S., Aune S., Avino F., Avrillaud G., Aydin G., Azatov A., Azuelos G., Azzi P., Azzolini O., Azzurri P., Bacchetta N., Bacchiocchi E., Bachacou H., Baek Y.W., Baglin V., Bai Y., Baird S., Baker M.J., Baldwin M.J., Ball A.H., Ballarino A., Banerjee S., Barber D.P., Barducci D., Barjhoux P., Barna D., Barnafoldi G.G., Barnes M.J., Barr A., Barranco Garcia J., Barreiro Guimaraes da Costa J., Bartmann W., Baryshevsky V., Barzi E., Bass S.A., Bastianin A., Baudouy B., Bauer F., Bauer M., Baumgartner T., Bautista-Guzman I., Bayindir C., Beaudette F., Bedeschi F., Beguin M., Bellafont I., Bellagamba L., Bellegarde N., Belli E., Bellingeri E., Bellini F., Bellomo G., Belomestnykh S., Bencivenni G., Benedikt M., Bernardi G., Bernardi J., Bernet C., Bernhardt J.M., Bernini C., Berriaud C., Bertarelli A., Bertolucci S., Besana M.I., Besancon M., Beznosov O., Bhat P., Bhat C., Biagini M.E., Biarrotte J.-L., Bibet Chevalier A., Bielert E.R., Biglietti M., Bilei G.M., Bilki B., Biscari C., Bishara F., Blanco-Garcia O.R., Blanquez F.R., Blekman F., Blondel A., Blumlein J., Boccali T., Boels R., Bogacz S.A., Bogomyagkov A., Boine-Frankenheim O., Boland M.J., Bologna S., Bolukbasi O., Bomben M., Bondarenko S., Bonvini M., Boos E., Bordini B., Bordry F., Borghello G., Borgonovi L., Borowka S., Bortoletto D., Boscherini D., Boscolo M., Boselli S., Bosley R.R., Bossu F., Botta C., Bottura L., Boughezal R., Boutin D., Bovone G., Bozovic Jelisavic I., Bozbey A., Bozzi C., Bozzini D., Braccini V., Braibant-Giacomelli S., Bramante J., Braun-Munzinger P., Briffa J.A., Britzger D., Brodsky S.J., Brooke J.J., Bruce R., Bruckman De Renstrom P., Bruna E., Bruning O., Brunner O., Brunner K., Bruzzone P., Buffat X., Bulyak E., Burkart F., Burkhardt H., Burnet J.-P., Butin F., Buttazzo D., Butterworth A., Caccia M., Cai Y., Caiffi B., Cairo V., Cakir O., Calaga R., Calatroni S., Calderini G., Calderola G., Caliskan A., Calvet D., Calviani M., Camalich J.M., Camarri P., Campanelli M., Camporesi T., Canbay A.C., Canepa A., Cantergiani E., Cantore-Cavalli D., Capeans M., Cardarelli R., Cardella U., Cardini A., Carloni Calame C.M., Carra F., Carra S., Carvalho A., Casalbuoni S., Casas J., Cascella M., Castelnovo P., Castorina G., Catalano G., Cavasinni V., Cazzato E., Cennini E., Cerri A., Cerutti F., Cervantes J., Chaikovska I., Chakrabortty J., Chala M., Chamizo-Llatas M., Chanal H., Chanal D., Chance S., Chance A., Charitos P., Charles J., Charles T.K., Chattopadhyay S., Chehab R., Chekanov S.V., Chen N., Chernoded A., Chetvertkova V., Chevalier L., Chiarelli G., Chiarello G., Chiesa M., Chiggiato P., Childers J.T., Chmielinska A., Cholakian A., Chomaz P., Chorowski M., Chou W., Chrzaszcz M., Chyhyrynets E., Cibinetto G., Ciftci A.K., Ciftci R., Cimino R., Ciuchini M., Clark P.J., Coadou Y., Cobal M., Coccaro A., Cogan J., Cogneras E., Collamati F., Colldelram C., Collier P., Collot J., Contino R., Conventi F., Cook C.T.A., Cooley L., Corcella G., Cornell A.S., Corral G.H., Correia-Rodrigues H., Costanza F., Costa Pinto P., Couderc F., Coupard J., Craig N., Crespo Garrido I., Crivellin A., Croteau J.F., Crouch M., Cruz Alaniz E., Cure B., Curti J., Curtin D., Czech M., Dachauer C., D'Agnolo R.T., Daibo M., Dainese A., Dalena B., Daljevec A., Dallapiazza W., D'Aloia Schwartzentruber L., Dam M., D'Ambrosio G., Das S.P., DasBakshi S., da Silva W., da Silveira G.G., D'Auria V., D'Auria S., David A., Davidek T., Deandrea A., de Blas J., Debono C.J., De Curtis S., De Filippis N., de Florian D., Deghaye S., de Jong S.J., Del Bo C., Del Duca V., Delikaris D., Deliot F., Dell'Acqua A., Delle Rose L., Delmastro M., De Lucia E., Demarteau M., Denegri D., Deniau L., Denisov D., Denizli H., Denner A., d'Enterria D., de Rijk G., De Roeck A., Derue F., Deschamps O., Descotes-Genon S., Dev P.S.B., de Vivie de Regie J.B., Dewanjee R.K., Di Ciaccio A., Di Cicco A., Dillon B.M., Di Micco B., Di Nezza P., Di Vita S., Doblhammer A., Dominjon A., D'Onofrio M., Dordei F., Drago A., Draper P., Drasal Z., Drewes M., Duarte L., Dubovyk I., Duda P., Dudarev A., Dudko L., Duellmann D., Dunser M., du Pree T., Durante M., Duran Yildiz H., Dutta S., Duval F., Duval J.M., Dydyshka Y., Dziewit B., Eisenhardt S., Eisterer M., Ekelof T., El Khechen D., Ellis S.A., Ellis J., Ellison J.A., Elsener K., Elsing M., Enari Y., Englert C., Eriksson H., Eskola K.J., Esposito L.S., Etisken O., Etzion E., Fabbricatore P., Falkowski A., Falou A., Faltova J., Fan J., Fano L., Farilla A., Farinelli R., Farinon S., Faroughy D.A., Fartoukh S.D., Faus-Golfe A., Fawcett W.J., Felici G., Felsberger L., Ferdeghini C., Fernandez Navarro A.M., Fernandez-Tellez A., Ferradas Troitino J., Ferrara G., Ferrari R., Ferreira L., Ferreira da Silva P., Ferrera G., Ferro F., Fiascaris M., Fiorendi S., Fiorio C., Fischer O., Fischer E., Flieger W., Florio M., Fonnesu D., Fontanesi E., Foppiani N., Foraz K., Forkel-Wirth D., Forte S., Fouaidy M., Fournier D., Fowler T., Fox J., Francavilla P., Franceschini R., Franchino S., Franco E., Freitas A., Fuks B., Furukawa K., Furuseth S.V., Gabrielli E., Gaddi A., Galanti M., Gallo E., Ganjour S., Gao J., Garcia Diaz V., Garcia Perez M., Garcia Tabares L., Garion C., Garzelli M.V., Garzia I., Gascon-Shotkin S.M., Gaudio G., Gay P., Ge S.-F., Gehrmann T., Genest M.H., Gerard R., Gerigk F., Gerwig H., Giacomelli P., Giagu S., Gianfelice-Wendt E., Gianotti F., Giffoni F., Gilardoni S.S., Gil Costa M., Giovannetti M., Giovannozzi M., Giubellino P., Giudice G.F., Giunta A., Gladilin L.K., Glukhov S., Gluza J., Gobbi G., Goddard B., Goertz F., Golling T., Goncalves V.P., Goncalo R., Gonzalez Gomez L.A., Gorgi Zadeh S., Gorine G., Gorini E., Gourlay S.A., Gouskos L., Grancagnolo F., Grassellino A., Grau A., Graverini E., Gray H.M., Greco M., Grenard J.-L., Grimm O., Grojean C., Gromov V.A., Grosse-Oetringhaus J.F., Grudiev A., Grzanka K., Gu J., Guadagnoli D., Guidi V., Guiducci S., Guillermo Canton G., Gunaydin Y.O., Gupta R., Gupta R.S., Gutierrez J., Gutleber J., Guyot C., Guzey V., Gwenlan C., Haberstroh C., Hacisahinoglu B., Haerer B., Hahn K., Hahn T., Hammad A., Han C., Hance M., Hannah A., Harris P.C., Hati C., Haug S., Hauptman J., Haurylavets V., He H.-J., Hegglin A., Hegner B., Heinemann K., Heinemeyer S., Helsens C., Henriques A., Hernandez P., Hernandez-Pinto R.J., Hernandez-Sanchez J., Herzig T., Hiekkanen I., Hillert W., Hoehn T., Hofer M., Hofle W., Holdener F., Holleis S., Holzer B., Hong D.K., Honorato C.G., Hopkins S.C., Hrdinka J., Hug F., Humann B., Humer H., Hurth T., Hutton A., Iacobucci G., Ibarrola N., Iconomidou-Fayard L., Ilyina-Brunner K., Incandela J., Infantino A., Ippolito V., Ishino M., Islam R., Ita H., Ivanovs A., Iwamoto S., Iyer A., Izquierdo Bermudez S., Jadach S., Jamin D.O., Janot P., Jarry P., Jeff A., Jenny P., Jensen E., Jensen M., Jiang X., Jimenez J.M., Jones M.A., Jones O.R., Jowett J.M., Jung S., Kaabi W., Kado M., Kahle K., Kalinovskaya L., Kalinowski J., Kamenik J.F., Kannike K., Kara S.O., Karadeniz H., Karaventzas V., Karpov I., Kartal S., Karyukhin A., Kashikhin V., Katharina Behr J., Kaya U., Keintzel J., Keinz P.A., Keppel K., Kersevan R., Kershaw K., Khanpour H., Khatibi S., Khatiri Yanehsari M., Khoze V.V., Kieseler J., Kilic A., Kilpinen A., Kim Y.-K., Kim D.W., Klein U., Klein M., Kling F., Klinkenberg N., Kloppel S., Klute M., Klyukhin V.I., Knecht M., Kniehl B., Kocak F., Koeberl C., Kolano A.M., Kollegger A., Kolodziej K., Kolomiets A.A., Komppula J., Koop I., Koppenburg P., Koratzinos M., Kordiaczynska M., Korjik M., Kortner O., Kostka P., Kotlarski W., Kotnig C., Kottig T., Kotwal A.V., Kovalenko A.D., Kowalski S., Kozaczuk J., Kozlov G.A., Kozub S.S., Krainer A.M., Kramer T., Kramer M., Krammer M., Krasnov A.A., Krauss F., Kravalis K., Kretzschmar L., Kriske R.M., Kritscher H., Krkotic P., Kroha H., Kucharczyk M., Kuday S., Kuendig A., Kuhlmann G., Kulesza A., Kumar M., Kusina A., Kuttimalai S., Kuze M., Kwon T., Lackner F., Lackner M., La Francesca E., Laine M., Lamanna G., La Mendola S., Lancon E., Landsberg G., Langacker P., Lange C., Langner A., Lankford A.J., Lansberg J.P., Lari T., Laycock P.J., Lebrun P., Lechner A., Lee K., Lee S., Lee R., Lefevre T., Le Guen P., Lehtinen T., Leith S.B., Lenzi P., Leogrande E., Leonidopoulos C., Leon-Monzon I., Lerner G., Leroy O., Lesiak T., Levai P., Leveratto A., Levichev E., Li G., Li S., Li R., Liberati D., Liepe M., Lissauer D.A., Liu Z., Lobko A., Locci E., Logothetis Agaliotis E., Lombardo M.P., Long A.J., Lorin C., Losito R., Louzguiti A., Low I., Lucchesi D., Lucchini M.T., Luciani A., Lueckhof M., Lunt A.J.G., Luzum M., Lyubimtsev D.A., Maggiora M., Magnin N., Mahmoud M.A., Mahmoudi F., Maitre J., Makarenko V., Malagoli A., Malcles J., Malgeri L., Mallon P.J., Maltoni F., Malvezzi S., Malyshev O.B., Mancinelli G., Mandrik P., Manfrinetti P., Mangano M., Manil P., Mannelli M., Marchiori G., Marhauser F., Mariani V., Marinozzi V., Mariotto S., Marquard P., Marquet C., Marriott-Dodington T., Martin R., Martin O., Martin Camalich J., Martinez T., Martinez Bruzual H., Martinez-Hernandez M.I., Martins D.E., Marzani S., Marzocca D., Marzola L., Masciocchi S., Masina I., Massimiliano A., Massironi A., Masubuchi T., Matveev V.A., Mazzoni M.A., McCullough M., McIntosh P.A., Meade P., Medina L., Meier A., Meignan J., Mele B., Mendes Saraiva J.G., Menez F., Mentink M., Meoni E., Meridiani P., Merk M., Mermod P., Mertens V., Mether L., Metral E., Migliorati M., Milanese A., Milardi C., Milhano G., Militsyn B.L., Millet F., Minashvili I., Minervini J.V., Miralles L.S., Mirarchi D., Mishima S., Missiaen D.P., Mitselmakher G., Mitshuhashi T., Mnich J., Mohammadi Najafabadi M., Mohapatra R.N., Mokhov N., Molson J.G., Monge R., Montag C., Montagna G., Monteil S., Montenero G., Montesinos E., Moortgat F., Morange N., Morello G., Moreno Llacer M., Moretti M., Moretti S., Morley A.K., Moros A., Morozov I., Morretta V., Morrone M., Mostacci A., Muanza S., Muchnoi N., Muhlegger M., Mulder M., Mulders M., Muller B., Muller F., Muller A.-S., Munilla J., Murray M.J., Muttoni Y., Myers S., Mylona M., Nachtman J., Nakamoto T., Nardecchia M., Nardini G., Nason P., Nergiz Z., Nesterenko A.V., Netto J.A., Nettstrater A., Neubuser C., Neundorf J., Niccoli F., Nicrosini O., Nie Y., Niedermayer U., Niedziela J., Niemi A., Nikitin S.A., Nisati A., No J.M., Nonis M., Nosochkov Y., Novak M., Novokhatski A., O'Callaghan J.M., Ochando C., Ogur S., Ohmi K., Oide K., Okorokov V.A., Okumura Y., Oleari C., Olness F.I., Onel Y., Ortino M., Osborne J., Osland P., Otto T., Oyulmaz K.Y., Ozansoy A., Ozcan V., Ozdemir K., Pagliarone C.E., Pais da Silva H.F., Palmieri E., Palumbo L., Pampaloni A., Pan R.