8 documents found, page 1 of 1
Search for B-L R -parity-violating top squarks in $\sqrt s$ =13 TeV pp collisi...
ATLAS collaboration (2894 authors); Aguilar-Saavedra, Juan Antonio; Amor Dos Santos, Susana Patricia; Anjos, Nuno; Araque, Juan PedroA search is presented for the direct pair production of the stop, the supersymmetric partner of the top quark, that decays through an R-parity-violating coupling to a final state with two leptons and two jets, at least one of which is identified as a b-jet. The data set corresponds to an integrated luminosity of 36.1 fb-1 of proton-proton collisions at a center-of-mass energy of s=13 TeV, collected in 2015 an...
Comparison between simulated and observed LHC beam backgrounds in the ATLAS exp...
ATLAS collaboration (2894 authors); Aguilar Saavedra, Juan Antonio; Amor Dos Santos, Susana Patricia; Araque Espinosa, Juan Pedro; Castro, Nuno FilipeResults of dedicated Monte Carlo simulations of beam-induced background (BIB) in the ATLAS experiment at the Large Hadron Collider (LHC) are presented and compared with data recorded in 2012. During normal physics operation this background arises mainly from scattering of the 4 TeV protons on residual gas in the beam pipe. Methods of reconstructing the BIB signals in the ATLAS detector, developed and implemente...
Measurement of the exclusive $\gamma \gamma \rightarrow \mu^+ \mu^-$ process in...
ATLAS collaboration (2894 authors); Aguilar-Saavedra, Juan Antonio; Amor Dos Santos, Susana Patricia; Anjos, Nuno; Araque, Juan PedroThe production of exclusive γγ→μ+μ− events in proton–proton collisions at a centre-of-mass energy of 13 TeV is measured with the ATLAS detector at the LHC, using data corresponding to an integrated luminosity of 3.2 fb −1 . The measurement is performed for a dimuon invariant mass of 12GeV<mμ+μ−<70GeV . The integrated cross-section is determined within a fiducial acceptance region of the ATLAS detector and diffe...
Measurement of three-jet production cross-sections in $pp$ collisions at 7 TeV ...
ATLAS collaboration (2894 authors); Aguilar-Saavedra, Juan Antonio; Amor Dos Santos, Susana Patricia; Anjos, Nuno; Araque, Juan Pedro; Cantrill, RobertDouble-differential three-jet production cross-sections are measured in proton–proton collisions at a centre-of-mass energy of $\sqrt{s} = 7\mathrm \,TeV{}$ using the ATLAS detector at the large hadron collider. The measurements are presented as a function of the three-jet mass $(m_{jjj})$ , in bins of the sum of the absolute rapidity separations between the three leading jets $(\left| Y^{*}\right| )$ . Invaria...
Search for neutral Higgs bosons of the minimal supersymmetric standard model in...
ATLAS collaboration (2894 authors); Aguilar-Saavedra, Juan Antonio; Amor Dos Santos, Susana Patricia; Anjos, Nuno; Araque, Juan Pedro; Cantrill, RobertA search for the neutral Higgs bosons predicted by the Minimal Supersymmetric Standard Model (MSSM) is reported. The analysis is performed on data from proton-proton collisions at a centre-of-mass energy of 8 TeV collected with the ATLAS detector at the Large Hadron Collider. The samples used for this search were collected in 2012 and correspond to integrated luminosities in the range 19.5-20.3 fb$^{−1}$. The M...
Multi-channel search for squarks and gluinos in $\sqrt{s}=7$ TeV $pp$ collision...
ATLAS collaboration (2894 authors); Aguilar-Saavedra, Juan Antonio; Amor Dos Santos, Susana Patricia; Anjos, Nuno; Cantrill, Robert; Carvalho, JoãoA search for supersymmetric particles in final states with zero, one, and two leptons, with and without jets identified as originating from b-quarks, in 4.7 fb-1 of sqrt(s)=7 TeV pp collisions produced by the Large Hadron Collider and recorded by the ATLAS detector is presented. The search uses a set of variables carrying information on the event kinematics transverse and parallel to the beam line that are sens...
Search for a light charged Higgs boson in the decay channel $H^+ \to c\bar{s}$ ...
ATLAS collaboration (2894 authors); Aguilar-Saavedra, Juan Antonio; Amor Dos Santos, Susana Patricia; Anjos, Nuno; Cantrill, Robert; Carvalho, JoãoA search for a charged Higgs boson ($H^+$) in $t\bar{t}$ decays is presented, where one of the top quarks decays via $t \to H^+b$, followed by $H^+ \to$ two jets ($c\bar{s}$). The other top quark decays to Wb, where the W boson then decays into a lepton ($e/\mu$) and a neutrino. The data were recorded in pp collisions at $\sqrt{s}$ = 7 TeV by the ATLAS detector at the LHC in 2011, and correspond to an integrate...
Measurement of the inclusive jet cross section in pp collisions at sqrt(s)=2.76...
ATLAS collaboration (2894 authors); Aguilar-Saavedra, Juan Antonio; Amor Dos Santos, Susana Patricia; Anjos, Nuno; Cantrill, Robert; Carvalho, JoãoThe inclusive jet cross-section has been measured in proton–proton collisions at in a dataset corresponding to an integrated luminosity of collected with the ATLAS detector at the Large Hadron Collider in 2011. Jets are identified using the anti-k ( )t( ) algorithm with two radius parameters of 0.4 and 0.6. The inclusive jet double-differential cross-section is presented as a function of the jet transverse mome...