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Insertion of STC into TRT at the Department of Physics, Oxford
Credit: CERN

Dr. Karolos Potamianos

Ernest Rutherford Fellow

Sub department

  • Particle Physics

Research groups

  • ATLAS
karolos.potamianos@physics.ox.ac.uk
Denys Wilkinson Building, room At CERN
  • About
  • Publications

Observation of electroweak production of two jets in association with an isolated photon and missing transverse momentum, and search for a Higgs boson decaying into invisible particles at 13 $$\text {TeV}$$ with the ATLAS detector

The European Physical Journal C SpringerOpen 82:2 (2022) 105

Authors:

G Aad, B Abbott, DC Abbott, A Abed Abud, K Abeling, DK Abhayasinghe, SH Abidi, A Aboulhorma, H Abramowicz, H Abreu, Y Abulaiti, AC Abusleme Hoffman, BS Acharya, B Achkar, L Adam, C Adam Bourdarios, L Adamczyk, L Adamek, SV Addepalli, J Adelman, A Adiguzel, S Adorni, T Adye, AA Affolder, Y Afik

Abstract:

This paper presents a measurement of the electroweak production of two jets in association with a Zγ pair, with the Z boson decaying into two neutrinos. It also presents a search for invisible or partially invisible decays of a Higgs boson with a mass of 125 GeV produced through vectorboson fusion with a photon in the final state. These results use data from LHC proton–proton collisions at sqrt(s) = 13 TeV collected with the ATLAS detector and corresponding to an integrated luminosity of 139 fb−1. The event signature, shared by all benchmark processes considered for the measurements and searches, is characterized by a significant amount of unbalanced transverse momentum and a photon in the final state, in addition to a pair of forward jets. Electroweak Zγ production in association with two jets is observed in this final state with a significance of 5.2 (5.1 expected) standard deviations. The measured fiducial cross-section for this process is 1.31 ± 0.29 fb. An observed (expected) upper limit of 0.37 (0.34+0.15 −0.10) at 95% confidence level is set on the branching ratio of a 125 GeV Higgs boson to invisible particles, assuming the Standard Model production cross-section. The signature is also interpreted in the context of decays of a Higgs boson into a photon and a dark photon. An observed (expected) 95% CL upper limit on the branching ratio for this decay is set at 0.018 (0.017+0.007−0.005), assuming the Standard Model production cross-section for a 125 GeV Higgs boson
More details from the publisher
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Measurement of the c-jet mistagging efficiency in t(t)over-bar events using pp collision data at root s=13 TeV collected with the ATLAS detector

EUROPEAN PHYSICAL JOURNAL C 82:1 (2022) ARTN 95

Authors:

G Aad, B Abbott, DC Abbott, A Abed Abud, K Abeling, DK Abhayasinghe, SH Abidi, A Aboulhorma, H Abramowicz, H Abreu, Y Abulaiti, AC Abusleme Hoffman, BS Acharya, B Achkar, L Adam, C Adam Bourdarios, L Adamczyk, L Adamek, SV Addepalli, J Adelman, A Adiguzel, S Adorni, T Adye, AA Affolder, Y Afik, C Agapopoulou, MN Agaras, J Agarwala, A Aggarwal, C Agheorghiesei, JA Aguilar-Saavedra, A Ahmad, F Ahmadov, WS Ahmed, X Ai, G Aielli, I Aizenberg, S Akatsuka, M Akbiyik, TPA Akesson, AV Akimov, K Al Khoury, GL Alberghi, J Albert, P Albicocco, MJ Alconada Verzini, S Alderweireldt, M Aleksa, IN Aleksandrov, C Alexa, T Alexopoulos, A Alfonsi, F Alfonsi, M Alhroob, B Ali, S Ali, M Aliev, G Alimonti, C Allaire, BMM Allbrooke, PP Allport, A Aloisio, F Alonso, C Alpigiani, E Alunno Camelia, M Alvarez Estevez, MG Alviggi, Y Amaral Coutinho, A Ambler, L Ambroz, C Amelung, D Amidei, SP Amor Dos Santos, S Amoroso, KR Amos, CS Amrouche, V Ananiev, C Anastopoulos, N Andari, T Andeen, JK Anders, SY Andrean, A Andreazza, S Angelidakis, A Angerami, AV Anisenkov, A Annovi, C Antel, MT Anthony, E Antipov, M Antonelli, DJA Antrim, F Anulli, M Aoki, JA Aparisi Pozo, MA Aparo, L Aperio Bella, N Aranzabal, V Araujo Ferraz, C Arcangeletti, ATH Arce, E Arena, J-F Arguin, S Argyropoulos, J-H Arling, AJ Armbruster, A Armstrong, O Arnaez, H Arnold, ZP Arrubarrena Tame, G Artoni, H Asada, K Asai, S Asai, NA Asbah, EM Asimakopoulou, L Asquith, J Assahsah, K Assamagan, R Astalos, RJ Atkin, M Atkinson, NB Atlay, H Atmani, PA Atmasiddha, K Augsten, S Auricchio, VA Austrup, G Avner, G Avolio, MK Ayoub, G Azuelos, D Babal, H Bachacou, K Bachas, A Bachiu, F Backman, A Badea, P Bagnaia, H Bahrasemani, AJ Bailey, VR Bailey, JT Baines, C Bakalis, OK Baker, PJ Bakker, E Bakos, D Bakshi Gupta, S Balaji, R Balasubramanian, EM Baldin, P Balek, E Ballabene, F Balli, LM Baltes, WK Balunas, J Balz, E Banas, M Bandieramonte, A Bandyopadhyay, S Bansal, L Barak, EL Barberio, D Barberis, M Barbero, G Barbour, KN Barends, T Barillari, M-S Barisits, J Barkeloo, T Barklow, BM Barnett, RM Barnett, A Baroncelli, G Barone, AJ Barr, L Barranco Navarro, F Barreiro, J Barreiro Guimaraes da Costa, U Barron, S Barsov, F Bartels, R Bartoldus, G Bartolini, AE Barton, P Bartos, A Basalaev, A Basan, M Baselga, I Bashta, A Bassalat, MJ Basso, CR Basson, RL Bates, S Batlamous, JR Batley, B Batool, M Battaglia, M Bauce, F Bauer, P Bauer, HS Bawa, A Bayirli, JB Beacham, T Beau, PH Beauchemin, F Becherer, P Bechtle, HP Beck, K Becker, C Becot, AJ Beddall, VA Bednyakov, CP Bee, TA Beermann, M Begalli, M Begel, A Behera, JK Behr, C BeiraoDaCruzESilva, JF Beirer, F Beisiegel, M Belfkir, G Bella, L Bellagamba, A Bellerive, P Bellos, K Beloborodov, K Belotskiy, NL Belyaev, D Benchekroun, Y Benhammou, DP Benjamin, M Benoit, JR Bensinger, S Bentvelsen, L Beresford, M Beretta, D Berge, E Bergeaas Kuutmann, N Berger, B Bergmann, LJ Bergsten, J Beringer, S Berlendis, G Bernardi, C Bernius, FU Bernlochner, T Berry, P Berta, A Berthold, IA Bertram, O Bessidskaia Bylund, S Bethke, A Betti, AJ Bevan, S Bhatta, DS Bhattacharya, P Bhattarai, VS Bhopatkar, R Bi, R Bi, RM Bianchi, O Biebel, R Bielski, NV Biesuz, M Biglietti, TRV Billoud, M Bindi, A Bingul, C Bini, S Biondi, A Biondini, CJ Birch-sykes, GA Bird, M Birman, T Bisanz, JP Biswal, D Biswas, A Bitadze, C Bittrich, K Bjorke, I Bloch, C Blocker, A Blue, U Blumenschein, J Blumenthal, GJ Bobbink, VS Bobrovnikov, M