-Q., Panareo M., Panella O., Panico G., Panizzo G., Pankov A.A., Pantsyrny V., Papadopoulos C.G., Papaefstathiou A., Papaphilippou Y., Parker M.A., Parma V., Pasquali M., Patra S.K., Patterson R., Paukkunen H., Pauss F., Peggs S., Penttinen J.-P., Peon G., Perepelkin E.E., Perez E., Perez J.C., Perez G., Perez F., Perez Codina E., Perez Morales J., Perfilov M., Pernegger H., Peruzzi M., Pes C., Peters K., Petracca S., Petriello F., Pezzotti L., Pfeiffer S., Piccinini F., Pieloni T., Pierini M., Pikhartova H., Pikurs G., Pilicer E., Piminov P., Pira C., Pittau R., Placzek W., Plagge M., Plehn T., Pleier M.-A., Ploskon M., Podeur M., Podlech H., Podzorny T., Poggioli L., Poiron A., Polesello G., Poli Lener M., Polini A., Polinski J., Polozov S.M., Ponce L., Pont M., Pontecorvo L., Portaluri T., Potamianos K., Prasse C., Prausa M., Preinerstorfer A., Premat E., Price T., Primavera M., Prino F., Prioli M., Proudfoot J., Provino A., Pugnat T., Pukhaeva N., Pulawski S., Pulikowski D., Punzi G., Putti M., Pyarelal A., Quack H., Quispe M., Racioppi A., Rafique H., Raginel V., Raidal M., Ramirez-Uribe N.S., Ramsey-Musolf M.J., Rata R., Ratoff P., Ravotti F., Rebello Teles P., Reboud M., Redaelli S., Renner E., Renteria-Olivo A.E., Rescigno M., Reuter J., Ribon A., Ricci A.M., Riegler W., Riemann S., Riemann B., Riemann T., Rifflet J.M., Rimmer R.A., Rinaldesi R., Rinolfi L., Rios Rubiras O., Risselada T., Rivetti A., Rivkin L., Rizzo T., Robens T., Robert F., Robson A.J., Rochepault E., Roda C., Rodrigo G., Rodriguez-Cahuantzi M., Rogan C., Roig M., Rojas-Torres S., Rojo J., Rolandi G., Rolando G., Roloff P., Romanenko A., Romanov A., Roncarolo F., Rosado Sanchez A., Rosaz G., Rossi L., Rossi A., Rossmanith R., Rousset B., Royon C., Ruan X., Ruehl I., Ruhlmann-Kleider V., Ruiz R., Rumyantsev L., Ruprecht R., Ryazanov A.I., Saba A., Sadykov R., Saez de Jauregui D., Sahin M., Sailer B., Saito M., Sala F., Salam G.P., Salfeld-Nebgen J., Salgado C.A., Salini S., Sallese J.M., Salmi T., Salzburger A., Sampayo O.A., Sanfilippo S., Santiago J., Santopinto E., Santoro R., Sanz Ull A., Sarasola X., Sarpun I.H., Sauvain M., Savelyeva S., Sawada R., Sborlini G.F.R., Schaffer A., Schaumann M., Schenk M., Scheuerlein C., Schienbein I., Schlenga K., Schmickler H., Schmidt R., Schoerling D., Schoning A., Schorner-Sadenius T., Schott M., Schulte D., Schwaller P., Schwanenberger C., Schwemling P., Schwerg N., Scibile L., Sciuto A., Scomparin E., Sebastiani C., Seeber B., Segreti M., Selva P., Selvaggi M., Senatore C., Senol A., Serin L., Serluca M., Serra N., Seryi A., Sestini L., Sfyrla A., Shaposhnikov M., Shaposhnikova E., Sharkov B.Y., Shatilov D., Shelton J., Shiltsev V., Shipsey I.P., Shirkov G.D., Shivaji A., Shwartz D., Sian T., Sidorov S., Siemko A., Silvestrini L., Simand N., Simon F., Singh B.K., Siodmok A., Sirois Y., Sirtori E., Sirvinskaite R., Sitar B., Sjostrand T., Skands P., Skordis E., Skovpen K., Skrzypek M., Slade E., Slavich P., Slovak R., Smaluk V., Smirnov V., Snoeys W., Soffi L., Sollander P., Solovyanov O., Soltveit H.K., Song H., Sopicki P., Sorbi M., Spallino L., Spannowsky M., Spataro B., Sphicas P., Spiesberger H., Spiller P., Spira M., Srivastava T., Stachel J., Stakia A., Stanyard J.L., Starchenko E., Starikov A.Y., Stasto A.M., Statera M., Steerenberg R., Steggemann J., Stenvall A., Stivanello F., Stockinger D., Stoel L.S., Stoger-Pollach M., Strauss B., Stuart M., Stupakov G., Su S., Sublet A., Sugita K., Sulak L., Sullivan M.K., Sultansoy S., Sumida T., Suzuki K., Sylva G., Syphers M.J., Sznajder A., Taborelli M., Tahir N.A., Takeuchi M., Tal Hod E., Tambasco C., Tanaka J., Tang K., Tapan I., Taroni S., Tartarelli G.F., Tassielli G., Tavian L., Taylor T.M., Taylor G.N., Teixeira A.M., Tejeda-Munoz G., Telnov V.I., Tenchini R., ten Kate H.H.J., Terashi K., Tesi A., Testa M., Tetrel C., Teytelman D., Thaler J., Thamm A., Thomas S., Tiirakari M.T., Tikhomirov V., Tikhonov D., Timko H., Tisserand V., Tkachenko L.M., Tkaczuk J., Tock J.P., Todd B., Todesco E., Tomas Garcia R., Tommasini D., Tonelli G., Toral F., Torims T., Torre R., Townsend Z., Trant R., Treille D., Trentadue L., Tricoli A., Tricomi A., Trischuk W., Tropin I.S., Tuchming B., Tudora A.A., Turbiarz B., Turk Cakir I., Turri M., Tydecks T., Usovitsch J., Uythoven J., Vaglio R., Valassi A., Valchkova F., Valdivia Garcia M.A., Valente P., Valente R.U., Valente-Feliciano A.-M., Valentino G., Vale Silva L., Valet J.M., Valizadeh R., Valle J.W.F., Vallecorsa S., Vallone G., van Leeuwen M., van Rienen U.H., van Riesen-Haupt L., Varasteh M., Vecchi L., Vedrine P., Velev G., Veness R., Ventura A., Venturini Delsolaro W., Verducci M., Verhaaren C.B., Vernieri C., Verweij A.P., Verwilligen O., Viazlo O., Vicini A., Viehhauser G., Vignaroli N., Vignolo M., Vitrano A., Vivarelli I., Vlachos S., Vogel M., Vogt D.M., Volkl V., Volkov P., Volpini G., von Ahnen J., Vorotnikov G., Voutsinas G.G., Vysotsky V., Wagner U., Wallny R., Wang L.-T., Wang R., Wang K., Ward B.F.L., Watson T.P., Watson N.K., Ws Z., Weiland C., Weinzierl S., Welsch C.P., Wenninger J., Widorski M., Wiedemann U.A., Wienands H.-U., Wilkinson G., Williams P.H., Winter A., Wohlfahrt A., Wojton T., Wollmann D., Womersley J., Woog D., Wu X., Wulzer A., Yanehsari M.K., Yang G., Yang H.J., Yao W.-M., Yazgan E., Yermolchik V., Yilmaz A., Yoo H.-D., Yost S.A., You T., Young C., Yu T.-T., Yu F., Zaborowska A., Zadeh S.G., Zahnd M., Zanetti M., Zanotto L., Zawiejski L., Zeiler P., Zerlauth M., Zernov S.M., Zevi Dell Porta G., Zhang Z., Zhang Y., Zhang C., Zhang H., Zhao Z., Zhong Y.-M., Zhou J., Zhou D., Zhuang P., Zick G., Zimmermann F., Zinn-Justin J., Zivkovic L., Zlobin A.V., Zobov M., Zupan J., Zurita J., BAİBÜ, Fen Edebiyat Fakültesi, Fizik Bölümü, Denizli, Haluk, TOBB ETU, Faculty of Engineering, Department of Electrical & Electronics Engineering, TOBB ETU, Faculty of Engineering, Department of Material Science & Nanotechnology Engineering, TOBB ETÜ, Mühendislik Fakültesi, Elektrik ve Elektronik Mühendisliği Bölümü, TOBB ETÜ, Mühendislik Fakültesi, Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü, Bozbey, Ali, Sultansoy, Saleh, Özdemir, Kadri, Giresun Üniversitesi, UCL - SST/IRMP - Institut de recherche en mathématique et physique, and Ege Üniversitesi
Subjects: Beam losses, IMPACT, Physics::Instrumentation and Detectors, Physics beyond the Standard Model, EVENT BUILDER, hadron collider, General Physics and Astronomy, Mathematics and natural science: 400::Physics: 430::Nuclear and elementary particle physics: 431 [VDP], 01 natural sciences, 7. Clean energy, law.invention, Subatomär fysik, chemistry.chemical_compound, Conceptual design, Colliding beam accelerators, law, HE-LHC, Subatomic Physics, General Materials Science, Hadron colliders, Física::Física de partícules::Hadrons [Àrees temàtiques de la UPC], Large Hadron Collider, Acceleradors de partícules, Physics, Settore FIS/01 - Fisica Sperimentale, Beams (radiation), Settore FIS/02 - Fisica Teorica, Modelli e Metodi Matematici, Upgrade, Impact, collimators, partikkelfysikk, Future Circular Collider, High-Energy, Systems engineering, HE-LHC: The High-Energy Large Hadron Collider, Col·lisionadors d'hadrons, Applied physics, Collimators, Socio-culturale, Fizik, Hadrons, Accelerator Physics and Instrumentation, HE-LHC physics, Condensed Matter::Materials Science, 0103 physical sciences, Physics::Atomic and Molecular Clusters, beam losses, ddc:530, High Energy Physics, partikkelakselerator, Physical and Theoretical Chemistry, Niobium-tin, 010306 general physics, Collider, Particle Physics, Beams (radiation) | Collimators | Beam losses, Energies::Energia nuclear [Àrees temàtiques de la UPC], Large Hadron Collider HE-LHC, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Colliders (Nuclear physics), Acceleratorfysik och instrumentering, Event builder, Accelerators and Storage Rings, Particle accelerators, chemistry, Experimental High Energy Physics, Physics::Accelerator Physics, High Energy Physics::Experiment, Future Colliders
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BaekV. BaglinY. BaiS. BairdM. J. BakerM. J. BaldwinA. H. BallA. BallarinoS. BanerjeeD. P. BarberD. BarducciP. BarjhouxD. BarnaG. G. BarnaföldiM. J. BarnesA. BarrJ. Barranco GarcíaJ. Barreiro Guimarães da CostaW. BartmannV. BaryshevskyE. BarziS. A. BassA. BastianinB. BaudouyF. BauerM. BauerT. BaumgartnerI. Bautista-GuzmánC. BayındırF. BeaudetteF. BedeschiM. BéguinI. BellafontL. BellagambaN. BellegardeE. BelliE. BellingeriF. BelliniG. BellomoS. BelomestnykhG. BencivenniM. BenediktG. BernardiJ. BernardiC. BernetJ. M. BernhardtC. BerniniC. BerriaudA. BertarelliS. BertolucciM. I. BesanaM. BesançonO. BeznosovP. BhatC. BhatM. E. BiaginiJ. -L. BiarrotteA. Bibet ChevalierE. R. BielertM. BigliettiG. M. BileiB. BilkiC. BiscariF. BisharaO. R. Blanco-GarcíaF. R. BlánquezF. BlekmanA. BlondelJ. BlümleinT. BoccaliR. BoelsS. A. BogaczA. BogomyagkovO. Boine-FrankenheimM. J. BolandS. BolognaO. BolukbasiM. BombenS. BondarenkoM. BonviniE. BoosB. BordiniF. BordryG. BorghelloL. BorgonoviS. BorowkaD. 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ChattopadhyayR. ChehabS. V. ChekanovN. ChenA. ChernodedV. ChetvertkovaL. ChevalierG. ChiarelliG. ChiarelloM. ChiesaP. ChiggiatoJ. T. ChildersA. ChmielińskaA. CholakianP. ChomazM. ChorowskiW. ChouM. ChrzaszczE. ChyhyrynetsG. CibinettoA. K. CiftciR. CiftciR. CiminoM. CiuchiniP. J. ClarkY. CoadouM. CobalA. CoccaroJ. CoganE. CognerasF. CollamatiC. ColldelramP. CollierJ. CollotR. ContinoF. ConventiC. T. A. CookL. CooleyG. CorcellaA. S. CornellG. H. CorralH. Correia-RodriguesF. CostanzaP. Costa PintoF. CoudercJ. CoupardN. CraigI. Crespo GarridoA. CrivellinJ. F. CroteauM. CrouchE. Cruz AlanizB. CuréJ. CurtiD. CurtinM. CzechC. DachauerR. T. D’AgnoloM. DaiboA. DaineseB. DalenaA. DaljevecW. DallapiazzaL. D’Aloia SchwartzentruberM. DamG. D’AmbrosioS. P. DasS. DasBakshiW. da SilvaG. G. da SilveiraV. D’AuriaS. D’AuriaA. DavidT. DavidekA. DeandreaJ. de BlasC. J. DebonoS. De CurtisN. De FilippisD. de FlorianS. DeghayeS. J. de JongC. Del BoV. Del DucaD. DelikarisF. DeliotA. Dell’AcquaL. Delle RoseM. DelmastroE. De LuciaM. DemarteauD. DenegriL. DeniauD. DenisovH. DenizliA. DennerD. d’EnterriaG. de RijkA. De RoeckF. DerueO. DeschampsS. Descotes-GenonP. S. B. DevJ. B. de Vivie de RégieR. K. DewanjeeA. Di CiaccioA. Di CiccoB. M. DillonB. Di MiccoP. Di NezzaS. Di VitaA. DoblhammerA. DominjonM. D’OnofrioF. DordeiA. DragoP. DraperZ. DrasalM. DrewesL. DuarteI. DubovykP. DudaA. DudarevL. DudkoD. DuellmannM. DünserT. du PreeM. DuranteH. Duran YildizS. DuttaF. DuvalJ. M. DuvalY. DydyshkaB. DziewitS. EisenhardtM. EistererT. EkelofD. El KhechenS. A. EllisJ. EllisJ. A. EllisonK. ElsenerM. ElsingY. EnariC. EnglertH. ErikssonK. J. EskolaL. S. EspositoO. EtiskenE. EtzionP. FabbricatoreA. FalkowskiA. FalouJ. FaltovaJ. FanL. FanòA. FarillaR. FarinelliS. FarinonD. A. FaroughyS. D. FartoukhA. Faus-GolfeW. J. FawcettG. FeliciL. FelsbergerC. FerdeghiniA. M. Fernandez NavarroA. Fernández-TéllezJ. Ferradas TroitinoG. FerraraR. FerrariL. FerreiraP. Ferreira da SilvaG. FerreraF. FerroM. FiascarisS. 