Dijet Resonance Search with Weak Supervision Using s=13 TeV pp Collisions in the ATLAS Detector

Physical Review Letters American Physical Society (APS) 125:13 (2020) 131801

Authors:

G Aad, B Abbott, DC Abbott, A Abed Abud, K Abeling, DK Abhayasinghe, SH Abidi, OS AbouZeid, NL Abraham, H Abramowicz, H Abreu, Y Abulaiti, BS Acharya, B Achkar, L Adam, C Adam Bourdarios, L Adamczyk, L Adamek, J Adelman, M Adersberger, 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, K Al Khoury, GL Alberghi, J Albert, 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, BW Allen, 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, CS Amrouche, F An, 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, JA Aparisi Pozo, MA Aparo, L Aperio Bella, N Aranzabal Barrio, V Araujo Ferraz, R Araujo Pereira, C Arcangeletti, ATH Arce, FA Arduh, J-F Arguin, S Argyropoulos, J-H Arling, AJ Armbruster, A Armstrong, O Arnaez, H Arnold, ZP Arrubarrena Tame, G Artoni, K Asai, S Asai, T Asawatavonvanich, N Asbah, EM Asimakopoulou, L Asquith, J Assahsah, K Assamagan, R Astalos, RJ Atkin, M Atkinson, NB Atlay, H Atmani, K Augsten, VA Austrup, G Avolio, MK Ayoub, G Azuelos, H Bachacou, K Bachas, M Backes, F Backman, P Bagnaia, M Bahmani, H Bahrasemani, AJ Bailey, VR Bailey, JT Baines, C Bakalis, OK Baker, PJ Bakker, E Bakos, D Bakshi Gupta, S Balaji, EM Baldin, P Balek, F Balli, WK Balunas, J Balz, E Banas, M Bandieramonte, A Bandyopadhyay, Sw Banerjee, L Barak, WM Barbe, EL Barberio, D Barberis, M Barbero, G Barbour, T Barillari, M-S Barisits, J Barkeloo, T Barklow, R Barnea, BM Barnett, RM Barnett, Z Barnovska-Blenessy, A Baroncelli, G Barone, AJ Barr, L Barranco Navarro, F Barreiro, J Barreiro Guimarães da Costa, U Barron, S Barsov, F Bartels, R Bartoldus, G Bartolini, AE Barton, P Bartos, A Basalaev, A Basan, A Bassalat, MJ Basso, RL Bates, S Batlamous, JR Batley, B Batool, M Battaglia, M Bauce, F Bauer, KT Bauer, P Bauer, HS Bawa, A Bayirli, JB Beacham, T Beau, PH Beauchemin, F Becherer, P Bechtle, HC Beck, HP Beck, K Becker, C Becot, A Beddall, AJ Beddall, VA Bednyakov, M Bedognetti, CP Bee, TA Beermann, M Begalli, M Begel, A Behera, JK Behr, F Beisiegel, M Belfkir, AS Bell, G Bella, L Bellagamba, A Bellerive, P Bellos, K Beloborodov, K Belotskiy, NL Belyaev, D Benchekroun, N Benekos, 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, C Bertella, A Berthold, IA Bertram, O Bessidskaia Bylund, N Besson, A Bethani, S Bethke, A Betti, AJ Bevan, J Beyer, DS Bhattacharya, P Bhattarai, VS Bhopatkar, R Bi, RM Bianchi, O Biebel, D Biedermann, R Bielski, K Bierwagen, NV Biesuz, M Biglietti, TRV Billoud, M Bindi, A Bingul, C Bini, S Biondi, CJ Birch-sykes, M Birman, T Bisanz, JP Biswal, D Biswas, A Bitadze, C Bittrich, K Bjørke, T Blazek, I Bloch, C Blocker, A Blue, U Blumenschein, GJ Bobbink, VS Bobrovnikov, SS Bocchetta, D Boerner, D Bogavac, AG Bogdanchikov, C Bohm, V Boisvert, P Bokan, T Bold, AE Bolz, M Bomben, M Bona, JS Bonilla, M Boonekamp, CD Booth, AG Borbély, HM Borecka-Bielska, LS Borgna, A Borisov, G Borissov, D Bortoletto, D Boscherini, M Bosman, JD Bossio Sola, K Bouaouda, J Boudreau, EV Bouhova-Thacker, D Boumediene, SK Boutle, 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 Brüers, D Bruncko, A Bruni, G Bruni, LS Bruni, S Bruno, M Bruschi, N Bruscino, L