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ATLAS Preprints

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2015-07-31
19:13
Determination of the ratio of $b$-quark fragmentation fractions $f_s/f_d$ in $pp$ collisions at $\sqrt{s}=7$ TeV with the ATLAS detector / ATLAS Collaboration
With an integrated luminosity of 2.47 fb$^{-1}$ recorded by the ATLAS experiment at the LHC, the exclusive decays $B_{s}^{0}\rightarrow J/\psi\phi$ and $B_{d}^{0}\rightarrow J/\psi K^{*0}$ of $B$ mesons produced in $pp$ collisions at $\sqrt{s}=7$ TeV are used to determine the ratio of fragmentation fractions $f_s/f_d$. [...]
CERN-PH-EP-2015-165 ; arXiv:1507.08925.
- 2015. - 8 p.
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2015-07-29
16:44
Measurement of the branching ratio $\Gamma(\Lambda_b^0 \rightarrow \psi(2S)\Lambda^0)/\Gamma(\Lambda_b^0 \rightarrow J/\psi\Lambda^0)$ with the ATLAS detector / ATLAS Collaboration
An observation of the $\Lambda_b^0 \rightarrow \psi(2S) \Lambda^0$ decay and a comparison of its branching fraction with that of the $\Lambda_b^0 \rightarrow J/\psi \Lambda^0$ decay has been made with the ATLAS detector in proton--proton collisions at $\sqrt{s}=8\,$TeV at the LHC using an integrated luminosity of $20.6\,$fb$^{-1}$. [...]
CERN-PH-EP-2015-164 ; arXiv:1507.08202.
- 2015. - 12 p.
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2015-07-24
20:56
Study of the $B_c^+ \to J/\psi D_s^+$ and $B_c^+ \to J/\psi D_s^{*+}$ decays with the ATLAS detector / ATLAS Collaboration
The decays $B_c^+ \to J/\psi D_s^+$ and $B_c^+ \to J/\psi D_s^{*+}$ are studied with the ATLAS detector at the LHC using a dataset corresponding to integrated luminosities of 4.9 fb$^{-1}$ and 20.6 fb$^{-1}$ of $pp$ collisions collected at centre-of-mass energies $\sqrt{s} = 7$ TeV and 8 TeV, respectively. [...]
arXiv:1507.07099 ; CERN-PH-EP-2015-163.
- 2015. - 17 p.
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2015-07-22
00:39
$Z$ boson production in $p+$Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV measured with the ATLAS detector / ATLAS Collaboration
The ATLAS Collaboration has measured the inclusive production of $Z$ bosons via their decays into electron and muon pairs in $p+$Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV at the Large Hadron Collider. [...]
arXiv:1507.06232 ; CERN-PH-EP-2015-146.
- 2015. - 19 p.
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2015-07-21
19:52
Search for an additional, heavy Higgs boson in the $H\rightarrow ZZ$ decay channel at $\sqrt{s}$ = 8 TeV in $pp$ collision data with the ATLAS detector / ATLAS Collaboration
A search is presented for a high-mass Higgs boson in the $H\rightarrow\ell\ell\ell\ell$, $H\rightarrow\ell\ell\nu\nu$, $H\rightarrow\ell\ell qq$, and $H\rightarrow\nu\nu qq$ decay modes using the ATLAS detector at the CERN Large Hadron Collider. [...]
arXiv:1507.05930 ; CERN-PH-EP-2015-154.
- 2015. - 46 p.
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2015-07-20
16:48
Summary of the searches for squarks and gluinos using $\sqrt{s}$ = 8 TeV $pp$ collisions with the ATLAS experiment at the LHC / ATLAS Collaboration
A summary is presented of ATLAS searches for gluinos and first- and second-generation squarks in final states containing jets and missing transverse momentum, with or without leptons or $b$-jets, in the $\sqrt{s}$ = 8 TeV data set collected at the Large Hadron Collider in 2012. [...]
arXiv:1507.05525 ; CERN-PH-EP-2015-162.
- 2015. - 91 p.
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2015-07-18
09:37
Search for photonic signatures of gauge-mediated supersymmetry in 8 TeV $pp$ collisions with the ATLAS detector / ATLAS Collaboration
A search is presented for photonic signatures motivated by generalised models of gauge-mediated supersymmetry breaking. [...]
arXiv:1507.05493 ; CERN-PH-EP-2015-168.
- 2015. - 43 p.
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2015-07-14
18:54
Measurements of the Higgs boson production and decay rates and coupling strengths using $pp$ collision data at $\sqrt{s}=7$ and $8$ TeV in the ATLAS experiment / ATLAS Collaboration
Combined analyses of the Higgs boson production and decay rates as well as its coupling strengths to vector bosons and fermions are presented. [...]
arXiv:1507.04548 ; CERN-PH-EP-2015-125.
- 2015. - 64 p.
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2015-07-07
12:36
Determination of the top-quark pole mass using $t \bar{t}+1$-jet events collected with the ATLAS experiment in 7 TeV $pp$ collisions / ATLAS Collaboration
The normalized differential cross section for top-quark pair production in association with at least one jet is studied as a function of the inverse of the invariant mass of the $t \bar{t}+1$-jet system. [...]
arXiv:1507.01769 ; CERN-PH-EP-2015-100.
- 2015. - 23 p.
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2015-06-29
12:32
ATLAS Run 1 searches for direct pair production of third-generation squarks at the Large Hadron Collider / ATLAS Collaboration
This paper reviews and extends searches for the direct pair production of the scalar supersymmetric partners of the top and bottom quarks in proton--proton collisions collected by the ATLAS collaboration during the LHC Run 1. [...]
arXiv:1506.08616 ; CERN-PH-EP-2015-138.
- 2015. - 54 p.
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