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KashikhinJ. Katharina BehrU. KayaJ. KeintzelP. A. KeinzK. KeppelR. KersevanK. KershawH. KhanpourS. KhatibiM. Khatiri YanehsariV. V. KhozeJ. KieselerA. KilicA. KilpinenY. -K. KimD. W. KimU. KleinM. KleinF. KlingN. KlinkenbergS. KlöppelM. KluteV. I. KlyukhinM. KnechtB. KniehlF. KocakC. KoeberlA. M. KolanoA. KolleggerK. KołodziejA. A. KolomietsJ. KomppulaI. KoopP. KoppenburgM. KoratzinosM. KordiaczyńskaM. KorjikO. KortnerP. KostkaW. KotlarskiC. KotnigT. KöttigA. V. KotwalA. D. KovalenkoS. KowalskiJ. KozaczukG. A. KozlovS. S. KozubA. M. KrainerT. KramerM. KrämerM. KrammerA. A. KrasnovF. KraussK. KravalisL. KretzschmarR. M. KriskeH. KritscherP. KrkoticH. KrohaM. KucharczykS. KudayA. KuendigG. KuhlmannA. KuleszaM. KumarM. KumarA. KusinaS. KuttimalaiM. KuzeT. KwonF. LacknerM. LacknerE. La FrancescaM. LaineG. LamannaS. La MendolaE. LançonG. LandsbergP. LangackerC. LangeA. LangnerA. J. LankfordJ. P. LansbergT. LariP. J. LaycockP. LebrunA. LechnerK. LeeS. LeeR. LeeT. LefevreP. Le GuenT. LehtinenS. B. LeithP. LenziE. LeograndeC. LeonidopoulosI. Leon-MonzonG. LernerO. LeroyT. LesiakP. LévaiA. LeverattoE. LevichevG. LiS. LiR. LiD. LiberatiM. LiepeD. A. LissauerZ. LiuA. LobkoE. LocciE. Logothetis AgaliotisM. P. LombardoA. J. LongC. LorinR. LositoA. LouzguitiI. LowD. LucchesiM. T. LucchiniA. LucianiM. LueckhofA. J. G. LuntM. LuzumD. A. LyubimtsevM. MaggioraN. MagninM. A. MahmoudF. MahmoudiJ. MaitreV. MakarenkoA. MalagoliJ. MalclésL. MalgeriP. J. MallonF. MaltoniS. MalvezziO. B. MalyshevG. MancinelliP. MandrikP. ManfrinettiM. ManganoP. ManilM. MannelliG. MarchioriF. MarhauserV. MarianiV. MarinozziS. MariottoP. MarquardC. MarquetT. Marriott-DodingtonR. MartinO. MartinJ. Martin CamalichT. MartinezH. Martinez BruzualM. I. Martínez-HernándezD. E. MartinsS. MarzaniD. MarzoccaL. MarzolaS. MasciocchiI. MasinaA. MassimilianoA. MassironiT. MasubuchiV. A. MatveevM. A. MazzoniM. McCulloughP. A. McIntoshP. MeadeL. MedinaA. MeierJ. MeignanB. MeleJ. G. Mendes SaraivaF. MenezM. MentinkE. MeoniP. MeridianiM. MerkP. MermodV. MertensL. MetherE. MétralM. MiglioratiA. MilaneseC. MilardiG. MilhanoB. L. MilitsynF. MilletI. MinashviliJ. V. MinerviniL. S. MirallesD. MirarchiS. MishimaD. P. MissiaenG. MitselmakherT. MitshuhashiJ. MnichM. Mohammadi NajafabadiR. N. MohapatraN. MokhovJ. G. MolsonR. MongeC. MontagG. MontagnaS. MonteilG. MonteneroE. MontesinosF. MoortgatN. MorangeG. MorelloM. Moreno LlácerM. MorettiS. MorettiA. K. MorleyA. MorosI. MorozovV. MorrettaM. MorroneA. MostacciS. MuanzaN. MuchnoiM. MühleggerM. MulderM. MuldersB. MüllerF. MüllerA. -S. MüllerJ. MunillaM. J. MurrayY. MuttoniS. MyersM. MylonaJ. NachtmanT. NakamotoM. NardecchiaG. NardiniP. NasonZ. NergizA. V. NesterenkoJ. A. NettoA. NettsträterC. NeubüserJ. NeundorfF. NiccoliO. NicrosiniY. NieU. NiedermayerJ. NiedzielaA. NiemiS. A. NikitinA. NisatiJ. M. NoM. NonisY. NosochkovM. NovákA. NovokhatskiJ. M. O’CallaghanC. OchandoS. OgurK. OhmiK. OideV. A. OkorokovY. OkumuraC. OleariF. I. OlnessY. OnelM. OrtinoJ. OsborneP. OslandT. OttoK. Y. OyulmazA. OzansoyV. ÖzcanK. ÖzdemirC. E. PagliaroneH. F. Pais da SilvaE. PalmieriL. PalumboA. PampaloniR. -Q. PanM. PanareoO. PanellaG. PanicoG. PanizzoA. A. PankovV. PantsyrnyC. G. PapadopoulosA. PapaefstathiouY. PapaphilippouM. A. ParkerV. ParmaM. PasqualiS. K. PatraR. PattersonH. PaukkunenF. PaussS. PeggsJ. -P. PenttinenG. PeónE. E. PerepelkinE. PerezJ. C. PerezG. PerezF. PérezE. Perez CodinaJ. Perez MoralesM. PerfilovH. PerneggerM. PeruzziC. PesK. PetersS. PetraccaF. PetrielloL. PezzottiS. PfeifferF. PiccininiT. PieloniM. PieriniH. PikhartovaG. PikursE. PilicerP. PiminovC. PiraR. PittauW. PłaczekM. PlaggeT. PlehnM. -A. PleierM. PłoskońM. PodeurH. PodlechT. PodzornyL. PoggioliA. PoironG. PoleselloM. Poli LenerA. PoliniJ. PolinskiS. M. PolozovL. PonceM. PontL. PontecorvoT. PortaluriK. PotamianosC. PrasseM. PrausaA. PreinerstorferE. PrematT. PriceM. PrimaveraF. PrinoM. PrioliJ. ProudfootA. ProvinoT. PugnatN. PukhaevaS. PuławskiD. PulikowskiG. PunziM. PuttiA. PyarelalH. QuackM. QuispeA. RacioppiH. RafiqueV. RaginelM. RaidalN. S. Ramírez-UribeM. J. Ramsey-MusolfR. RataP. RatoffF. RavottiP. Rebello TelesM. ReboudS. RedaelliE. RennerA. E. Rentería-OlivoM. RescignoJ. ReuterA. RibonA. M. RicciW. RieglerS. RiemannB. RiemannT. RiemannJ. M. RiffletR. A. RimmerR. RinaldesiL. RinolfiO. Rios RubirasT. RisseladaA. RivettiL. RivkinT. RizzoT. RobensF. RobertA. J. RobsonE. RochepaultC. RodaG. RodrigoM. Rodríguez-CahuantziC. RoganM. RoigS. Rojas-TorresJ. RojoG. RolandiG. RolandoP. RoloffA. RomanenkoA. RomanovF. RoncaroloA. Rosado SanchezG. RosazL. RossiA. RossiR. RossmanithB. RoussetC. RoyonX. RuanI. RuehlV. Ruhlmann-KleiderR. RuizL. RumyantsevR. RuprechtA. I. RyazanovA. SabaR. SadykovD. Saez de JaureguiM. SahinB. SailerM. SaitoF. SalaG. P. SalamJ. Salfeld-NebgenC. A. SalgadoS. SaliniJ. M. SalleseT. SalmiA. SalzburgerO. A. SampayoS. SanfilippoJ. SantiagoE. SantopintoR. SantoroA. Sanz UllX. SarasolaI. H. SarpünM. SauvainS. SavelyevaR. SawadaG. F. R. SborliniA. SchafferM. SchaumannM. SchenkC. ScheuerleinI. SchienbeinK. SchlengaH. SchmicklerR. SchmidtD. SchoerlingA. SchoningT. Schörner-SadeniusM. SchottD. SchulteP. SchwallerC. SchwanenbergerP. SchwemlingN. SchwergL. ScibileA. SciutoE. ScomparinC. SebastianiB. SeeberM. SegretiP. SelvaM. SelvaggiC. SenatoreA. SenolL. SerinM. SerlucaN. SerraA. SeryiL. SestiniA. SfyrlaM. ShaposhnikovE. ShaposhnikovaB. Y. SharkovD. ShatilovJ. SheltonV. ShiltsevI. P. ShipseyG. D. ShirkovA. ShivajiD. ShwartzT. SianS. SidorovA. SiemkoL. SilvestriniN. SimandF. SimonB. K. SinghA. SiódmokY. SiroisE. SirtoriR. SirvinskaiteB. SitarT. SjöstrandP. SkandsE. SkordisK. SkovpenM. SkrzypekE. SladeP. SlavichR. SlovakV. SmalukV. SmirnovW. SnoeysL. SoffiP. SollanderO. SolovyanovH. K. SoltveitH. SongP. SopickiM. SorbiL. SpallinoM. SpannowskyB. SpataroP. SphicasH. SpiesbergerP. SpillerM. SpiraT. SrivastavaJ. StachelA. StakiaJ. L. StanyardE. StarchenkoA. Y. StarikovA. M. StaśtoM. StateraR. SteerenbergJ. SteggemannA. StenvallF. StivanelloD. StöckingerL. S. StoelM. Stöger-PollachB. StraussM. StuartG. StupakovS. SuA. SubletK. SugitaL. SulakM. K. SullivanS. SultansoyT. SumidaK. SuzukiG. SylvaM. J. SyphersA. SznajderM. TaborelliN. A. TahirM. TakeuchiE. Tal HodC. TambascoJ. TanakaK. TangI. TapanS. TaroniG. F. TartarelliG. TassielliL. TavianT. M. TaylorG. N. TaylorA. M. TeixeiraG. Tejeda-MuñozV. I. TelnovR. TenchiniH. H. J. ten KateK. TerashiA. TesiM. TestaC. TetrelD. TeytelmanJ. ThalerA. ThammS. ThomasM. T. TiirakariV. TikhomirovD. TikhonovH. TimkoV. TisserandL. M. TkachenkoJ. TkaczukJ. P. TockB. ToddE. TodescoR. Tomás GarciaD. TommasiniG. TonelliF. ToralT. TorimsR. TorreZ. TownsendR. TrantD. TreilleL. TrentadueA. TricoliA. TricomiW. TrischukI. S. TropinB. TuchmingA. A. TudoraB. TurbiarzI. Turk CakirM. TurriT. TydecksJ. UsovitschJ. UythovenR. VaglioA. ValassiF. ValchkovaM. A. Valdivia GarciaP. ValenteR. U. ValenteA. -M. Valente-FelicianoG. ValentinoL. Vale SilvaJ. M. ValetR. ValizadehJ. W. F. ValleS. VallecorsaG. ValloneM. van LeeuwenU. H. van RienenL. van Riesen-HauptM. VarastehL. VecchiP. VedrineG. VelevR. VenessA. VenturaW. Venturini DelsolaroM. VerducciC. B. VerhaarenC. VernieriA. P. VerweijO. VerwilligenO. ViazloA. ViciniG. ViehhauserN. VignaroliM. VignoloA. VitranoI. VivarelliS. VlachosM. VogelD. M. VogtV. VölklP. VolkovG. VolpiniJ. von AhnenG. VorotnikovG. G. VoutsinasV. VysotskyU. WagnerR. WallnyL. -T. WangR. WangK. WangB. F. L. WardT. P. WatsonN. K. WatsonZ. WsC. WeilandS. WeinzierlC. P. WelschJ. WenningerM. WidorskiU. A. WiedemannH. -U. WienandsG. WilkinsonP. H. WilliamsA. WinterA. WohlfahrtT. WojtońD. WollmannJ. WomersleyD. WoogX. WuA. WulzerM. K. YanehsariG. YangH. J. YangW. -M. YaoE. YazganV. YermolchikA. YilmazA. YilmazH. -D. YooS. A. YostT. YouC. YoungT. -T. YuF. YuA. ZaborowskaS. G. ZadehM. ZahndM. ZanettiL. ZanottoL. ZawiejskiP. ZeilerM. ZerlauthS. M. ZernovG. Zevi Dell PortaZ. ZhangY. ZhangC. ZhangH. ZhangZ. ZhaoY. -M. ZhongJ. ZhouD. ZhouP. ZhuangG. ZickF. ZimmermannEmail authorJ. Zinn-JustinL. ZivkovicA. V. ZlobinM. ZobovJ. ZupanJ. Zuritathe FCC Collaboration, In response to the 2013 Update of the European Strategy for Particle Physics (EPPSU), the Future Circular Collider (FCC) study was launched as a world-wide international collaboration hosted by CERN. The FCC study covered an energy-frontier hadron collider (FCC-hh), a highest-luminosity high-energy lepton collider (FCC-ee), the corresponding 100km tunnel infrastructure, as well as the physics opportunities of these two colliders, and a high-energy LHC, based on FCC-hh technology. This document constitutes the fourth volume of the FCC Conceptual Design Report, devoted to the High-Energy Large Hadron Collider HE-LHC. It summarizes the HE-LHC physics discovery opportunities, presents the HE-LHC accelerator design, performance reach, and operation plan, discusses the underlying technologies, the civil engineering and technical infrastructure, and also sketches a possible implementation. Combining ingredients from the Large Hadron Collider (LHC), the high-luminosity LHC upgrade and adding novel technologies and approaches, the HE-LHC design aims at a hadron collider with about twice the centre-of-mass collision energy that the LHC can reach. Its performance aims at exploring physics beyond the Standard Model, signi cantly extending the LHC's direct and indirect sensitivity to new physics and discoveries.
Published: 2020
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24. Magnetic Monopole Dark Matter

