Дисертації з теми "Collider searches"
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Pratt, Tracey. "New physics searches in high mass dimuons at the collider detector at Fermilab." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269332.
Повний текст джерелаFawcett, William James. "Supersymmetry searches at the LHC and their interpretations." Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:562ef583-9686-4895-adb0-801d1abb291d.
Повний текст джерелаLane, Jenna Louise. "Prospects for charged Higgs Boson searches at the Large Hadron Collider with early ATLAS data." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/prospects-for-charged-higgs-boson-searches-at-the-large-hadron-collider-with-early-atlas-data(517a7a6c-02a0-4ccb-ab2f-2e483de3c972).html.
Повний текст джерелаOwen, Simon. "Multijet background estimation for supersymmetry searches using the ATLAS detector at the Large Hadron Collider." Thesis, University of Sheffield, 2012. http://etheses.whiterose.ac.uk/2854/.
Повний текст джерелаMiao, Xinyu. "Direct and Indirect Searches for New Physics at the Electroweak Scale." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/217061.
Повний текст джерелаDafinca, Alexandru. "Searches for supersymmetric partners of the bottom and top quarks with the ATLAS detector." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:7b5457ac-0521-4c8d-af03-d0a347ef3b60.
Повний текст джерелаGrout, Zara. "Supersymmetry searches in events with at least four leptons using the ATLAS detector at the Large Hadron Collider." Thesis, University of Sussex, 2015. http://sro.sussex.ac.uk/id/eprint/57321/.
Повний текст джерелаSparrow, Alexander. "Measurement of the polarisation of the W boson and application to supersymmetry searches at the Large Hadron Collider." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/10212.
Повний текст джерелаBuckingham, Ryan Mark. "Searches for new physics using Dijet Angular Distributions in proton-proton collisions at √s = 7 TeV collected with the ATLAS detector." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:25b20fa4-8e79-43b9-83de-225f17e333ea.
Повний текст джерелаVogl, Stefan [Verfasser], Alejandro [Akademischer Betreuer] Ibarra, and Björn [Akademischer Betreuer] Garbrecht. "Majorana Dark Matter: The Power of Direct, Indirect and Collider Searches / Stefan Vogl. Gutachter: Alejandro Ibarra ; Björn Garbrecht. Betreuer: Alejandro Ibarra." München : Universitätsbibliothek der TU München, 2014. http://d-nb.info/1053762119/34.
Повний текст джерелаChaus, Andrii. "Searches for Dark Matter particules and development of a pixellized readout of the Time Projection Chamber for the International Linear Collider (ILC)." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112300.
Повний текст джерелаThe International Linear Collider (ILC) is planned to be the next major project in the High Energy Physics. ILC is proposed to have two detectors, namely International Large Detector (ILD), and Silicon Detector (SiD). This thesis is done in the framework of the ILD. One of the main components of the ILD detector is the Time Projection Chamber (TPC). This PhD thesis concentrates on the development of TPC readout, based on integration of the Micro-pattern gas detectors (Micromegas) and CMOS pixel chips ("Timepix"). This new type of device is named "InGrid". Main requirements for "InGrid" is to achieve sensitivity to single electrons and a very high spatial resolution (~30 μm). In TPC one reconstructs tracks using 2D-charge profile on the TPC endplate and the third coordinate is derived from the drift time information. In Saclay mini-TPC was built. Using this mini-TPC, several prototype "Ingrid" detectors have been tested in the course of this PhD. In addition, 8-chips system named “Octopuce” was built to develop track reconstruction algorithms. We have performed several measurements using laboratory radioactive source in Saclay. In addition, the large modules were tested at a Large TPC Prototype (LP) in a test beam area at DESY. Results with two different modules were presented. Obtained results well agreed with theoretical prediction. The existence of Dark Matter provides a strong indication for the appearance of new phenomena near the electroweak scale, and the popular WIMP hypothesis is out there to be tested. Since the couplings of WIMPs to different species of Standard Model particles are a priori unknown, the investigation of WIMP production in e+e- collisions is fundamentally complementary to production in pp collisions or direct detection of primordial WIMPs scattering on nucleons. In this work we investigate