Boehler, D Bogavac, AG Bogdanchikov, C Bohm, V Boisvert, P Bokan, T Bold, M Bomben, M Bona, M Boonekamp, CD Booth, AG Borbely, HM Borecka-Bielska, LS Borgna, G Borissov, D Bortoletto, D Boscherini, M Bosman, JD BossioSola, K Bouaouda, J Boudreau, EV Bouhova-Thacker, D Boumediene, R Bouquet, A Boveia, J Boyd, D Boye, IR Boyko, AJ Bozson, J Bracinik, N Brahimi, G Brandt, O Brandt, F Braren, B Brau, JE Brau, WD Breaden Madden, K Brendlinger, R Brener, L Brenner, R Brenner, S Bressler, B Brickwedde, DL Briglin, D Britton, D Britzger, I Brock, R Brock, G Brooijmans, WK Brooks, E Brost, PA Bruckman de Renstrom, B Bruers, D Bruncko, A Bruni, G Bruni, M Bruschi, N Bruscino, L Bryngemark, T Buanes, Q Buat, P Buchholz, AG Buckley, IA Budagov, MK Bugge, O Bulekov, BA Bullard, S Burdin, CD Burgard, AM Burger, B Burghgrave, JTP Burr, CD Burton, JC Burzynski, EL Busch, V Buscher, PJ Bussey, JM Butler, CM Buttar, JM Butterworth, W Buttinger, CJ Buxo Vazquez, AR Buzykaev, G Cabras, S Cabrera Urban, D Caforio, H Cai, VMM Cairo, O Cakir, N Calace, P Calafiura, G Calderini, P Calfayan, G Callea, LP Caloba, D Calvet, S Calvet, TP Calvet, M Calvetti, R Camacho Toro, S Camarda, D Camarero Munoz, P Camarri, MT Camerlingo, D Cameron, C Camincher, M Campanelli, A Camplani, V Canale, A Canesse, M Cano Bret, J Cantero, F Capocasa, M Capua, A Carbone, R Cardarelli, JCJ Cardenas, F Cardillo, G Carducci, T Carli, G Carlino, BT Carlson, EM Carlson, L Carminati, M Carnesale, RMD Carney, S Caron, E Carquin, S Carra, G Carratta, JWS Carter, TM Carter, D Casadei, MP Casado, AF Casha, EG Castiglia, FL Castillo, L Castillo Garcia, V Castillo Gimenez, NF Castro, A Catinaccio, JR Catmore, A Cattai, V Cavaliere, N Cavalli, V Cavasinni, E Celebi, F Celli, MS Centonze, K Cerny, AS Cerqueira, A Cerri, L Cerrito, F Cerutti, A Cervelli, SA Cetin, Z Chadi, D Chakraborty, M Chala, J Chan, WS Chan, WY Chan, JD Chapman, B Chargeishvili, DG Charlton, TP Charman, M Chatterjee, S Chekanov, SV Chekulaev, GA Chelkov, A Chen, B Chen, B Chen, C Chen, CH Chen, H Chen, H Chen, J Chen, J Chen, S Chen, SJ Chen, X Chen, X Chen, Y Chen, Y-H Chen, CL Cheng, HC Cheng, A Cheplakov, E Cheremushkina, E Cherepanova, R Cherkaoui El Moursli, E Cheu, K Cheung, L Chevalier, V Chiarella, G Chiarelli, G Chiodini, AS Chisholm, A Chitan, YH Chiu, MV Chizhov, K Choi, AR Chomont, Y Chou, YS Chow, T Chowdhury, LD Christopher, MC Chu, X Chu, J Chudoba, JJ Chwastowski, D Cieri, KM Ciesla, V Cindro, A Ciocio, F Cirotto, ZH Citron, M Citterio, DA Ciubotaru, BM Ciungu, A Clark, PJ Clark, JM Clavijo Columbie, SE Clawson, C Clement, L Clissa, Y Coadou, M Cobal, A Coccaro, J Cochran, RF Coelho Barrue, R Coelho Lopes De Sa, S Coelli, H Cohen, AEC Coimbra, B Cole, J Collot, P Conde Muino, SH Connell, IA Connelly, EI Conroy, F Conventi, HG Cooke, AM Cooper-Sarkar, F Cormier, LD Corpe, M Corradi, EE Corrigan, F Corriveau, MJ Costa, F Costanza, D Costanzo, BM Cote, G Cowan, JW Cowley, K Cranmer, S Crepe-Renaudin, F Crescioli, M Cristinziani, M Cristoforetti, V Croft, G Crosetti, A Cueto, T Cuhadar Donszelmann, H Cui, AR Cukierman, WR Cunningham, F Curcio, P Czodrowski, MM Czurylo, MJ Da Cunha Sargedas De Sousa, Fonseca Pinto JV Da, C DaVia, W Dabrowski, T Dado, S Dahbi, T Dai, C Dallapiccola, M Dam, G D'amen, V D'Amico, J Damp, JR Dandoy, MF Daneri, M Danninger, V Dao, G Darbo, S Darmora, A Dattagupta, S D'Auria, C David, T Davidek, DR Davis, B Davis-Purcell, I