Author: Christopher B. Verhaaren
Subjects: Physics, Dark matter, Magnetic monopole, Astrophysics
Published: 2020
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25. Collider signals of the Mirror Twin Higgs boson through the hypercharge portal

Author: Christopher B. Verhaaren, Can Kilic, Saereh Najjari, Zackaria Chacko, Physics, Theoretical Physics, and Elementary Particle Physics
Subjects: Physics, Hypercharge, Gauge boson, Particle physics, Photon, Large Hadron Collider, High Energy Physics::Phenomenology, FOS: Physical sciences, hep-ph, law.invention, Standard Model, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), law, Higgs boson, High Energy Physics::Experiment, Collider, Boson
Abstract: We consider the collider signals arising from kinetic mixing between the hypercharge gauge boson of the Standard Model and its twin counterpart in the Mirror Twin Higgs model, in the framework in which the twin photon is massive. Through the mixing, the Standard Model fermions acquire charges under the mirror photon and the mirror Z boson. We determine the current experimental bounds on this scenario, and show that the mixing can be large enough to discover both the twin photon and the twin Z at the LHC, or at a future 100 TeV hadron collider, with dilepton resonances being a particularly conspicuous signal. We show that, in simple models, measuring the masses of both the mirror photon and mirror Z, along with the corresponding event rates in the dilepton channel, overdetermines the system, and can be used to test these theories., 28 pages, 9 figures; Updated to published version
Published: 2019
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26. Discovering the twin Higgs boson with displaced decays