the discovery (or exclusion) reach of the ILC based on the production of a pair of WIMPs, which recoils against an energetic photon from initial state radiation. We show that the ILC can discover this signature even if annihilation to electrons provides only a small fraction of the total dark matter annihilation rate in the early universe. We translated the sensitivity into mass scales of various effective operators and showed that the WIMPs mass and couplings can be measured at the percent level in case of an observation. Furthermore, WIMPs studies on ILC are complementary to current LHC in the mono-X final states, because they test WIMP-lepton coupling. LHC studies WIMP-proton coupling at the scale of 1 TeV. ILC could reach limits up to 2 TeV on the contact interaction scale Λ for the vector operator by using an integrated luminosity at 500 fb⁻¹, at the center-of-mass √s = 500 GeV with unpolarized beams. Moreover, proper polarization configurations allows to improve sensitivity for the Dark Matter searches at the ILC, assuming WIMPs pair couple differently to electron and positron for different operators
Beresford, Lydia Audrey. "Searches for dijet resonances using √s = 13 TeV proton-proton collision data recorded by the ATLAS detector at the Large Hadron Collider." Thesis, University of Oxford, 2017. http://ora.ox.ac.uk/objects/uuid:c516b04b-2763-487a-a633-6c506cec93ad.
Повний текст джерелаDimitriadi, Christina. "Unfolding of multivariate tools and statistical analysis for Higgs boson pair production searches in the ATLAS detector at the Large Hadron Collider." Thesis, Uppsala universitet, Högenergifysik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-394393.
Повний текст джерелаJimenez, Fabricio. "Model independent searches for New Physics using Machine Learning at the ATLAS experiment." Thesis, Université Clermont Auvergne (2017-2020), 2019. http://www.theses.fr/2019CLFAC030/document.
Повний текст джерелаWe address the problem of model-independent searches for New Physics (NP), at the Large Hadron Collider (LHC) using the ATLAS detector. Particular attention is paid to the development and testing of novel Machine Learning techniques for that purpose. The present work presents three main results. Firstly, we put in place a system for automatic generic signature monitoring within TADA, a software tool from ATLAS. We explored over 30 signatures in the data taking period of 2017 and no particular discrepancy was observed with respect to the Standard Model processes simulations. Secondly, we propose a collective anomaly detection method for model-independent searches for NP at the LHC. We propose the parametric approach that uses a semi-supervised learning algorithm. This approach uses penalized likelihood and is able to simultaneously perform appropriate variable selection and detect possible collective anomalous behavior in data with respect to a given background sample. Thirdly, we present preliminary studies on modeling background and detecting generic signals in invariant mass spectra using Gaussian processes (GPs) with no mean prior information. Two methods were tested in two datasets: a two-step procedure in a dataset taken from Standard Model simulations used for ATLAS General Search, in the channel containing two jets in the final state, and a three-step procedure from a simulated dataset for signal (Z′) and background (Standard Model) in the search for resonances in the top pair invariant mass spectrum case. Our study is a first step towards a method that takes advantage of GPs as a modeling tool that can be applied to several signatures in a more model independent setup
McFayden, Joshua A. "Searches for supersymmetric partners of third generation quarks and measurement of the tt ̄+Z process using the ATLAS detector at the CERN Large Hadron Collider." Thesis, University of Sheffield, 2013. http://etheses.whiterose.ac.uk/5264/.
Повний текст джерелаStörig, Kathrin [Verfasser], and Gregor [Akademischer Betreuer] Herten. "QCD background estimation for Supersymmetry searches with jets and missing transverse momentum with the ATLAS experiment at the Large Hadron Collider = QCD Untergrundbestimmung für Suchen nach Supersymmetrie in einem Kanal mit Jets und fehlender transversaler Energie mit dem ATLAS Experiment am Large Hadron Collider." Freiburg : Universität, 2012. http://d-nb.info/1123473129/34.
Повний текст джерелаWendland, Dennis Patrick. "Search for fourth generation b' quarks in same-sign dilepton final states with ATLAS." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2013. http://dx.doi.org/10.18452/16835.