Bryngemark, T Buanes, Q Buat, P Buchholz, AG Buckley, IA Budagov, MK Bugge, F Bührer, O Bulekov, BA Bullard, TJ Burch, S Burdin, CD Burgard, AM Burger, B Burghgrave, JTP Burr, CD Burton, JC Burzynski, V Büscher, E Buschmann, PJ Bussey, JM Butler, CM Buttar, JM Butterworth, P Butti, W Buttinger, CJ Buxo Vazquez, A Buzatu, AR Buzykaev, G Cabras, S Cabrera Urbán, D Caforio, H Cai, VMM Cairo, O Cakir, N Calace, P Calafiura, G Calderini, P Calfayan, G Callea, LP Caloba, A Caltabiano, S Calvente Lopez, D Calvet, S Calvet, TP Calvet, M Calvetti, R Camacho Toro, S Camarda, D Camarero Munoz, P Camarri, MT Camerlingo, D Cameron, C Camincher, S Campana, M Campanelli, A Camplani, V Canale, A Canesse, M Cano Bret, J Cantero, T Cao, Y Cao, MDM Capeans Garrido, M Capua, R Cardarelli, F Cardillo, G Carducci, I Carli, T Carli, G Carlino, BT Carlson, EM Carlson, L Carminati, RMD Carney, S Caron, E Carquin, S Carrá, G Carratta, JWS Carter, TM Carter, MP Casado, AF Casha, FL Castillo, L Castillo Garcia, V Castillo Gimenez, NF Castro, A Catinaccio, JR Catmore, A Cattai, V Cavaliere, V Cavasinni, E Celebi, F Celli, K Cerny, AS Cerqueira, A Cerri, L Cerrito, F Cerutti, A Cervelli, SA Cetin, Z Chadi, D Chakraborty, J Chan, WS Chan, WY Chan, JD Chapman, B Chargeishvili, DG Charlton, TP Charman, CC Chau, S Che, S Chekanov, SV Chekulaev, GA Chelkov, B Chen, C Chen, CH Chen, H Chen, J Chen, J Chen, J Chen, S Chen, SJ Chen, X Chen, Y Chen, Y-H Chen, HC Cheng, HJ Cheng, A Cheplakov, E Cheremushkina, R Cherkaoui El Moursli, E Cheu, K Cheung, TJA Chevalérias, L Chevalier, V Chiarella, G Chiarelli, G Chiodini, AS Chisholm, A Chitan, I Chiu, YH Chiu, MV Chizhov, K Choi, AR Chomont, YS Chow, LD Christopher, MC Chu, X Chu, J Chudoba, JJ Chwastowski, L Chytka, D Cieri, KM Ciesla, D Cinca, V Cindro, IA Cioară, A Ciocio, F Cirotto, ZH Citron, M Citterio, DA Ciubotaru, BM Ciungu, A Clark, MR Clark, PJ Clark, SE Clawson, C Clement, Y Coadou, M Cobal, A Coccaro, J Cochran, R Coelho Lopes De, H Cohen, AEC Coimbra, B Cole, AP Colijn, J Collot, P Conde Muiño, SH Connell, IA Connelly, S Constantinescu, F Conventi, AM Cooper-Sarkar, F Cormier, KJR Cormier, LD Corpe, M Corradi, EE Corrigan, F Corriveau, MJ Costa, F Costanza, D Costanzo, G Cowan, JW Cowley, J Crane, K Cranmer, RA Creager, S Crépé-Renaudin, F Crescioli, M Cristinziani, V Croft, G Crosetti, A Cueto, T Cuhadar Donszelmann, H Cui, AR Cukierman, WR Cunningham, S Czekierda, P Czodrowski, MM Czurylo, MJ Da Cunha Sargedas De Sousa, JV Da Fonseca Pinto, C Da Via, W Dabrowski, F Dachs, 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, O Dartsi, A Dattagupta, T Daubney, S D’Auria, C David, T Davidek, DR Davis, I Dawson, K De, R De Asmundis, M De Beurs, S De Castro, N De Groot, P de Jong, H De la Torre, A De Maria, D De Pedis, A De Salvo, U De Sanctis, M De Santis, A De Santo, JB De Vivie De Regie, C Debenedetti, DV Dedovich, AM Deiana, J Del Peso, Y Delabat Diaz, D Delgove, F Deliot, CM Delitzsch, M Della Pietra, D Della Volpe, A Dell’Acqua, L Dell’Asta, M Delmastro, C Delporte, PA Delsart, DA DeMarco, S Demers, M Demichev, G Demontigny, SP Denisov, L D’Eramo, D Derendarz, JE Derkaoui, F Derue, P Dervan, K Desch, K Dette, C Deutsch, MR Devesa, PO Deviveiros, FA Di Bello, A Di Ciaccio, L Di Ciaccio, WK Di Clemente, C Di Donato, A Di Girolamo, G