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Morley, Anthony
Publications (6 of 6) Show all publications
Abbott, B., Morley, A. & Zwalinski, L. (2018). Production and integration of the ATLAS Insertable B-Layer. Journal of Instrumentation, 13(5), Article ID T05008.
Open this publication in new window or tab >>Production and integration of the ATLAS Insertable B-Layer
2018 (English)In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 13, no 5, article id T05008Article in journal (Refereed) Published
Abstract [en]

During the shutdown of the CERN Large Hadron Collider in 2013-2014, an additional pixel layer was installed between the existing Pixel detector of the ATLAS experiment and a new, smaller radius beam pipe. The motivation for this new pixel layer, the Insertable B-Layer (IBL), was to maintain or improve the robustness and performance of the ATLAS tracking system, given the higher instantaneous and integrated luminosities realised following the shutdown. Because of the extreme radiation and collision rate environment, several new radiation-tolerant sensor and electronic technologies were utilised for this layer. This paper reports on the IBL construction and integration prior to its operation in the ATLAS detector.

National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-239741 (URN)000432393600003 ()2-s2.0-85048046471 (Scopus ID)
Note

QC 20181203

Available from: 2018-12-03 Created: 2018-12-03 Last updated: 2018-12-03Bibliographically approved
Aad, G., Jovicevic, J., Kuwertz, E., Lund-Jensen, B., Morley, A., Strandberg, J., . . . et al., . (2016). Addendum to 'Measurement of the t (t)over-bar production cross-section using e mu events with b-tagged jets in pp collisions at root s = 7 and 8 TeV with the ATLAS detector'. European Physical Journal C, 76(11), Article ID 642.
Open this publication in new window or tab >>Addendum to 'Measurement of the t (t)over-bar production cross-section using e mu events with b-tagged jets in pp collisions at root s = 7 and 8 TeV with the ATLAS detector'
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2016 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 76, no 11, article id 642Article in journal (Refereed) Published
Place, publisher, year, edition, pages
Springer, 2016
National Category
Subatomic Physics
Identifiers
urn:nbn:se:kth:diva-204415 (URN)10.1140/epjc/s10052-016-4501-2 (DOI)000394382800002 ()
Note

QC 20170324

Available from: 2017-03-24 Created: 2017-03-24 Last updated: 2019-12-04Bibliographically approved
Aad, G., Jensen, B., Morley, A., Sidebo, P. E., Strandberg, J., Zwalinski, L. & et al, . (2016). Erratum to: Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector. European Physical Journal C, 76(3), Article ID 152.
Open this publication in new window or tab >>Erratum to: Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector
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2016 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 76, no 3, article id 152Article in journal (Refereed) Published
Place, publisher, year, edition, pages
SPRINGER, 2016
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-242661 (URN)10.1140/epjc/s10052-016-3934-y (DOI)000375303400003 ()2-s2.0-84962579539 (Scopus ID)
Note

QC 20190225

Available from: 2019-02-25 Created: 2019-02-25 Last updated: 2019-02-25Bibliographically approved
Aad, G., Lund-Jensen, B., Morley, A., Strandberg, J., Zwalinski, L. & et al., . (2016). Measurement of D-*+/-, D-+/- and D-S(+/-) meson production cross sections in pp collisions at root s=7 TeV with the ATLAS detector. Nuclear Physics B, 907, 717-763
Open this publication in new window or tab >>Measurement of D-*+/-, D-+/- and D-S(+/-) meson production cross sections in pp collisions at root s=7 TeV with the ATLAS detector
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2016 (English)In: Nuclear Physics B, ISSN 0550-3213, E-ISSN 1873-1562, Vol. 907, p. 717-763Article in journal (Refereed) Published
Abstract [en]

The production of D*(+/-), D-+/- and D-S(+/-) charmed mesons has been measured with the ATLAS detector in pp collisions at,/7s = 7 TeV at the LHC, using data corresponding to an integrated luminosity of 280 nb(-)1(.) The charmed mesons have been reconstructed in the range of transverse momentum 3.5 < p(T)(D) < 100 GeV and pseudorapidity vertical bar eta(D)vertical bar < 2.1. The differential cross sections as a function of transverse momentum and pseudorapidity were measured for D*(+/-) and D-+/- production. The next-to-leading-order QCD predictions are consistent with the data in the visible kinematic region within the large theoretical uncertainties. Using the visible D cross sections and an extrapolation to the full kinematic phase space, the strangeness -suppression factor in charm fragmentation, the fraction of charged non -strange D mesons produced in a vector state, and the total cross section of charm production at root s = 7 TeV were derived.