Повний текст джерелаThis thesis presents a search for the production of down-type b'' anti-b'' quark-antiquark pairs of a sequential fourth generation of fermions. In this search, final states with two same-sign charged leptons (e or mu), at least two jets (including at least one b-jet), missing transverse energy and a large total sum of the transverse momenta of all electrons, muons and jets were considered. Two different scenarios were assumed for the decays of these $b'' anti-b'' quark pairs. In the first scenario the two b'' quarks were considered to decay exclusively into a t quark and a W boson. For the second scenario, variable branching fractions for the decays of the b'' quarks into tW, cW and uW were allowed. The search was performed using data from pp collisions at a center-of-mass energy of sqrt(s) = 8 TeV recorded by the ATLAS detector at the Large Hadron Collider. The used dataset corresponds to an integrated luminosity of 14.3 fb^-1. No significant excess of events over the background expectation was observed. Hence a lower limit on the b'' mass of 0.724 TeV was set with 95% confidence level in the first scenario. In case of the second scenario with variable branching fractions, exclusion areas with 95% confidence level were derived as a function of the b'' mass and its decay branching fractions. These limits are less stringent compared to the result assuming a branching fraction of 100% for b''->tW.
Love, Jeremy R. "A search for technicolor at the Large Hadron Collider." Thesis, Boston University, 2012. https://hdl.handle.net/2144/31586.
Повний текст джерелаPLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you.
The Standard Model of particle physics provides an accurate description of all experimental data to date. The only unobserved piece of the Standard Model is the Higgs boson, a consequence of the spontaneous breaking of electroweak symmetry by the Higgs mechanism. An alternative to the Higgs mechanism is proposed by Technicolor theories which break electroweak symmetry dynamically through a new force. Technicolor predicts many new particles, called Technihadrons, that could be observed by experiments at hadron colliders. This thesis presents a search for two of the lightest Technihadrons, the ρT and ωT . The Low-Scale Technicolor model predicts the phenomenology of these new states. The ρT and ωT are produced through qq annihilation and couple to Standard Model fermions through the Drell-Yan process, which can result in the dimuon final state. The ρT and ω T preferentially decay to the πT and a Standard Model gauge boson if kinematically allowed. Changing the mass of the πT relative to that of the ρT and ωT affects the cross section times branching fraction to dimuons. The ρT and ωT are expected to have masses below about 1 TeV. The Large Hadron Collider (LHC) at CERN outside of Geneva, Switzerland, produces proton-proton collisions with a center of mass energy of 7 TeV. A general purpose high energy physics detector ATLAS has been used in this analysis to search for Technihadrons decaying to two muons. We use the ATLAS detector to reconstruct the tracks of muons with high transverse momentum coming from these proton-proton collisions. The dimuon invariant mass spectrum is analyzed above 130 GeV to test the consistency of the observed data with the Standard Model prediction. We observe excellent agreement between our data and the background only hypothesis, and proceed to set limits on the cross section times branching ratio of the ρT and ωT as a function of their mass using the Low-Scale Technicolor model. We combine the dielectron and dimuon channels to exclude masses of the ρT and ωT between 130 GeV - 480 GeV at 95% Confidence Level for masses of the πT between 50 GeV - 480 GeV. In addition for the parameter choice of m(π T ) = m(ρT /ω T )- 100 GeV, 95% Confidence Level limits are set excluding masses of the ρT and ωT below 470 GeV. This analysis represents the current world's best limit on this model.
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Wells, Phillippa Scott. "Search for the top quark at the CERN pp collider." Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335204.
Повний текст джерелаWildish, Anthony James. "Search for double parton scattering at the CERN proton-antiproton collider." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47708.
Повний текст джерелаCoadou, Yann. "Searches for the Charged Higgs at Hadron Colliders Based on the Tau Lepton Signature." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3564.
Повний текст джерелаJarvis, Chad. "A search for Z boson pair production at the fermilab tevatron collider." College Park, Md.: University of Maryland, 2007. http://hdl.handle.net/1903/7624.
Повний текст джерелаThesis research directed by: Dept. of Physics. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Moeller, Victoria. "A search for strong gravity effects with the ATLAS experiment." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608295.
