Tevatron
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High-precision measurement of the <i>W</i> boson mass with the CDF II detector Open
The mass of the W boson, a mediator of the weak force between elementary particles, is tightly constrained by the symmetries of the standard model of particle physics. The Higgs boson was the last missing component of the model. After obse…
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Parton distributions from LHC, HERA, Tevatron and fixed target data: MSHT20 PDFs Open
We present the new MSHT20 set of parton distribution functions (PDFs) of the proton, determined from global analyses of the available hard scattering data. The PDFs are made available at NNLO, NLO, and LO, and supersede the MMHT14 sets. Th…
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Constraining top quark effective theory in the LHC Run II era Open
We perform an up-to-date global fit of top quark effective theory to\nexperimental data from the Tevatron, and from LHC Runs I and II. Experimental\ndata includes total cross-sections up to 13 TeV, as well as differential\ndistributions, f…
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750 GeV Diphoton Excess from the Goldstino Superpartner Open
We interpret the diphoton excess recently reported by the ATLAS and CMS Collaborations as a new resonance arising from the sgoldstino scalar, which is the superpartner of the Goldstone mode of spontaneous supersymmetry breaking, the goldst…
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Non-resonant New Physics in Top Pair Production at Hadron Colliders Open
We use top quark pair production as a probe of top-philic non-resonant new physics. Following a low energy effective field theory approach, we calculate several key observables in top quark pair production at hadron colliders (e.g., total …
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Collider probes of the MSSM Higgs sector with explicit CP violation Open
We investigate the hadron collider phenomenology of the Minimal Supersymmetric Standard Model (MSSM) with explicit CP violation for Higgs bosons that can be observed in Standard Model search channels: W/ZHi( → b¯b) at the Tevatron, and gg …
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Measurement of the B-c(+) meson lifetime using the decay mode B-c(+)-> J/psi e(+)nu(e) Open
We present a measurement of the B-c(+) meson lifetime in the decay mode B-c(+) -> J/psi e(+) nu(e) using the Collider Detector at Fermilab II detector at the Fermilab Tevatron Collider. From a sample of about 360 pb(-1) of pp collisions at…
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Charged hadron fragmentation functions from collider data Open
We present NNFF1.1h, a new determination of unidentified charged-hadron fragmentation functions (FFs) and their uncertainties. Experimental measurements of transverse-momentum distributions for charged-hadron production in proton-(anti)pro…
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Tevatron Run II combination of the effective leptonic electroweak mixing angle Open
Drell-Yan lepton pairs produced in the process $p\bar{p} → ℓ^+ ℓ^−$ + X through an intermediate γ∗/Z boson have an asymmetry in their angular distribution related to the spontaneous symmetry breaking of the electroweak force and the associ…
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Global and optimal probes for the top-quark effective field theory at future lepton colliders Open
A bstract We study the sensitivity to physics beyond the standard model of precise top-quark pair production measurements at future lepton colliders. A global effective-field-theory approach is employed, including all ten dimension-six ope…
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Herwig 7.2 release note Open
A new release of the Monte Carlo event generator Herwig (version 7.2) is now available. This version introduces a number of improvements over the major version 7.0, notably: multi-jet merging with the dipole shower at LO and NLO QCD; spin …
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Mounting evidence for a 95 GeV Higgs boson Open
In 2018 CMS reported an excess in the light Higgs-boson search in the diphoton decay mode at about 95 GeV based on Run 1 and first year Run 2 data. The combined local significance of the excess was 2.8 σ. The excess is compatible with the …
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Phenomenology of a 96 GeV Higgs boson in the 2HDM with an additional singlet Open
We discuss a $\ensuremath{\sim}3\ensuremath{\sigma}$ signal (local) in the light Higgs-boson search in the diphoton decay mode at $\ensuremath{\sim}96\text{ }\text{ }\mathrm{GeV}$ as reported by CMS, together with a $\ensuremath{\sim}2\ens…
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The Black Book of Quantum Chromodynamics Open
The LHC (Large Hadron Collider) will serve as the energy frontier for high-energy physics for the next 20 years. The highlight of the LHC running so far has been the discovery of the Higgs boson, but the LHC programme has also consisted of…
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Muon Colliders Open
Muon colliders have a great potential for high-energy physics. They can offer collisions of point-like particles at very high energies, since muons can be accelerated in a ring without limitation from synchrotron radiation. However, the ne…
