Browsing MIT Open Access Articles by Author "Eads, M."

Combined Forward-Backward Asymmetry Measurements in Top-Antitop Quark Production at the Tevatron

Aaltonen, T.; Abazov, V. M.; Abbott, B.; Acharya, B. S.; Adams, M.; e.a. (American Physical Society, 2018-01)

The CDF and D0 experiments at the Fermilab Tevatron have measured the asymmetry between yields of forward- and backward-produced top and antitop quarks based on their rapidity difference and the asymmetry between their ...

Jet and underlying event properties as a function of charged-particle multiplicity in proton–proton collisions at √s = 7 TeV

Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M; Tumasyan, A.; Adam, W.; e.a. (Springer Berlin Heidelberg, 2013-12)

Abstract Characteristics of multi-particle production in proton-proton collisions at √s = 7 TeV are studied as a function of the charged-particle multiplicity, N ch. The produced particles are separated into ...

Measurement of the t[bar over t] Production Cross Section in the All-Jet Final State in Pp Collisions at √s =7 TeV

Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M; Tumasyan, A.; Adam, W.; e.a. (Springer-Verlag, 2013-05)

A measurement is presented of the t[bar over t] production cross section (σ[subscript t[bar over t]]) in proton-proton collisions at a centre-of-mass energy of 7 TeV, in the all-jet final state that contains at least ...

Measurement of the W+W− cross section in pp collisions at $\sqrt{s} = 7\mbox{ TeV}$ and limits on anomalous WWγ and WWZ couplings

Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M; Tumasyan, A.; Adam, W.; e.a. (Springer Berlin Heidelberg, 2013-10)

A measurement of W+W− production in pp collisions at √s = 7 TeV is presented. The data were collected with the CMS detector at the LHC, and correspond to an in- tegrated luminosity of 4.92 ± 0.11 fb−¹. The W+W− candidates ...

Observation of a new boson with mass near 125 GeV in pp collisions at √s =7 and 8 TeV

Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; e.a. (Springer-Verlag/SISSA, 2013-06)

A detailed description is reported of the analysis used by the CMS Collaboration in the search for the standard model Higgs boson in pp collisions at the LHC, which led to the observation of a new boson. The data sample ...

Observation of s-Channel Production of Single Top Quarks at the Tevatron

Aaltonen, T.; Abazov, V. M.; Abbott, B.; Acharya, B. S.; Adams, M.; e.a. (American Physical Society, 2014-06)

We report the first observation of single-top-quark production in the s channel through the combination of the CDF and D0 measurements of the cross section in proton-antiproton collisions at a center-of-mass energy of ...

Search for exotic resonances decaying into WZ/ZZ in pp collisions at √s =7 TeV

Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; e.a. (Springer-Verlag/SISSA, 2013-02)

A search for new exotic particles decaying to the VZ final state is performed, where V is either a W or a Z boson decaying into two overlapping jets and the Z decays into a pair of electrons, muons or neutrinos. The analysis ...

Search for heavy quarks decaying into a top quark and a W or Z boson using lepton + jets events in pp collisions at s√=7TeV

Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M; Tumasyan, A.; Adam, W.; e.a. (Springer-Verlag, 2013-01)

Results are presented from a search for the pair-production of heavy quarks, QQ[overline appears over second Q], that decay exclusively into a top quark and a W or Z boson. The search is performed using a sample of ...

Search for microscopic black holes in pp collisions at √s=8 TeV

Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M; Tumasyan, A.; Adam, W.; e.a. (Springer Berlin Heidelberg, 2013-07)

A search for microscopic black holes and string balls is presented, based on a data sample of pp collisions at √s=8 TeV recorded by the CMS experiment at the Large Hadron Collider and corresponding to an integrated ...

Search for supersymmetry in final states with missing transverse energy and 0, 1, 2, or ≥3 b-quark jets in 7 TeV pp collisions using the variable α T

Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; e.a. (Springer-Verlag, 2013-01)

A search for supersymmetry in final states with jets and missing transverse energy is performed in pp collisions at a centre-of-mass energy of √s = 7 TeV. The data sample corresponds to an integrated luminosity of 4.98 ...

Search for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC

Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; e.a. (Springer-Verlag/SISSA, 2013-05)

Search for top-squark pair production in the single-lepton final state in pp collisions at √s = 8 TeV

Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M; Tumasyan, A.; Adam, W.; e.a. (Springer-Verlag, 2013-12)

This paper presents a search for the pair production of top squarks in events with a single isolated electron or muon, jets, large missing transverse momentum, and large transverse mass. The data sample corresponds to an ...

Searches for long-lived charged particles in pp collisions at √s =7 and 8 TeV

Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; e.a. (Springer-Verlag/SISSA, 2013-07)

Results of searches for heavy stable charged particles produced in pp collisions at √s =7 and 8 TeV are presented corresponding to an integrated luminosity of 5.0 fb⁻¹ and 18.8 fb⁻¹, respectively. Data collected with the ...

Studies of jet mass in dijet and W/Z + jet events

Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M; Tumasyan, A.; Adam, W.; e.a. (Springer-Verlag/SISSA, 2013-05)

Invariant mass spectra for jets reconstructed using the anti-kT and CambridgeAachen algorithms are studied for different jet “grooming” techniques in data corresponding to an integrated luminosity of 5 fb[superscript −1], ...

Study of exclusive two-photon production of W⁺W⁻ in pp collisions at √s =7 TeV and constraints on anomalous quartic gauge couplings

Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M; Tumasyan, A.; Adam, W.; e.a. (Springer-Verlag, 2013-07)

A search for exclusive or quasi-exclusive W+W− production by photon-photon interactions, pp → p(*)W+W−p(*), at √s = 7 TeV is reported using data collected by the CMS detector with an integrated luminosity of 5.05 fb⁻¹. ...

Tevatron Combination of Single-Top-Quark Cross Sections and Determination of the Magnitude of the Cabibbo-Kobayashi-Maskawa Matrix Element V[subscript tb]

Aaltonen, T.; Abazov, V. M.; Abbott, B.; Acharya, B. S.; Adams, M.; e.a. (American Physical Society, 2015-10)

We present the final combination of CDF and D0 measurements of cross sections for single-top-quark production in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV. The data correspond to total integrated ...

Tevatron Constraints on Models of the Higgs Boson with Exotic Spin and Parity Using Decays to Bottom-Antibottom Quark Pairs

Aaltonen, T.; Abazov, V. M.; Abbott, B.; Acharya, B. S.; Adams, M.; e.a. (American Physical Society, 2015-04)

Combined constraints from the CDF and D0 Collaborations on models of the Higgs boson with exotic spin J and parity P are presented and compared with results obtained assuming the standard model value J[superscript P] = ...

Tevatron Run II combination of the effective leptonic electroweak mixing angle

Aaltonen, T.; Abazov, V. M.; Abbott, B.; Acharya, B. S.; Adams, M.; e.a. (American Physical Society, 2018-06)

Drell-Yan lepton pairs produced in the process pp[over ¯]→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 ...