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  1. Outputs

Search for New Phenomena in Two-Body Invariant Mass Distributions Using Unsupervised Machine Learning for Anomaly Detection at s=13  TeV with the ATLAS Detector

Academic Article
Publication Date:
2024
abstract:
Searches for new resonances are performed using an unsupervised anomaly-detection technique. Events with at least one electron or muon are selected from 140 fb−1 of pp collisions at √s ¼ 13 TeV recorded by ATLAS at the Large Hadron Collider. The approach involves training an autoencoder on data, and subsequently defining anomalous regions based on the reconstruction loss of the decoder. Studies focus on nine invariant mass spectra that contain pairs of objects consisting of one light jet or b jet and either one lepton (e; μ), photon, or second light jet or b jet in the anomalous regions. No significant deviations from the background hypotheses are observed. Limits on contributions from generic Gaussian signals with various widths of the resonance mass are obtained for nine invariant masses in the anomalous regions.
Iris type:
1.1 Articolo in rivista
Keywords:
Particle physics, High energy physics
List of contributors:
Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.  j.; Abidi, S.  h.; Aboulhorma, A.; Abramowicz, H.; Abreu, H.; Abulaiti, Y.; Abusleme Hoffman, A.  c.; Acharya, B.  s.; Adam Bourdarios, C.; Adamczyk, L.; Adamek, L.; Addepalli, S.  v.; Addison, M.  j.; Adelman, J.; Adiguzel, A.; Adye, T.; Affolder, A.  a.; Afik, Y.; Agaras, M.  n.; Agarwala, J.; Aggarwal, A.; Agheorghiesei, C.; Ahmad, A.; Ahmadov, F.; Ahmed, W.  s.; Ahuja, S.; Ai, X.; Aielli, G.; Aikot, A.; Ait Tamlihat, M.; Aitbenchikh, B.; Aizenberg, I.; Akbiyik, M.; Åkesson, T.  p.  a.; Akimov, A.  v.; Akiyama, D.; Akolkar, N.  n.; Al Khoury, K.; Alberghi, G.  l.; Albert, J.; Albicocco, P.; Albouy, G.  l.; Alderweireldt, S.; Aleksa, M.; Aleksandrov, I.  n.; Alexa, C.; Alexopoulos, T.; Alfonsi, F.; Algren, M.; Alhroob, M.; Ali, B.; Ali, H.  m.  j.; Ali, S.; Alibocus, S.  w.; Aliev, M.; Alimonti, G.; Alkakhi, W.; Allaire, C.; Allbrooke, B.  m.  m.; Allen, J.  f.; Allendes Flores, C.  a.; Allport, P.  p.; Aloisio, A.; Alonso, F.; Alpigiani, C.; Alvarez Estevez, M.; Alvarez Fernandez, A.; Alves Cardoso, M.; Alviggi, M.  g.; Aly, M.; Amaral Coutinho, Y.; Ambler, A.; Amelung, C.; Amerl, M.; Ames, C.  g.; Amidei, D.; Amor Dos Santos, S.  p.; Amos, K.  r.; Ananiev, V.; Anastopoulos, C.; Andeen, T.; Anders, J.  k.; Andrean, S.  y.; Andreazza, A.; Angelidakis, S.; Angerami, A.; Anisenkov, A.  v.; Annovi, A.; Antel, C.; Anthony, M.  t.; Antipov, E.; Antonelli, M.; Anulli, F.; Aoki, M.; Aoki, T.; Aparisi Pozo, J.  a.; Aparo, M.  a.; Aperio Bella, L.; Appelt, C.; Apyan, A.; Aranzabal, N.; Arcangeletti, C.; Arce, A.  t.  h.; Arena, E.; Arguin, J-F.; Argyropoulos, S.; Arling, J. -H.; Arnaez, O.; Arnold, H.; Artoni, G.; Asada, H.; Asai, K.; Asai, S.; Asbah, N.  a.; Assahsah, J.; Assamagan, K.; Astalos, R.; Atashi, S.; Atkin, R.  j.; Atkinson, M.; Atmani, H.; Atmasiddha, P.  a.; Augsten, K.; Auricchio, S.; Auriol, A.  d.; Austrup, V.  a.; Avolio, G.; Axiotis, K.; Azuelos, G.; Babal, D.; Bachacou, H.; Bachas, K.; Bachiu, A.; Backman, F.; Badea, A.; Bagnaia, P.; Bahmani, M.; Bailey, A.  j.; Bailey, V.  r.; Baines, J.  t.; Baines, L.; Bakalis, C.; Baker, O.  k.; Bakos, E.; Bakshi Gupta, D.; Balakrishnan, V.; Balasubramanian, R.; Baldin, E.  m.; Balek, P.; Ballabene, E.; Balli, F.; Baltes, L.  m.; Balunas, W.  k.; Balz, J.; Banas, E.; Bandieramonte, M.; Bandyopadhyay, A.; Bansal, S.; Barak, L.; Barakat, M.; Barberio, E.  l.; Barberis, D.; Barbero, M.; Barends, K.  n.; Barillari, T.; Barisits, M-S.; Barklow, T.; Baron, P.; Baron Moreno, D.  a.; Baroncelli, A.; Barone, G.; Barr, A.  j.; Barr, J.  d.; Barranco Navarro, L.; Barreiro, F.; Barreiro Guimarães Da Costa, J.; Barron, U.; Barros Teixeira, M.  g.; Barsov, S.; Bartels, F.; Bartoldus, R.; Barton, A.  e.; Bartos, P.; Basan, A.; Baselga, M.; Bassalat, A.; Basso, M.  j.; Basson, C.  r.; Bates, R.  l.; Batlamous, S.; Batley, J.  r.; Batool, B.; Battaglia, M.; Battulga, D.; Bauce, M.; Bauer, M.; Bauer, P.; Bazzano Hurrell, L.  t.; Beacham, J.  b.; Beau, T.; Beauchemin, P.  h.; Becherer, F.; Bechtle, P.; Beck, H.  p.; Becker, K.; Beddall, A.  j.; Bednyakov, V.  a.; Bee, C.  p.; Beemster, L.  j.; Beermann, T.  a.; Begalli, M.; Begel, M.; Behera, A.; Behr, J.  k.; Beirer, J.  f.; Beisiegel, F.; Belfkir, M.; Bella, G.; Bellagamba, L.; Bellerive, A.; Bellos, P.; Beloborodov, K.; Belyaev, N.  l.; Benchekroun, D.; Bendebba, F.; Benhammou, Y.; Benoit, M.; Bensinger, J.  r.; Bentvelsen, S.; Beresford, L.; Beretta, M.; Bergeaas Kuutmann, E.; Berger, N.; Bergmann, B.; Beringer, J.; Bernardi, G.; Bernius, C.; Bernlochner, F.  u.; Bernon, F.; Berry, T.; Berta, P.; Berthold, A.; Bertram, I.  a.; Bethke, S.; Betti, A.; Bevan, A.  j.; Bhamjee, M.; Bhatta, S.; Bhattacharya, D.  s.; Bhattarai, P.; Bhopatkar, V.  s.; Bi, R.; Bianchi, R.  m.; Bianco, G.; Biebel, O.; Bielski,
Authors of the University:
GAUDIO GABRIELLA
INTROZZI GIANLUCA
NEGRI ANDREA
REBUZZI DANIELA MARCELLA
ROMANO EMANUELE
Handle:
https://iris.unipv.it/handle/11571/1526435
Published in:
PHYSICAL REVIEW LETTERS
Journal
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