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B Physics at the Tevatron: Run II and Beyond Open
Starting in September 1999, a series of workshops was carried out to study the prospects for B physics at the Tevatron. There were four working groups covering CP Violation, Rare and Semileptonic Decays, Mixing and Lifetimes, as well as Pr…
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A general analysis of Wtb anomalous couplings Open
We investigate new physics effects on the Wtb effective couplings in a\nmodel-independent manner. The new physics effects are summarized as four\nindependent couplings $f_1^L$, $f_1^R$, $f_2^L$ and $f_2^R$. Using\nsingle-top-quark producti…
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Top-quark charge asymmetry at the LHC and Tevatron through NNLO QCD and NLO EW Open
We provide the most up-to-date predictions for the top-quark charge asymmetry\nA_C at the LHC with a centre-of-mass energy of 8 TeV. Our result is accurate at\nthe NNLO level in the strong interactions and at the complete-NLO level in both…
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Probing the Higgs portal at the Fermilab short-baseline neutrino experiments Open
The Fermilab short-baseline neutrino (SBN) experiments, MicroBooNE, ICARUS, and SBND, are expected to have significant sensitivity to light weakly coupled hidden sector particles. Here we study the capability of the SBN experiments to prob…
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Precision measurement of the -boson mass: Theoretical contributions and uncertainties Open
We perform a comprehensive analysis of electroweak, QED and mixed\nQCD-electroweak corrections underlying the precise measurement of the W-boson\nmass M_W at hadron colliders. By applying a template fitting technique, we\ndetail the impact…
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Coupling spans of the Higgs-like boson Open
Using the LHC and Tevatron data, we set upper and lower limits on the total width of the Higgs-like boson. The upper limit is based on the well-motivated assumption that the Higgs coupling to a W or Z pair is not much larger than in the St…
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μTRISTAN Open
The ultra-cold muon technology developed for the muon g − 2 experiment at J-PARC provides a low-emittance μ+ beam which can be accelerated and used for realistic collider experiments. We consider the possibility of new collider experiments…
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Proton colliders at the energy frontier Open
Since the first proton collisions at the CERN Intersecting Storage Rings (ISR) (Johnsen, 1973; Myers, 2010) [ 1,2 ], hadron colliders have defined the energy frontier (Scandale, 2014) [ 3 ]. Noteworthy are the conversion of the Super Proto…
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Mixing and <i>CP</i> Violation in the Charm System Open
In recent years charm physics has undergone a renaissance, which has been catalyzed by an unexpected and impressive set of experimental results from the B factories, the Tevatron, and LHCb. The existence of [Formula: see text] oscillations…
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Single top-quark production at the Tevatron and the LHC Open
This paper provides a review of the experimental studies of processes with a single top quark at the Tevatron proton-antiproton collider and the LHC proton-proton collider. Single top-quark production in the t-channel process has been meas…
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High precision measurement of the W-boson mass with the CDF II detector Open
The mass of the W boson, a mediator of the weak force between elementary particles, is tightly\nconstrained by the symmetries of the standard model of particle physics. We measure the W boson mass to be 80433.5 ± 9.4 MeV using data corresp…
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Phenomenology of enhanced light quark Yukawa couplings and the W±h charge asymmetry Open
I propose the measurement of the $W^\pm h$ charge asymmetry as a consistency test for the Standard Model (SM) Higgs, which is sensitive to enhanced Yukawa couplings of the first and second generation quarks. I present a collider analysis f…
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The photon PDF from high-mass Drell–Yan data at the LHC Open
Achieving the highest precision for theoretical predictions at the LHC requires the calculation of hard-scattering cross-sections that include perturbative QCD corrections up to (N)NNLO and electroweak (EW) corrections up to NLO. Parton di…
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Are there any challenges in the charmonia production and polarization at the LHC? Open
We analyze the inclusive prompt production of $\\psi^\\prime$, $\\chi_c$,\n$J/\\psi$ and $\\eta_c$ mesons at the LHC using the $k_T$-factorization approach.\nOur consideration is based on the off-shell production amplitudes for hard\nparto…
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Measurement of the inclusive J/ $$\psi $$ ψ polarization at forward rapidity in pp collisions at $$\mathbf {\sqrt{s} = 8}$$ s = 8 TeV Open
We report on the measurement of the inclusive J/ $\psi $ polarization parameters in pp collisions at a center of mass energy $\sqrt{s} = 8$ TeV with the ALICE detector at the LHC. The analysis is based on a data sample corresponding to an …