Di Gregorio, B Di Micco, R Di Nardo, KF Di Petrillo, R Di Sipio, C Diaconu, FA Dias, T Dias Do Vale, MA Diaz, FG Diaz Capriles, J Dickinson, M Didenko, EB Diehl, J Dietrich, S Díez Cornell, C Diez Pardos, A Dimitrievska, W Ding, J Dingfelder, SJ Dittmeier, F Dittus, F Djama, T Djobava, JI Djuvsland, MAB Do Vale, M Dobre, 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 du Pree, Y Duan, F Dubinin, M Dubovsky, A Dubreuil, E Duchovni, G Duckeck, OA Ducu, D Duda, A Dudarev, AC Dudder, EM Duffield, M D’uffizi, L Duflot, M Dührssen, C Dülsen, M Dumancic, AE Dumitriu, M Dunford, A Duperrin, H Duran Yildiz, M Düren, A Durglishvili, D Duschinger, B Dutta, D Duvnjak, GI Dyckes, M Dyndal, S Dysch, BS Dziedzic, MG Eggleston, T Eifert, G Eigen, K Einsweiler, T Ekelof, H El Jarrari, V Ellajosyula, M Ellert, F Ellinghaus, AA Elliot, N Ellis, J Elmsheuser, M Elsing, D Emeliyanov, A Emerman, Y Enari, MB Epland, J Erdmann, A Ereditato, PA Erland, M Errenst, M Escalier, C Escobar, O Estrada Pastor, E Etzion, H Evans, MO Evans, A Ezhilov, F Fabbri, L Fabbri, V Fabiani, G Facini, RM Fakhrutdinov, S Falciano, PJ Falke, S Falke, J Faltova, Y Fang, Y Fang, G Fanourakis, M Fanti, M Faraj, A Farbin, A Farilla, EM Farina, T Farooque, SM Farrington, P Farthouat, F Fassi, P Fassnacht, D 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R-J Wang, R Wang, R Wang, SM Wang, WT Wang, W Wang, WX Wang, Y Wang, Z Wang, C Wanotayaroj, A Warburton, CP Ward, DR Wardrope, N Warrack, AT Watson, MF Watson, G Watts, BM Waugh, AF Webb, C Weber, MS Weber, SA Weber, SM Weber, AR Weidberg, J Weingarten, M Weirich, C Weiser, PS Wells, T Wenaus, B Wendland, T Wengler, S Wenig, N Wermes, M Wessels, TD Weston, K Whalen, AM Wharton, AS White, A White, MJ White, D Whiteson, BW Whitmore, W Wiedenmann, C Wiel, M Wielers, N Wieseotte, C Wiglesworth, LAM Wiik-Fuchs, HG Wilkens, LJ Wilkins, HH Williams, S Williams, S Willocq, PJ Windischhofer, I Wingerter-Seez, E Winkels, F Winklmeier, BT Winter, M Wittgen, M Wobisch, A Wolf, R Wölker, J Wollrath, MW Wolter, H Wolters, VWS Wong, NL Woods, SD Worm, BK Wosiek, KW Woźniak, K Wraight, SL Wu, X Wu, Y Wu, J Wuerzinger, TR Wyatt, BM Wynne, S Xella, L Xia, J Xiang, X Xiao, X Xie, I Xiotidis, D Xu, H Xu, H Xu, L Xu, T Xu, W Xu, Z Xu, Z Xu, B Yabsley, S Yacoob, K Yajima, DP Yallup, N Yamaguchi, Y Yamaguchi, A Yamamoto, M Yamatani, T Yamazaki, Y Yamazaki, J Yan, Z Yan, HJ Yang, HT Yang, S Yang, T Yang, X Yang, Y Yang, Z Yang, W-M Yao, YC Yap, Y Yasu, E Yatsenko, H Ye, J Ye, S Ye, I Yeletskikh, MR Yexley, E Yigitbasi, P Yin, K Yorita, K Yoshihara, CJS Young, C Young, J Yu, R Yuan, X Yue, M Zaazoua, B Zabinski, G Zacharis, E Zaffaroni, J Zahreddine, AM Zaitsev, T Zakareishvili, N Zakharchuk, S Zambito, D Zanzi, DR Zaripovas, SV Zeißner, C Zeitnitz, G Zemaityte, JC Zeng, O Zenin, T Ženiš, D Zerwas, M Zgubič, B Zhang, DF Zhang, G Zhang, J Zhang, Kaili Zhang, L Zhang, L Zhang, M Zhang, R Zhang, S Zhang, X Zhang, X Zhang, Y Zhang, Z Zhang, Z Zhang, P Zhao, Z Zhao, A Zhemchugov, Z Zheng, D Zhong, B Zhou, C Zhou, H Zhou, MS Zhou, M Zhou, N Zhou, Y Zhou, CG Zhu, C Zhu, HL Zhu, H Zhu, J Zhu, Y Zhu, X Zhuang, K Zhukov, V Zhulanov, D Zieminska, NI Zimine, S Zimmermann, Z Zinonos, M Ziolkowski, L Živković, G Zobernig, A Zoccoli, K Zoch, TG Zorbas, R Zou, L Zwalinski