Dawson, K De, R De Asmundis, M De Beurs, S De Castro, N De Groot, P de Jong, H DelaTorre, A De Maria, D De Pedis, A De Salvo, U De Sanctis, M De Santis, A De Santo, JB De Vivie De Regie, DV Dedovich, J Degens, AM Deiana, J Del Peso, Y Delabat Diaz, F Deliot, CM Delitzsch, M Della Pietra, D Della Volpe, A Dell'Acqua, L Dell'Asta, M Delmastro, PA Delsart, S Demers, M Demichev, SP Denisov, L D'Eramo, D Derendarz, JE Derkaoui, F Derue, P Dervan, K Desch, K Dette, C Deutsch, PO Deviveiros, FA Di Bello, A Di Ciaccio, L Di Ciaccio, A Di Domenico, C Di Donato, A Di Girolamo, G Di Gregorio, A Di Luca, B Di Micco, R Di Nardo, C Diaconu, FA Dias, T DiasDoVale, MA Diaz, FG Diaz Capriles, J Dickinson, M Didenko, EB Diehl, J Dietrich, S Diez Cornell, C Diez Pardos, A Dimitrievska, W Ding, J Dingfelder, I-M Dinu, SJ Dittmeier, F Dittus, F Djama, T Djobava, JI Djuvsland, MAB DoVale, D Dodsworth, C Doglioni, J Dolejsi, Z Dolezal, M Donadelli, B Dong, J Donini, A D'Onofrio, M D'Onofrio, J Dopke, A Doria, MT Dova, AT Doyle, E Drechsler, E Dreyer, T Dreyer, AS Drobac, D Du, TA DuPree, F Dubinin, M Dubovsky, A Dubreuil, E Duchovni, G Duckeck, OA Ducu, D Duda, A Dudarev, M D'uffizi, L Duflot, M Duhrssen, C Dulsen, AE Dumitriu, M Dunford, S Dungs, K Dunne, A Duperrin, H Duran Yildiz, M Duren, A Durglishvili, B Dutta, GI Dyckes, M Dyndal, S Dysch, BS Dziedzic, B Eckerova, MG Eggleston, E Egidio Purcino De Souza, LF Ehrke, T Eifert, G Eigen, K Einsweiler, T Ekelof, Y El Ghazali, H ElJarrari, A El Moussaouy, V Ellajosyula, M Ellert, F Ellinghaus, AA Elliot, N Ellis, J Elmsheuser, M Elsing, D Emeliyanov, A Emerman, Y Enari, J Erdmann, A Ereditato, PA Erland, M Errenst, M Escalier, C Escobar, O Estrada Pastor, E Etzion, G Evans, H Evans, MO Evans, A Ezhilov, F Fabbri, L Fabbri, G Facini, V Fadeyev, RM Fakhrutdinov, S Falciano, S Falke, J Faltova, Y Fan, Y Fang, Y Fang, G Fanourakis, M Fanti, M Faraj, A Farbin, A Farilla, EM Farina, T Farooque, SM Farrington, P Farthouat, F Fassi, D Fassouliotis, M Faucci Giannelli, WJ Fawcett, L Fayard, OL Fedin, G Fedotov, M Feickert, L Feligioni, A Fell, C Feng, M Feng, MJ Fenton, AB Fenyuk, SW Ferguson, J Ferrando, A Ferrari, P Ferrari, R Ferrari, D Ferrere, C Ferretti, F Fiedler, F Filthaut, MCN Fiolhais, L Fiorini, F Fischer, WC Fisher, T Fitschen, I Fleck, P Fleischmann, T Flick, BM Flierl, L Flores, M Flores, LR Flores Castillo, FM Follega, N Fomin, JH Foo, BC Forland, A Formica, FA Forster, AC Forti, E Fortin, MG Foti, L Fountas, D Fournier, H Fox, P Francavilla, S Francescato, M Franchini, S Franchino, D Francis, L Franco, L Franconi, M Franklin, G Frattari, AC Freegard, PM Freeman, WS Freund, EM Freundlich, D Froidevaux, JA Frost, Y Fu, M Fujimoto, E Fullana Torregrosa, J Fuster, A Gabrielli, A Gabrielli, P Gadow, G Gagliardi, LG Gagnon, GE Gallardo, EJ Gallas, BJ Gallop, R Gamboa Goni, KK Gan, S Ganguly, J Gao, Y Gao, YS Gao, FM Garay Walls, C Garcia, JE Garcia Navarro, JA Garcia Pascual, M Garcia-Sciveres, RW Gardner, D Garg, RB Garg, S Gargiulo, CA Garner, V Garonne, SJ Gasiorowski, P Gaspar, G Gaudio, P Gauzzi, IL Gavrilenko, A Gavrilyuk, C Gay, G Gaycken, EN Gazis, AA Geanta, CM Gee, CNP Gee, J Geisen, M Geisen, C Gemme, MH Genest, S Gentile, S George, WF George, T Geralis, LO Gerlach, P Gessinger-Befurt, M Ghasemi Bostanabad, A Ghosh, A Ghosh, B Giacobbe, S Giagu, N Giangiacomi, P Giannetti, A Giannini, SM Gibson, M Gignac, DT Gil, BJ Gilbert, D Gillberg, G