Keywords
QUARK FRAGMENTATION FUNCTION; DEEP-INELASTIC SCATTERING; HADRON-PRODUCTION; E(+)E(-) COLLISIONS; JET FRAGMENTATION; HERA; ANNIHILATION; CHARM; MODEL; FRACTIONS
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-189153 (URN)10.1016/j.nuclphysb.2016.04.032 (DOI)000376818000030 ()2-s2.0-84966309061 (Scopus ID)
Funder
Knut and Alice Wallenberg Foundation
Note

QC 20160628

Available from: 2016-06-28 Created: 2016-06-28 Last updated: 2018-05-17Bibliographically approved
Aad, G., Kuwertz, E., Lund-Jensen, B., Morley, A., Strandberg, J. & Zwalinski, L. (2015). Search for supersymmetry in events containing a same-flavour opposite-sign dilepton pair, jets, and large missing transverse momentum in root s = 8 TeV pp collisions with the ATLAS detector (vol 75, 318, 2015). European Physical Journal C, 75(10), 1-15, Article ID 463.
Open this publication in new window or tab >>Search for supersymmetry in events containing a same-flavour opposite-sign dilepton pair, jets, and large missing transverse momentum in root s = 8 TeV pp collisions with the ATLAS detector (vol 75, 318, 2015)
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2015 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 75, no 10, p. 1-15, article id 463Article in journal (Refereed) Published
Place, publisher, year, edition, pages
SPRINGER, 2015
National Category
Subatomic Physics
Identifiers
urn:nbn:se:kth:diva-243653 (URN)10.1140/epjc/s10052-015-3661-9 (DOI)000361995200001 ()2-s2.0-84942943871 (Scopus ID)
Note

QC 20190205

Available from: 2019-02-05 Created: 2019-02-05 Last updated: 2019-12-04Bibliographically approved
Aad, G., Jovicevic, J., Kuwertz, E., Lund-Jensen, B., Morley, A., Strandberg, J., . . . et al., . (2015). Search for W’→tb→qqbb decays in collisions at (Formula presented.) = 8 TeV with the ATLAS detector. European Physical Journal C, 75(4)
Open this publication in new window or tab >>Search for W’→tb→qqbb decays in collisions at (Formula presented.) = 8 TeV with the ATLAS detector
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2015 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 75, no 4Article in journal (Refereed) Published
Abstract [en]

A search for a massive W′ gauge boson decaying to a top quark and a bottom quark is performed with the ATLAS detector in pp collisions at the LHC. The datasetwas taken at a centre-of-mass energy of √s = 8 TeV and corresponds to 20.3 fb−1 of integrated luminosity. This analysis is done in the hadronic decay mode of the top quark, where novel jet substructure techniques are used to identify jets from high-momentum top quarks. This allows for a search for high-mass W′ bosons in the range 1.5-3.0 TeV. b-tagging is used to identify jets originating from b-quarks. The data are consistent with Standard Model background-only expectations, and upper limits at 95%confidence level are set on the W′ → tb cross section times branching ratio ranging from 0.16 pb to 0.33 pb for left-handed W′ bosons, and ranging from 0.10 pb to 0.21 pb for W′ bosons with purely righthanded couplings. Upper limits at 95% confidence level are set on the W′-boson coupling to tb as a function of the W′ mass using an effective field theory approach, which is independent of details of particular models predicting a W′ boson.

Place, publisher, year, edition, pages
Springer, 2015
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-169092 (URN)10.1140/epjc/s10052-015-3372-2 (DOI)2-s2.0-84951869663 (Scopus ID)
Note

QC 20150611

Available from: 2015-06-11 Created: 2015-06-11 Last updated: 2019-12-04Bibliographically approved
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