Author: Can Kilic, Christopher B. Verhaaren, S. Najjari, Physics, Theoretical Physics, and Elementary Particle Physics
Subjects: Quark, Physics, Particle physics, Large Hadron Collider, hep-ex, Glueball, High Energy Physics::Lattice, High Energy Physics::Phenomenology, FOS: Physical sciences, hep-ph, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), symbols.namesake, Fraternal twin, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), symbols, Higgs boson, High Energy Physics::Experiment, Higgs mechanism, Boson
Abstract: The Twin Higgs mechanism keeps the scalar sector of the Standard Model (SM) natural while remaining consistent with the non-observation of new colored particles at the Large Hadron Collider (LHC). In this construction the heavy twin Higgs boson provides a portal between the SM particles and the twin sector, but is quite challenging to discover at colliders. In the Fraternal Twin Higgs setup, where light twin quarks are absent, we study a novel discovery channel for the heavy twin Higgs boson by considering its decay to a pair of light Higgs bosons, one of which subsequently decays to glueball states in the twin sector, leading to displaced vertex signatures. We estimate the sensitivity of existing LHC searches in this channel, and assess the discovery potential of the high luminosity (HL) LHC. We show that the glueballs probed by these searches are outside the sensitivity of existing searches for exotic decays of the light Higgs boson. In addition, we demonstrate that the displaced signals we consider probe a region of heavy Higgs masses beyond the reach of prompt signals. We also comment on the possibility of probing the input parameters of the microscopic physics and providing a way to test the Twin Higgs mechanism with this channel., 27 pages, 9 figures, v2: references updated, minor changes
Published: 2019