Gilles, NEK Gillwald, DM Gingrich, MP Giordani, PF Giraud, G Giugliarelli, D Giugni, F Giuli, I Gkialas, P Gkountoumis, LK Gladilin, C Glasman, GR Gledhill, M Glisic, I Gnesi, M Goblirsch-Kolb, D Godin, S Goldfarb, T Golling, D Golubkov, JP Gombas, A Gomes, R Goncalves Gama, R Goncalo, G Gonella, L Gonella, A Gongadze, F Gonnella, JL Gonski, S Gonzalez de la Hoz, S Gonzalez Fernandez, R Gonzalez Lopez, C Gonzalez Renteria, R Gonzalez Suarez, S Gonzalez-Sevilla, GR Gonzalvo Rodriguez, RY Gonzalez Andana, L Goossens, NA Gorasia, PA Gorbounov, HA Gordon, B Gorini, E Gorini, A Gorisek, AT Goshaw, MI Gostkin, CA Gottardo, M Gouighri, V Goumarre, AG Goussiou, N Govender, C Goy, I Grabowska-Bold, K Graham, E Gramstad, S Grancagnolo, M Grandi, V Gratchev, PM Gravila, FG Gravili, HM Gray, C Grefe, IM Gregor, P Grenier, K Grevtsov, C Grieco, NA Grieser, AA Grillo, K Grimm, S Grinstein, J-F Grivaz, S Groh, E Gross, J Grosse-Knetter, C Grud, A Grummer, JC Grundy, L Guan, W Guan, C Gubbels, J Guenther, JGR Guerrero Rojas, F Guescini, D Guest, R Gugel, A Guida, T Guillemin, S Guindon, J Guo, L Guo, Y Guo, R Gupta, S Gurbuz, G Gustavino, M Guth, P Gutierrez, LF Gutierrez Zagazeta, C Gutschow, C Guyot, C Gwenlan, CB Gwilliam, ES Haaland, A Haas, M Habedank, C Haber, HK Hadavand, A Hadef, S Hadzic, M Haleem, J Haley, JJ Hall, G Halladjian, GD Hallewell, L Halser, K Hamano, H Hamdaoui, M Hamer, GN Hamity, K Han, L Han, L Han, S Han, YF Han, K Hanagaki, M Hance, MD Hank, R Hankache, E Hansen, JB Hansen, JD Hansen, MC Hansen, PH Hansen, K Hara, T Harenberg, S Harkusha, YT Harris, PF Harrison, NM Hartman, NM Hartmann, Y Hasegawa, A Hasib, S Hassani, S Haug, R Hauser, M Havranek, CM Hawkes, RJ Hawkings, S Hayashida, D Hayden, C Hayes, RL Hayes, CP Hays, JM Hays, HS Hayward, SJ Haywood, F He, Y He, MP Heath, V Hedberg, AL Heggelund, ND Hehir, C Heidegger, KK Heidegger, WD Heidorn, J Heilman, S Heim, T Heim, B Heinemann, JG Heinlein, JJ Heinrich, L Heinrich, J Hejbal, L Helary, A Held, CM Helling, S Hellman, C Helsens, RCW Henderson, L Henkelmann, AM Henriques Correia, H Herde, Y Hernandez Jimenez, H Herr, MG Herrmann, T Herrmann, G Herten, R Hertenberger, L Hervas, NP Hessey, H Hibi, S Higashino, E Higon-Rodriguez, KH Hiller, SJ Hillier, M Hils, I Hinchliffe, F Hinterkeuser, M Hirose, S Hirose, D Hirschbuehl, B Hiti, O Hladik, J Hobbs, R Hobincu, N Hod, MC Hodgkinson, BH Hodkinson, A Hoecker, J Hofer, D Hohn, T Holm, TR Holmes, M Holzbock, LBAH Hommels, BP Honan, J Hong, TM Hong, Y Hong, JC Honig, A Hoenle, BH Hooberman, WH Hopkins, Y Horii, LA Horyn, S Hou, J Howarth, J Hoya, M Hrabovsky, A Hrynevich, T Hryn'ova, PJ Hsu, S-C Hsu, Q Hu, S Hu, DP Huang, X Huang, Y Huang, Y Huang, Z Hubacek, F Hubaut, M Huebner, F Huegging, TB Huffman, M Huhtinen, SK Huiberts, R Hulsken, N Huseynov, J Huston, J Huth, R Hyneman, S Hyrych, G Iacobucci, G Iakovidis, I Ibragimov, L Iconomidou-Fayard, P Iengo, R Iguchi, T Iizawa, Y Ikegami, A Ilg, N Ilic, H Imam, T Ingebretsen Carlson, G Introzzi, M Iodice, V Ippolito, M Ishino, W Islam, C Issever, S Istin, JM Iturbe Ponce, R Iuppa, A Ivina, JM Izen, V Izzo, P Jacka, P Jackson, RM Jacobs, BP Jaeger, CS Jagfeld, G Jaekel, K Jakobs, T Jakoubek, J Jamieson, KW Janas, G Jarlskog, AE Jaspan, M Javurkova, F Jeanneau, L Jeanty, J Jejelava, P Jenni, S Jezequel, J Jia, Z Jia, Y Jiang, S Jiggins, J Jimenez Pena, S Jin, A Jinaru, O Jinnouchi, H Jivan, P Johansson, KA Johns, CA