Повний текст джерелаKrop, Dan. "A search for neutral B meson oscillations at the Tevatron collider experiment DO." [Bloomington, Ind.] : Indiana University, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3264318.
Повний текст джерелаSource: Dissertation Abstracts International, Volume: 68-05, Section: B, page: 3121. Adviser: Rick Van Kooten. "Title from dissertation home page (viewed Jan. 24, 2008)."
Scoville, James. "Searching for new particles at the Large Hadron Collider : theory and methods for extradimensional supersymmetry." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:82d58c67-bb2a-4f03-b186-9e6524b5b255.
Повний текст джерелаBraithwaite, Jason John. "Visual search in space and time : where attention and inattention collide?" Thesis, University of Birmingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269885.
Повний текст джерелаAkatsuka, Shunichi. "Search for chargino and neutralino production using final states with two soft leptons in pp collisions at √s = 13 TeV." Kyoto University, 2020. http://hdl.handle.net/2433/253471.
Повний текст джерелаChapleau, Bertrand. "Search for top-antitop quark resonances with the ATLAS detector at the Large Hadron Collider." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=123013.
Повний текст джерелаLa nature intrigante du quark top, de loin la particule élémentaire la plus lourde du Modèle standard de la physique des particules, a motivé le développement de nom-breuses théories prédisant l'existence de nouvelles particules massives se désintégrant en une paire de quarks top-antitop. La production de ces particules hypoth étiques dans des collisions de type proton-proton au Grand collisionneur de hadrons (LHC) se manifesterait sous la forme d'une résonance dans la distribution de la masse invariante des paires de quarks top-antitop. La présente thèse consiste en une recherche d'une telle particule se désintégrant en une paire de quarks top-antitop dans l'état final dit semi-leptonique. La taille de l'échantillon de données analysé équivaut à 4.6 fb−1 à une énergie de centre de masse des collisions proton-proton de 7 TeV. Des techniques novatrices d'identification des produits de désintégrations de quarks top à grande énergie sont développées et utilisées. La présence d'une résonance dans la production de paires de quarks top-antitop n'a pu être établie et, conséquemment, des contraintes sont dérivées sur deux modèles théoriques. Des limites supérieures sur la section efficace de production multipliée par le rapport de branchement sont établies avec un niveau de crédibilité de 95% pour un boson Z′ leptophobique du modèle Topcolor, ainsi que pour un gluon Kaluza-Klein du modèle Randall-Sundrum. Le boson Z′ et le gluon Kaluza-Klein sont proscrits (avec un niveau de crédibilité de 95%) dans la région de masse 0.8-1.65 TeV et 0.8-1.88 TeV respectivement. Grâce à la grande énergie de centre de masse ainsi qu'aux techniques spécialisées d'identification des quarks top de grande énergie, les contraintes dérivées dans la présente thèse sur les deux modèles théoriques ici considérés sont plus restrictives que celles obtenues par le biais d'autres expériences.
Falla, R. J. "Search for Higgs boson pair production in the bƃbƃ final state at the Large Hadron Collider." Thesis, University College London (University of London), 2016. http://discovery.ucl.ac.uk/1482160/.
Повний текст джерелаLivermore, Sarah Stephanie Alexandra. "A search for massive top quark resonances with the ATLAS detector at the Large Hadron Collider." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:c826ed7f-1566-4a93-8675-d32ed3b97f7d.
Повний текст джерелаTua, Alan. "Search for supersymmetry using heavy flavour jets with the ATLAS detector at the Large Hadron Collider." Thesis, University of Sheffield, 2013. http://etheses.whiterose.ac.uk/3697/.
Повний текст джерелаTylmad, Maja. "Search for Weakly Produced Supersymmetric Particles in the ATLAS Experiment." Doctoral thesis, Stockholms universitet, Fysikum, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-108060.
Повний текст джерелаAt the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 2 and Paper 4: Technical report from the ATLAS experiment.
Marsden, Stephen Philip. "Search for diboson resonance production at sqrt(s) = 8 TeV with the ATLAS detector." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/search-for-diboson-resonance-production-at-sqrts--8-tev-with-the-atlas-detector(91f7ac80-2f2a-4c75-a21c-00063c527947).html.