27. Breaking Mirror Twin Hypercharge

Author: Christopher B. Verhaaren and Brian Batell
Subjects: Quark, Physics, Nuclear and High Energy Physics, Hypercharge, Particle physics, Higgs Physics, 010308 nuclear & particles physics, Scalar (mathematics), High Energy Physics::Phenomenology, FOS: Physical sciences, Effective Field Theories, Global symmetry, 01 natural sciences, Symmetry (physics), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Beyond Standard Model, 0103 physical sciences, Higgs boson, lcsh:QC770-798, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, Symmetry breaking, 010306 general physics, Scalar field
Abstract: The Twin Higgs scenario stabilizes the Higgs mass through an approximate global symmetry and has remained natural in the face of increasingly stringent LHC bounds on colored top partners. Two basic structural questions in this framework concern the nature of the twin hypercharge gauge symmetry and the origin of the $\mathbb{Z}_2$ symmetry breaking needed to achieve the correct vacuum alignment. Both questions are addressed in a simple extension of the Mirror Twin Higgs model with an exact $\mathbb{Z}_2$ symmetry and a scalar field that spontaneously breaks both twin hypercharge and $\mathbb{Z}_2$. Due to the $\mathbb{Z}_2$ symmetry and an approximate $U(2)$ symmetry in the potential, a new hypercharge scalar appears in the visible sector and, like the Higgs, is a pseudo-Nambu-Goldstone boson with a weak-scale mass. Couplings between the hypercharge scalar and matter provide a new dynamical source of twin sector fermion masses. Depending on the nature and size of these couplings, a variety of experimental signatures may arise, including quark and lepton flavor violation, neutrino masses and mixings as well as direct collider probes of the hypercharged scalar. These signals are correlated with the twin matter spectrum, which can differ dramatically from the visible one, including dynamical realizations of fraternal-like scenarios., 34 pages, 3 figures; Updated to published version
Published: 2019

28. Composite Twin Dark Matter

Author: Kyle Zora, Christopher B. Verhaaren, and John Terning
Subjects: Physics, Quark, Hypercharge, Particle physics, 010308 nuclear & particles physics, Mathematics::General Mathematics, Dark matter, High Energy Physics::Phenomenology, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Computer Science::Digital Libraries, 01 natural sciences, Bottom quark, Baryon, Fraternal twin, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Condensed Matter::Superconductivity, 0103 physical sciences, Bound state, 010306 general physics, Lepton
Abstract: We consider Fraternal Twin Higgs models where the twin bottom quark, $b'$, is much heavier than the twin confinement scale. In this limit aspects of quark bound states, like the mass and binding energy, can be accurately calculated. We show that in this regime, dark matter can be primarily made of twin baryons containing $b' b' b'$ or, when twin hypercharge is gauged, twin atoms, composed of a baryon bound to a twin $\tau'$ lepton. We find that there are significant regions of parameter space which are allowed by current constraints but within the realm of detection in the near future. The case with twin atoms can alleviate the tension between dark matter properties inferred from dwarf galaxies and clusters., Comment: 21 pages, 5 figures; expanded discussion of bounds
Published: 2019

29. Dark monopoles and SL(2, ℤ) duality

Author: Christopher B. Verhaaren and John Terning
Subjects: High Energy Physics - Theory, Physics, Nuclear and High Energy Physics, Photon, 010308 nuclear & particles physics, Magnetic monopole, FOS: Physical sciences, Duality (optimization), Charge (physics), Solitons Monopoles and Instantons, 01 natural sciences, Spontaneous Symmetry Breaking, High Energy Physics - Phenomenology, Quantization (physics), Theoretical physics, High Energy Physics - Phenomenology (hep-ph), High Energy Physics - Theory (hep-th), 0103 physical sciences, Effective field theory, lcsh:QC770-798, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, Gauge theory, 010306 general physics, Diagonal subgroup, Duality in Gauge Field Theories
Abstract: We explore kinetic mixing between two Abelian gauge theories that have both electric and magnetic charges. When one of the photons becomes massive, novel effects arise in the low-energy effective theory, including the failure of Dirac charge quantization as particles from one sector obtain parametrically small couplings to the photon of the other. We maintain a manifest SL(2,Z) duality throughout our analysis, which is the diagonal subgroup of the dualities of the two un-mixed gauge theories., Comment: 15 pages; Updated to match published version
Published: 2018
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30. Singlet Scalar Top Partners from Accidental Supersymmetry