Johnson, DM Jones, E Jones, RWL Jones, TJ Jones, J Jovicevic, X Ju, JJ Junggeburth, A Juste Rozas, S Kabana, A Kaczmarska, M Kado, H Kagan, M Kagan, A Kahn, A Kahn, C Kahra, T Kaji, E Kajomovitz, CW Kalderon, A Kamenshchikov, M Kaneda, NJ Kang, S Kang, Y Kano, D Kar, K Karava, MJ Kareem, I Karkanias, SN Karpov, ZM Karpova, V Kartvelishvili, AN Karyukhin, E Kasimi, C Kato, J Katzy, K Kawade, K Kawagoe, T Kawaguchi, T Kawamoto, G Kawamura, EF Kay, FI Kaya, S Kazakos, VF Kazanin, Y Ke, JM Keaveney, R Keeler, JS Keller, AS Kelly, D Kelsey, JJ Kempster, J Kendrick, KE Kennedy, O Kepka, S Kersten, BP Kersevan, S Ketabchi Haghighat, M Khandoga, A Khanov, AG Kharlamov, T Kharlamova, EE Khoda, TJ Khoo, G Khoriauli, E Khramov, J Khubua, S Kido, M Kiehn, A Kilgallon, E Kim, YK Kim, N Kimura, A Kirchhoff, D Kirchmeier, C Kirfel, J Kirk, AE Kiryunin, T Kishimoto, DP Kisliuk, C Kitsaki, O Kivernyk, T Klapdor-Kleingrothaus, M Klassen, C Klein, L Klein, MH Klein, M Klein, U Klein, P Klimek, A Klimentov, F Klimpel, T Klingl, T Klioutchnikova, FF Klitzner, P Kluit, S Kluth, E Kneringer, TM Knight, A Knue, D Kobayashi, R Kobayashi, M Kobel, M Kocian, T Kodama, P Kodys, DM Koeck, PT Koenig, T Koffas, NM Kohler, M Kolb, I Koletsou, T Komarek, K Koneke, AXY Kong, T Kono, V Konstantinides, N Konstantinidis, B Konya, R Kopeliansky, S Koperny, K Korcyl, K Kordas, G Koren, A Korn, S Korn, I Korolkov, EV Korolkova, N Korotkova, B Kortman, O Kortner, S Kortner, WH Kostecka, VV Kostyukhin, A Kotsokechagia, A Kotwal, A Koulouris, A Kourkoumeli-Charalampidi, C Kourkoumelis, E Kourlitis, O Kovanda, R Kowalewski, W Kozanecki, AS Kozhin, VA Kramarenko, G Kramberger, P Kramer, D Krasnopevtsev, MW Krasny, A Krasznahorkay, JA Kremer, J Kretzschmar, K Kreul, P Krieger, F Krieter, S Krishnamurthy, A Krishnan, M Krivos, K Krizka, K Kroeninger, H Kroha, J Kroll, J Kroll, KS Krowpman, U Kruchonak, H Kruger, N Krumnack, MC Kruse, JA Krzysiak, A Kubota, O Kuchinskaia, S Kuday, D Kuechler, JT Kuechler, S Kuehn, T Kuhl, V Kukhtin, Y Kulchitsky, S Kuleshov, M Kumar, N Kumari, M Kuna, A Kupco, T Kupfer, O Kuprash, H Kurashige, LL Kurchaninov, YA Kurochkin, A Kurova, MG Kurth, ES Kuwertz, M Kuze, AK Kvam, J Kvita, T Kwan, KW Kwok, C Lacasta, F Lacava, H Lacker, D Lacour, NN Lad, E Ladygin, R Lafaye, B Laforge, T Lagouri, S Lai, IK Lakomiec, N Lalloue, JE Lambert, S Lammers, W Lampl, C Lampoudis, E Lancon, U Landgraf, MPJ Landon, VS Lang, JC Lange, RJ Langenberg, AJ Lankford, F Lanni, K Lantzsch, A Lanza, A Lapertosa, JF Laporte, T Lari, F Lasagni Manghi, M Lassnig, V Latonova, TS Lau, A Laudrain, A Laurier, M Lavorgna, SD Lawlor, Z Lawrence, M Lazzaroni, B Le, B Leban, A Lebedev, M LeBlanc, T LeCompte, F Ledroit-Guillon, ACA Lee, GR Lee, L Lee, SC Lee, S Lee, LL Leeuw, B Lefebvre, HP Lefebvre, M Lefebvre, C Leggett, K Lehmann, N Lehmann, G Lehmann Miotto, WA Leight, A Leisos, MAL Leite, CE Leitgeb, R Leitner, KJC Leney, T Lenz, S Leone, C Leonidopoulos, A Leopold, C Leroy, R Les, CG Lester, M Levchenko, J Leveque, D Levin, LJ Levinson, DJ Lewis, B Li, B Li, C Li, C-Q Li, H Li, H Li, H Li, J Li, K Li, L Li, M Li, QY Li, S Li, T Li, X Li, Y Li, Z Li, Z Li, Z Li, Z Li, Z Liang, M Liberatore, B Liberti, K Lie, J Lieber Marin, K Lin, RA 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Emulating the impact of additional proton–proton interactions in the ATLAS simulation by presampling sets of inelastic Monte Carlo events