SN 2018gjx reveals that some SNe Ibn are SNe IIb exploding in dense circumstellar material

(2020)

Authors:

SJ Prentice, K Maguire, I Boian, J Groh, J Anderson, C Barbarino, KA Bostroem, J Burke, P Clark, Y Dong, M Fraser, L Galbany, M Gromadzki, CP Gutiérrez, DA Howell, D Hiramatsu, C Inserra, PA James, E Kankare, H Kuncarayakti, PA Mazzali, C McCully, TE Müller-Bravo, M Nichol, C Pellegrino, SJ Smartt, J Sollerman, L Tartaglia, S Valenti, DR Young

Evaluation of probabilistic photometric redshift estimation approaches for The Rubin Observatory Legacy Survey of Space and Time (LSST)

Monthly Notices of the Royal Astronomical Society Oxford University Press 499:2 (2020) 1587-1606

Authors:

Sj Schmidt, Ai Malz, Jyh Soo, Ia Almosallam, M Brescia, S Cavuoti, J Cohen-Tanugi, Aj Connolly, J DeRose, Pe Freeman, Ml Graham, Kg Iyer, Matthew Jarvis, Jb Kalmbach, E Kovacs, Ab Lee, G Longo, Cb Morrison, Ja Newman, E Nourbakhsh, E Nuss, T Pospisil, H Tranin, Rh Wechsler, R Zhou, R Izbicki, LSST Dark Energy Sci Collaboration