Author: Ennio Salvioni, Hsin-Chia Cheng, Lingfeng Li, and Christopher B. Verhaaren
Subjects: Physics, Beyond Standard Model, Discrete Symmetries, Supersymmetric Standard Model, Nuclear and High Energy Physics, Particle physics, Top quark, 010308 nuclear & particles physics, Physics beyond the Standard Model, Scalar (mathematics), Electroweak interaction, High Energy Physics::Phenomenology, FOS: Physical sciences, Supersymmetry, 01 natural sciences, Hidden sector, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Higgs boson, lcsh:QC770-798, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, Symmetry breaking, 010306 general physics
Abstract: We present a model wherein the Higgs mass is protected from the quadratic one-loop top quark corrections by scalar particles that are complete singlets under the Standard Model (SM) gauge group. While bearing some similarity to Folded Supersymmetry, the construction is purely four dimensional and enjoys more parametric freedom, allowing electroweak symmetry breaking to occur easily. The cancelation of the top loop quadratic divergence is ensured by a $Z_3$ symmetry that relates the SM top sector and two hidden top sectors, each charged under its own hidden color group. In addition to the singlet scalars, the hidden sectors contain electroweak-charged supermultiplets below the TeV scale, which provide the main access to this model at colliders. The phenomenology presents both differences and similarities with respect to other realizations of neutral naturalness. Generally, the glueballs of hidden color have longer decay lengths. The production of hidden sector particles results in quirk or squirk bound states, which later annihilate. We survey the possible signatures and corresponding experimental constraints., Comment: 41 pages, 9 Figures; v2: updated to published version
Published: 2018
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31. Discovering uncolored naturalness in exotic Higgs decays

Author: Christopher B. Verhaaren and David Curtin
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, 010308 nuclear & particles physics, Glueball, High Energy Physics::Lattice, Physics beyond the Standard Model, High Energy Physics::Phenomenology, Electroweak interaction, FOS: Physical sciences, Supersymmetry, Little Higgs, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Higgs boson, High Energy Physics::Experiment, 010306 general physics, Mirror matter
Abstract: Solutions to the hierarchy problem usually require top partners. In standard SUSY or composite Higgs theories, the partners carry SM color and are becoming increasingly constrained by LHC searches. However, theories like Folded SUSY (FS), Twin Higgs (TH) and Quirky Little Higgs (QLH) introduce uncolored top partners, which can be SM singlets or carry electroweak charge. Their small production cross section left doubt as to whether the LHC can effectively probe such scenarios. Typically, these partners are charged under their own mirror color gauge group. In FS and QLH, the absence of light mirror matter allows glueballs to form at the bottom of the mirror spectrum. This is also the case in some TH realizations. The Higgs can decay to these mirror glueballs, with the glueballs decaying into SM particles with potentially observable lifetimes. We undertake the first detailed study of this glueball signature and quantitatively demonstrate the discovery potential of uncolored naturalness via exotic Higgs decays at the LHC and a potential future 100 TeV collider. Our findings indicate that mirror glueballs are the smoking gun signature of natural FS and QLH type theories, in analogy to tree-level Higgs coupling shifts for the TH. We show that glueball masses in the $\sim$ 10-60 GeV mass range are theoretically preferred. Careful treatment of lifetime, mirror-hadronization and nonperturbative uncertainties is required to perform meaningful collider studies. We outline several new search strategies for exotic Higgs decays of the form $h\to XX \to 4f$ at the LHC, with $X$ having lifetimes in the $10 \mu m$ to $km$ range. We find that FS stops can be probed with masses up to 600 (1100) GeV at the LHC with 300 (3000) /fb of data, and TH top partners could be accessible with masses up to 900 (1500) GeV. This makes exotic Higgs decays the prime discovery channel for uncolored naturalness at the LHC., Comment: 31 pages + references, 10 figures. Extended sensitivity projections to glueball masses below 12 GeV, added model-independent presentation of limits, improved modeling of displaced vertex triggering and reconstruction. Conclusions unchanged
Published: 2015
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32. Testing the Scalar Sector of the Twin Higgs Model at Colliders

Author: Can Kilic, Saereh Najjari, Zackaria Chacko, and Christopher B. Verhaaren
Subjects: Physics, Particle physics, Large Hadron Collider, 010308 nuclear & particles physics, Physics beyond the Standard Model, Scalar (mathematics), High Energy Physics::Phenomenology, FOS: Physical sciences, Scalar potential, Global symmetry, Parameter space, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), symbols.namesake, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Higgs boson, symbols, High Energy Physics::Experiment, 010306 general physics, Higgs mechanism
Abstract: We consider Mirror Twin Higgs models in which the breaking of the global symmetry is realized linearly. In this scenario, the radial mode in the Higgs potential is present in the spectrum, and constitutes a second portal between the twin and SM sectors. We show that a study of the properties of this particle at colliders, when combined with precision measurements of the light Higgs, can be used to overdetermine the form of the scalar potential, thereby confirming that it possesses an enhanced global symmetry as dictated by the Twin Higgs mechanism. We find that, although the reach of the LHC for this state is limited, future linear colliders will be able to explore a significant part of the preferred parameter space, allowing the possibility of directly testing the Twin Higgs framework., 20 pages plus references and appendix
Published: 2017

33. A quirky probe of neutral naturalness

Author: Zackaria Chacko, Christopher B. Verhaaren, and David Curtin
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Glueball, Physics beyond the Standard Model, High Energy Physics::Phenomenology, FOS: Physical sciences, Supersymmetry, Little Higgs, 16. Peace & justice, 01 natural sciences, Standard Model, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Pair production, 0103 physical sciences, Higgs boson, High Energy Physics::Experiment, Production (computer science), 010306 general physics
Abstract: We consider the signals arising from top partner pair production at the LHC as a probe of theories of Neutral Naturalness. We focus on scenarios in which top partners carry electroweak charges, such as Folded SUSY or the Quirky Little Higgs. In this class of theories the top partners are pair produced as quirky bound states, since they are charged under a mirror color group whose lightest states are hidden glueballs. The quirks promptly de-excite and annihilate into glueballs, which decay back to SM fermions via Higgs mixing. This can give rise to spectacular signatures at the LHC, such displaced decays, or high-multiplicity prompt production of many hard $\bar b b$ or $\tau^+ \tau^-$ pairs. We show that signals arising from top partner pair production constitute the primary discovery channel for this class of theories in most regions of parameter space, and might provide the only experimental probe of scenarios with sub-cm glueball decay lengths. The measurement of top partner masses and couplings, which could be used to test the neutral naturalness mechanism directly, is also a tantalizing possibility., Comment: 6 pages, 2 figures. v2 contains various clarifications compared to v1, no change in results
Published: 2016
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34. Quirky Explanations for the Diphoton Excess

Author: David Curtin and Christopher B. Verhaaren
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Physics beyond the Standard Model, High Energy Physics::Lattice, High Energy Physics::Phenomenology, Yukawa potential, FOS: Physical sciences, Fermion, 750 GeV diphoton excess, 01 natural sciences, Gluon, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Pair production, Gauge group, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Lepton
Abstract: We propose two simple quirk models to explain the recently reported 750 GeV diphoton excesses at ATLAS and CMS. It is already well-known that a real singlet scalar $\phi$ with Yukawa couplings $\phi \bar X X$ to vector-like fermions $X$ with mass $m_X > m_\phi/2$ can easily explain the observed signal, provided $X$ carries both SM color and electric charge. We instead consider first the possibility that the pair production of a fermion, charged under both SM gauge groups and a confining $SU(3)_v$ gauge group, is responsible. If pair produced it forms a quirky bound state, which promptly annihilates into gluons, photons, v-gluons and possibly SM fermions. This is an extremely minimal model to explain the excess, but is already in some tension with existing displaced searches, as well as dilepton and dijet resonance bounds. We therefore propose a hybrid Quirk-Scalar model, in which the fermion of the simple $\phi \bar X X$ toy model is charged under the additional $SU(3)_v$ confining gauge group. Constraints on the new heavy fermion $X$ are then significantly relaxed. The main additional signals of this model are possible dilepton, dijet and diphoton resonances at $\sim$ 2 TeV or more from quirk annihilation, and the production of v-glueballs through quirk annihilation and $\phi$ decay. The glueballs can give rise to spectacular signatures, including displaced vertices and events with leptons, photons and $Z$-bosons. If the Quirk-Scalar model is responsible for the 750 GeV excess it should be discovered in one of these channels with 20 or $300 \mathrm{fb}^{-1}$ of LHC run 2 data., Comment: 8 pages, 5 figures. Fixed minor typos. Conclusions unchanged. Published version
Published: 2015