Повний текст джерелаGregson, Samuel John. "Search for CP violation in charged D decays at the LHCb experiment." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708922.
Повний текст джерелаDe, Lorenzo Gianluca. "Search for the Production of Gluinos and Squarks with the CDF II Experiment at the Tevatron Collider." Doctoral thesis, Universitat Autònoma de Barcelona, 2010. http://hdl.handle.net/10803/3423.
Повний текст джерелаProcesos inclusivos producen señales características en los detectores, con la presencia de múltiples jets de hadrones y una gran energía transversa faltante.
Estas topologías corresponden a la producción de gluinos y squarks que decaen en múltiples quarks y gluones. Cuando se impone la conservación de R-Parity, a presencia de neutralinos estables (LSPs) en el estado final, que abandonan el detector, produce la señal de energía transversa faltante.
Esta Tesi incluye dos búsquedas de la producción de gluinos y squarks en entre protones y anti-protones con una energía en el centro de masas de 1.96 TeV con el experimento CDF II en el Tevatron de Chicago. La primera es la búsqueda inclusiva de gluinos y squarks y la secunda es la búsqueda de de una posible producción de squarks sbottom.
La tesi esta organizada como sigue: el capitulo 1 es una introducción a la teoría de súper-simetría; el capitulo 2 describe el Tevatron y el experimento CDF II; los capítulos 3 y 4 incluyen los detalles sobre las dos búsquedas. Finalmente, las conclusiones están en el capitulo 5.
According to the theory of Supersymmetry, squarks and gluinos are the supersymmetric partners of the Standard Model quarks and gluons. In the phenomenological framework assumed for this Thesis, squarks and gluinos are produced in pairs and ultimately decay into multiple partons and neutralinos, the lightest of the supersymmetric particles. The neutral and weakly interacting neutralinos escape the detector undetected. As a result, the final state is characterized by multiple jets of hadrons and large missing transverse energy.
This Thesis reports on two searches for the production of gluinos and squarks in proton-antiproton collisions at a center of mass energy of √s = 1.96 GeV with the CDF Run II experiment at the Tevatron collider. The first of the two analyses is an inclusive search for gluinos and squarks while the second one is dedicated to the search for direct pair production of sbottom squarks. The Thesis is organized as follows: Chapter 1 presents a brief introduction to Supersymmetry; Chapter 2 describes the Tevatron collider and the CDF II experiment; Chapter 3 and 4 are dedicated to the inclusive search for squarks and gluinos, and the exclusive search for sbottom squarks, respectively. Finally, Chapter 5 is devoted to conclusions.
Khoo, Teng Jian. "The hunting of the squark : experimental strategies in the search for supersymmetry at the Large Hadron Collider." Thesis, University of Cambridge, 2013. https://www.repository.cam.ac.uk/handle/1810/244670.
Повний текст джерелаZhu, Hongbo. "Photon conversion reconstruction and its application to the Higgs search in Atlas experiment at the Large Hadron Collider." Thesis, University of Sheffield, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.511997.
Повний текст джерелаOksuzian, Yuri. "Search for resonant production of top antitop pairs decaying into multi-jets at the collider detector at Fermilab." [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0041141.
Повний текст джерелаAbulaiti, Yiming. "Search for Pair-Produced Supersymmetric Top Quark Partners with the ATLAS Experiment." Doctoral thesis, Stockholms universitet, Fysikum, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-132289.
Повний текст джерелаClark, Brian. "A Search for New Resonant Phenomena in Dijet Final States With the ATLAS Detector at the Large Hadron Collider." Thesis, Harvard University, 2016. http://nrs.harvard.edu/urn-3:HUL.InstRepos:33493365.
Повний текст джерелаPhysics
Brinson, Jessica. "A search for disappearing tracks in proton-proton collisions at sqrt(s) = 8 TeV." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1428940893.
Повний текст джерелаJi, Weifeng. "Search for the decays of stopped exotic long-lived particles produced in P-P collisions at 13 TeV at CMS." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1524216345344165.
Повний текст джерелаHart, Andrew Evan. "Search for disappearing tracks in proton-proton collisions at √s = 13 TeV." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1517587469347379.