Computing and Software for Big Science 6:1 (2022)

Authors:

G Aad, B Abbott, DC Abbott, AA Abud, K Abeling, DK Abhayasinghe, SH Abidi, OS AbouZeid, NL Abraham, H Abramowicz, H Abreu, Y Abulaiti, ACA Hoffman, BS Acharya, B Achkar, L Adam, CA Bourdarios, L Adamczyk, L Adamek, J Adelman, A Adiguzel, S Adorni, T Adye, AA Affolder, Y Afik, C Agapopoulou, MN Agaras, A Aggarwal, C Agheorghiesei, JA Aguilar-Saavedra, A Ahmad, F Ahmadov, WS Ahmed, X Ai, G Aielli, S Akatsuka, M Akbiyik, TPA Åkesson, E Akilli, AV Akimov, KA Khoury, GL Alberghi, J Albert, MJA Verzini, S Alderweireldt, M Aleksa, IN Aleksandrov, C Alexa, T Alexopoulos, A Alfonsi, F Alfonsi, M Alhroob, B Ali, S Ali, M Aliev, G Alimonti, C Allaire, BMM Allbrooke, PP Allport, A Aloisio, F Alonso, C Alpigiani, EA Camelia, MA Estevez, MG Alviggi, YA Coutinho, A Ambler, L Ambroz, C Amelung, D Amidei, SPAD Santos, S Amoroso, CS Amrouche, C Anastopoulos, N Andari, T Andeen, JK Anders, SY Andrean, A Andreazza, V Andrei, CR Anelli, S Angelidakis, A Angerami, AV Anisenkov, A Annovi, C Antel, MT Anthony, E Antipov, M Antonelli, DJA Antrim, F Anulli, M Aoki, JAA Pozo, MA Aparo, LA Bella, N Aranzabal, VA Ferraz, C Arcangeletti, ATH Arce, JF Arguin