35. Putting a stop to di-Higgs modifications

Author: Matthew McCullough, Christopher B. Verhaaren, Brian Batell, and Daniel Stolarski
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, 010308 nuclear & particles physics, Physics beyond the Standard Model, High Energy Physics::Phenomenology, FOS: Physical sciences, Observable, Hierarchy problem, Supersymmetry, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Pair production, 0103 physical sciences, Higgs boson, High Energy Physics::Experiment, 010306 general physics, Boson, Particle Physics - Phenomenology
Abstract: Pair production of Higgs bosons at hadron colliders is an enticing channel to search for new physics. New colored particles that couple strongly to the Higgs, such as those most often called upon to address the hierarchy problem, provide well motivated examples in which large enhancements of the di-Higgs rate are possible, at least in principle. However, in such scenarios the di-Higgs production rate is tightly correlated with the single Higgs production rate and, since the latter is observed to be SM-like, one generally expects that only modest enhancements in di-Higgs production are allowed by the LHC Run 1 data. We examine the contribution of top squarks (stops) in a simplified supersymmetry model to di-Higgs production and find that this general expectation is indeed borne out. In particular, the allowed deviations are typically small, but there are tuned regions of parameter space where expectations based on EFT arguments break down in which order 100% enhancements to the di-Higgs production rate are possible and are simultaneously consistent with the observed single Higgs production rates. These effects are potentially observable with the high luminosity run of the LHC or at a future hadron collider., 16 pages + refrences; v2 updated references; v3 Published version
Published: 2015

36. Interactions of a stabilized radion and duality

Author: Christopher B. Verhaaren, Zackaria Chacko, Daniel Stolarski, and Rashmish K. Mishra
Subjects: High Energy Physics - Theory, Physics, Nuclear and High Energy Physics, Graviscalar, Scalar (mathematics), FOS: Physical sciences, High Energy Physics - Phenomenology, High Energy Physics::Theory, General Relativity and Quantum Cosmology, AdS/CFT correspondence, Theoretical physics, High Energy Physics - Phenomenology (hep-ph), High Energy Physics - Theory (hep-th), Randall–Sundrum model, Quantum electrodynamics, Dilaton, Particle Physics - Phenomenology
Abstract: We determine the couplings of the graviscalar radion in Randall-Sundrum models to Standard Model fields propagating in the bulk of the space, taking into account effects arising from the dynamics of the Goldberger-Wise scalar that stabilizes the size of the extra dimension. The leading corrections to the radion couplings are shown to arise from direct contact interactions between the Goldberger-Wise scalar and the Standard Model fields. We obtain a detailed interpretation of the results in terms of the holographic dual of the radion, the dilaton. In doing so, we determine how the familiar identification of the parameters on the two sides of the AdS/CFT correspondence is modified in the presence of couplings of the bulk Standard Model fields to the Goldberger-Wise scalar. We find that corrections to the form of the dilaton couplings from effects associated with the stabilization of the extra dimension are suppressed by the square of the ratio of the dilaton mass to the Kaluza-Klein scale, in good agreement with results from the CFT side of the correspondence., 22 pages plus appendices and references
Published: 2015
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37. A couplet from flavored dark matter

Author: Prateek Agrawal, Christopher B. Verhaaren, Can Kilic, and Zackaria Chacko
Subjects: Physics, Particle physics, Nuclear and High Energy Physics, Photon, 010308 nuclear & particles physics, Dark matter, High Energy Physics::Phenomenology, Yukawa potential, FOS: Physical sciences, 01 natural sciences, Standard Model, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Mass spectrum, High Energy Physics::Experiment, Couplet, 010303 astronomy & astrophysics, Line (formation), Lepton
Abstract: We show that a couplet, a pair of closely spaced photon lines, in the X-ray spectrum is a distinctive feature of lepton flavored dark matter models for which the mass spectrum is dictated by Minimal Flavor Violation. In such a scenario, mass splittings between different dark matter flavors are determined by Standard Model Yukawa couplings and can naturally be small, allowing all three flavors to be long-lived and contribute to the observed abundance. Then, in the presence of a tiny source of flavor violation, heavier dark matter flavors can decay via a dipole transition on cosmological timescales, giving rise to three photon lines. The ratios of the line energies are completely determined in terms of the charged lepton masses, and constitute a firm prediction of this framework. For dark matter masses of order the weak scale, the couplet lies in the keV-MeV region, with a much weaker line in the eV-keV region. This scenario constitutes a potential explanation for the recent claim of the observation of a 3.5 keV line. The next generation of X-ray telescopes may have the necessary resolution to resolve the double line structure of such a couplet., Comment: 17 pages, 4 figures, 1 haiku
Published: 2015

38. Colorless top partners, a 125 GeV Higgs boson, and the limits on naturalness

Author: Roni Harnik, Gustavo Burdman, Leonardo de Lima, Christopher B. Verhaaren, Zackaria Chacko, Universidade de São Paulo (USP), Fermilab, and Universidade Estadual Paulista (UNESP)
Subjects: Physics, Nuclear and High Energy Physics, Top quark, Particle physics, Large Hadron Collider, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, FOS: Physical sciences, Top quark condensate, Supersymmetry, Little Higgs, 01 natural sciences, Standard Model, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Higgs boson, Little hierarchy problem, High Energy Physics::Experiment, 010306 general physics
Abstract: Theories of physics beyond the Standard Model that address the hierarchy problem generally involve top partners, new particles that cancel the quadratic divergences associated with the Yukawa coupling of the Higgs to the top quark. With extensions of the Standard Model that involve new colored particles coming under strain from collider searches, scenarios in which the top partners carry no charge under the strong interactions have become increasingly compelling. Although elusive for direct searches, these theories predict modified couplings of the Higgs boson to the Standard Model particles. This results in corrections to the Higgs production and decay rates that can be detected at the Large Hadron Collider (LHC) provided the top partners are sufficiently light, and the theory correspondingly natural. In this paper we consider three theories that address the little hierarchy problem and involve colorless top partners, specifically the Mirror Twin Higgs, Folded Supersymmetry, and the Quirky Little Higgs. For each model we investigate the current and future bounds on the top partners, and the corresponding limits on naturalness, that can be obtained from the Higgs program at the LHC. We conclude that the LHC will not be able to strongly disfavor naturalness, with mild tuning at the level of about one part in ten remaining allowed even with 3000 fb$^{-1}$ of data at 14 TeV., 28 pages plus appendices and references
Published: 2015

39. Leptophilic dark matter and the anomalous magnetic moment of the muon

Author: Prateek Agrawal, Zackaria Chacko, and Christopher B. Verhaaren
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, Anomalous magnetic dipole moment, Magnetic moment, 010308 nuclear & particles physics, Dark matter, FOS: Physical sciences, Parameter space, 01 natural sciences, Standard Model, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Anomaly (physics), 010306 general physics, Lepton
Abstract: We consider renormalizable theories such that the scattering of dark matter off leptons arises at tree level, but scattering off nuclei only arises at loop. In this framework, the various dark matter candidates can be classified by their spins and by the forms of their interactions with leptons. We determine the corrections to the anomalous magnetic moment of the muon that arise from these interactions. We then consider the implications of these results for a set of simplified models of leptophilic dark matter. When a dark matter candidate reduces the existing tension between the standard model prediction of the anomalous magnetic moment and the experimental measurement, the region of parameter space favored to completely remove the discrepancy is highlighted. Conversely, when agreement is worsened, we place limits on the parameters of the corresponding simplified model. These bounds and favored regions are compared against the experimental constraints on the simplified model from direct detection and from collider searches. Although these constraints are severe, we find there do exist limited regions of parameter space in these simple theories that can explain the observed anomaly in the muon magnetic moment while remaining consistent with all experimental bounds., 43 pages, 15 figures
Published: 2014
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