Повний текст джерелаAsbah, Nedaa Alexandra. "Search for the Production of a Standard Model Higgs Boson in Association with Top-Quarks and Decaying into a Pair of Bottom-Quarks with 13 TeV ATLAS Data." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19311.
Повний текст джерелаThis thesis presents the search for the Standard Model Higgs boson produced in association with a pair of top-quarks (ttH). The analysis uses a 36.1 1/fb dataset of proton-proton collisions collected with the ATLAS detector, at the Large Hadron Collider during 2015 and 2016. The selected events contain either one or two leptons from the decay of the top-quark pair. In order to improve the sensitivity of the search, events are split in regions according to the number of jets and how likely these events are to contain b-jets. Methods based on multivariate techniques were developed and applied in the signal-enriched regions to discriminate ttH events against background events being dominated by top pair production with additional b-jets. All analysis regions are combined in a statistical model using a profile likelihood fit to constrain the background predictions and reduce the systematic uncertainties. An excess of events over the expected Standard Model background is found with an observed (expected) significance of 1.4 (1.6) standard deviations. A ttH signal strength larger than 2.0 is excluded at the 95% confidence level.
Shcherbakova, Anna. "Calibration of b-tagging and search for Dark Matter : Calibration of b-tagging efficiency and search for Dark Matter production in association with heavy flavour quarks with the ATLAS experiment." Doctoral thesis, Stockholms universitet, Fysikum, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-146034.
Повний текст джерелаSantoyo, Castillo Itzebelt. "Search for supersymmetry in final states with three leptons and missing transverse energy with the ATLAS detector at the Large Hadron Collider." Thesis, University of Sussex, 2015. http://sro.sussex.ac.uk/id/eprint/54337/.
Повний текст джерелаReadioff, N. P. "Search for resonances decaying to a Z boson and a photon in the ATLAS Detector using data from the Large Hadron Collider." Thesis, University of Liverpool, 2016. http://livrepository.liverpool.ac.uk/3004762/.
Повний текст джерелаEdwards, Clive. "Search for the Higgs Boson in the process H→ZZ→llνν produced via vector-Boson fusion with the ATLAS detector". Thesis, Royal Holloway, University of London, 2012. http://repository.royalholloway.ac.uk/items/79b35bf5-8305-672c-108f-4f701dfeca56/9/.
Повний текст джерелаDucu, Otilia-Anamaria. "Search for new physics in events with same sign leptons and missing energy with ATLAS at LHC." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4053/document.
Повний текст джерелаFor the presented studies only the data recorded with the ATLAS detector is analyzed. The theoretical framework, the LHC collider and the ATLAS experiment are given in the first part of this thesis.At hadron colliders, the lepton identification and reconstruction are crucial for precise SM cross sections and coupling measurements or for new physics searches. Therefore, the second part of my thesis is dedicated to performance studies : in-situ measurements of electron identification and reconstruction efficiencies. The search for new physics is presented in the third part of the thesis. For these studies the channel with two same~- sign leptons and missing transverse energy is considered. The results are obtained with $L$~=~20 fb$^{-1}$ of data recorded at $sqrt s$ = 8 TeV and with the very first data at $sqrt s$ = 13 TeV. At the end of Run-1 no significant excess in data over the Standard Model prediction is observed and stringent limits on the supersymmetric particle masses are set. With the two same - sign leptons and jets final state it is also possible to measure directly the top quark Yukawa coupling using the ttbar + $H$ channel. This coupling is the largest in the Standard Model and it connects two of the heaviest particles predicted by the Standard Model, the top quark and the Higgs boson. In the fourth part of this thesis, a complete optimization is performed to reach the highest sensitivity for this signal in the two same~- sign leptons channel at $sqrt s$ = 13 TeV with 100 fb$^{-1}$ of data, corresponding to the end of Run-2
Nattermann, Till [Verfasser]. "Search for Supersymmetry with Tau Leptons, Muons, Missing Transverse Momentum and Jets with the ATLAS Experiment at the Large Hadron Collider / Till Nattermann." Bonn : Universitäts- und Landesbibliothek Bonn, 2013. http://d-nb.info/1044972017/34.
Повний текст джерела