Abstract:

Many scientific investigations of photometric galaxy surveys require redshift estimates, whose uncertainty properties are best encapsulated by photometric redshift (photo-z) posterior probability density functions (PDFs). A plethora of photo-z PDF estimation methodologies abound, producing discrepant results with no consensus on a preferred approach. We present the results of a comprehensive experiment comparing 12 photo-z algorithms applied to mock data produced for The Rubin Observatory Legacy Survey of Space and Time Dark Energy Science Collaboration. By supplying perfect prior information, in the form of the complete template library and a representative training set as inputs to each code, we demonstrate the impact of the assumptions underlying each technique on the output photo-z PDFs. In the absence of a notion of true, unbiased photo-z PDFs, we evaluate and interpret multiple metrics of the ensemble properties of the derived photo-z PDFs as well as traditional reductions to photo-z point estimates. We report systematic biases and overall over/underbreadth of the photo-z PDFs of many popular codes, which may indicate avenues for improvement in the algorithms or implementations. Furthermore, we raise attention to the limitations of established metrics for assessing photo-z PDF accuracy; though we identify the conditional density estimate loss as a promising metric of photo-z PDF performance in the case where true redshifts are available but true photo-z PDFs are not, we emphasize the need for science-specific performance metrics.

Galaxy zoo builder: Four-component photometric decomposition of spiral galaxies guided by citizen science

Astrophysical Journal IOP Publishing 900:2 (2020) 178

Authors:

Timothy K Lingard, Karen L Masters, Coleman Krawczyk, Chris Lintott, Sandor Kruk, Brooke Simmons, Robert Simpson, Steven Bamford, Robert C Nichol, Elisabeth Baeten

Abstract:

Multicomponent modeling of galaxies is a valuable tool in the effort to quantitatively understand galaxy evolution, yet the use of the technique is plagued by issues of convergence, model selection, and parameter degeneracies. These issues limit its application over large samples to the simplest models, with complex models being applied only to very small samples. We attempt to resolve this dilemma of "quantity or quality" by developing a novel framework, built inside the Zooniverse citizen-science platform, to enable the crowdsourcing of model creation for Sloan Digital Sky Survey galaxies. We have applied the method, including a final algorithmic optimization step, on a test sample of 198 galaxies, and examine the robustness of this new method. We also compare it to automated fitting pipelines, demonstrating that it is possible to consistently recover accurate models that either show good agreement with, or improve on, prior work. We conclude that citizen science is a promising technique for modeling images of complex galaxies, and release our catalog of models.

Augmenting machine learning photometric redshifts with Gaussian mixture models

Monthly Notices of the Royal Astronomical Society Oxford University Press 498:4 (2020) 5498-5510

Authors:

PW Hatfield, IA Almosallam, MJ Jarvis, N Adams, RAA Bowler, Z Gomes, SJ Roberts, C Schreiber

Abstract:

Wide-area imaging surveys are one of the key ways of advancing our understanding of cosmology, galaxy formation physics, and the large-scale structure of the Universe in the coming years. These surveys typically require calculating redshifts for huge numbers (hundreds of millions to billions) of galaxies – almost all of which must be derived from photometry rather than spectroscopy. In this paper, we investigate how using statistical models to understand the populations that make up the colour–magnitude distribution of galaxies can be combined with machine learning photometric redshift codes to improve redshift estimates. In particular, we combine the use of Gaussian mixture models with the high-performing machine-learning photo-z algorithm GPz and show that modelling and accounting for the different colour–magnitude distributions of training and test data separately can give improved redshift estimates, reduce the bias on estimates by up to a half, and speed up the run-time of the algorithm. These methods are illustrated using data from deep optical and near-infrared data in two separate deep fields, where training and test data of different colour–magnitude distributions are constructed from the galaxies with known spectroscopic redshifts, derived from several heterogeneous surveys.