Abstract:

The accurate simulation of additional interactions at the ATLAS experiment for the analysis of proton–proton collisions delivered by the Large Hadron Collider presents a significant challenge to the computing resources. During the LHC Run 2 (2015–2018), there were up to 70 inelastic interactions per bunch crossing, which need to be accounted for in Monte Carlo (MC) production. In this document, a new method to account for these additional interactions in the simulation chain is described. Instead of sampling the inelastic interactions and adding their energy deposits to a hard-scatter interaction one-by-one, the inelastic interactions are presampled, independent of the hard scatter, and stored as combined events. Consequently, for each hard-scatter interaction, only one such presampled event needs to be added as part of the simulation chain. For the Run 2 simulation chain, with an average of 35 interactions per bunch crossing, this new method provides a substantial reduction in MC production CPU needs of around 20%, while reproducing the properties of the reconstructed quantities relevant for physics analyses with good accuracy.
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Search for exotic decays of the Higgs boson into b$$ \overline{b} $$ and missing transverse momentum in pp collisions at $$ \sqrt{s} $$ = 13 TeV with the ATLAS detector

Journal of High Energy Physics Springer 2022:1 (2022) 63

Authors:

G Aad, B Abbott, DC Abbott, A Abed Abud, K Abeling, DK Abhayasinghe, SH Abidi, H Abramowicz, H Abreu, Y Abulaiti, AC Abusleme Hoffman, BS Acharya, B Achkar, L Adam, C Adam Bourdarios, L Adamczyk, L Adamek, SV Addepalli, J Adelman, A Adiguzel, S Adorni, T Adye, AA Affolder, Y Afik, C Agapopoulou

Abstract:

A summary of results in heavy flavour physics from Run 1 of the LHC is presented. Topics discussed include spectroscopy, mixing, CP violation and rare decays of charmed and beauty hadrons.Comment: 25 pages, 9 figures (total 17 subfigures). Invited review for Comptes Rendus de Physique de l'Academie des Science
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Operation and performance of the ATLAS semiconductor tracker in LHC Run 2

Journal of Instrumentation IOP Publishing 17:01 (2022) P01013-P01013

Authors:

Georges Aad, Brad Abbott, Dale Charles Abbott, Adam Abed Abud, Kira Abeling, Deshan Kavishka Abhayasinghe, Syed Haider Abidi, Asmaa Aboulhorma, Halina Abramowicz, Henso Abreu, Yiming Abulaiti, Angel Christian Abusleme Hoffman, Bobby Samir Acharya, Baida Achkar, Lennart Adam, Claire Adam Bourdarios, Sagar Vidya Addepalli, Melike Akbiyik, Torsten Paul Ake Åkesson, Andrei Akimov, Konie Al Khoury, Martin Aleksa, Igor Aleksandrov, Calin Alexa

Abstract:

<jats:title>Abstract</jats:title> <jats:p>The semiconductor tracker (SCT) is one of the tracking systems for charged particles in the ATLAS detector. It consists of 4088 silicon strip sensor modules. During Run 2 (2015–2018) the Large Hadron Collider delivered an integrated luminosity of 156 fb<jats:sup>-1</jats:sup> to the ATLAS experiment at a centre-of-mass proton-proton collision energy of 13 TeV. The instantaneous luminosity and pile-up conditions were far in excess of those assumed in the original design of the SCT detector. Due to improvements to the data acquisition system, the SCT operated stably throughout Run 2. It was available for 99.9% of the integrated luminosity and achieved a data-quality efficiency of 99.85%. Detailed studies have been made of the leakage current in SCT modules and the evolution of the full depletion voltage, which are used to study the impact of radiation damage to the modules.</jats:p>
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