Light-quark and gluon jet discrimination in pp collisions at √s = 7 TeV with the ATLAS detector

Aad, G. et al. (2014) Light-quark and gluon jet discrimination in pp collisions at √s = 7 TeV with the ATLAS detector. European Physical Journal C, 74(8), p. 3023. (doi: 10.1140/epjc/s10052-014-3023-z)

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A likelihood-based discriminant for the identification of quark- and gluon-initiated jets is built and validated using 4.7 fb −1 of proton–proton collision data at s√=7 TeV collected with the ATLAS detector at the LHC. Data samples with enriched quark or gluon content are used in the construction and validation of templates of jet properties that are the input to the likelihood-based discriminant. The discriminating power of the jet tagger is established in both data and Monte Carlo samples within a systematic uncertainty of ≈ 10–20 %. In data, light-quark jets can be tagged with an efficiency of ≈50% while achieving a gluon-jet mis-tag rate of ≈25% in a pT range between 40 GeV and 360 GeV for jets in the acceptance of the tracker. The rejection of gluon-jets found in the data is significantly below what is attainable using a Pythia 6 Monte Carlo simulation, where gluon-jet mis-tag rates of 10 % can be reached for a 50 % selection efficiency of light-quark jets using the same jet properties.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Oropeza Barrera, Mrs Cristina and Robson, Professor Aidan and Ferrando, Dr James and Wright, Mr Michael and Collins-Tooth, Dr Christopher and Doherty, Mr Thomas and Doyle, Professor Anthony and St Denis, Dr Richard and Gul, Dr Umar and Bates, Dr Richard and Quilty, Mr Donnchadha and Thompson, Dr Alan and O'Shea, Professor Val and Moraes, Mr Arthur and Kar, Dr Deepak and Steele, Miss Genevieve and Bussey, Dr Peter and Buttar, Professor Craig and Stewart, Dr Graeme and D'Auria, Dr Saverio and Gemmell, Mr Alistair and Britton, Professor David and Allwood-Spiers, Sarah and Ferrag, Dr Samir
Authors: Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., AbouZeid, O. S., Abramowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, B. S., Adamczyk, L., Adams, D. L., Adelman, J., Adomeit, S., Adye, T., Agatonovic-Jovin, T., Aguilar-Saavedra, J. A., Agustoni, M., Ahlen, S. P., Ahmad, A., Ahmadov, F., Aielli, G., Åkesson, T. P. A., Akimoto, G., Akimov, A. V., Albert, J., Albrand, S., Alconada Verzini, M. J., Aleksa, M., Aleksandrov, I. N., Alexa, C., Alexander, G., Alexandre, G., Alexopoulos, T., Alhroob, M., Alimonti, G., Alio, L., Alison, J., Allbrooke, B. M. M., Allison, L. J., Allport, P. P., Allwood-Spiers, S. E., Almond, J., Aloisio, A., Alonso, A., Alonso, F., Alpigiani, C., Altheimer, A., Alvarez Gonzalez, B., Alviggi, M. G., Amako, K., Amaral Coutinho, Y., Amelung, C., Amidei, D., Amor Dos Santos, S. P., Amorim, A., Amoroso, S., Amram, N., Amundsen, G., Anastopoulos, C., Ancu, L. S., Andari, N., Andeen, T., Anders, C. F., Anders, G., Anderson, K. J., Andreazza, A., Andrei, V., Anduaga, X. S., Angelidakis, S., Angelozzi, I., Anger, P., Angerami, A., Anghinolfi, F., Anisenkov, A. V., Anjos, N., Annovi, A., Antonaki, A., Antonelli, M., Antonov, A., Antos, J., Anulli, F., Aoki, M., Aperio Bella, L., Apolle, R., Arabidze, G., Aracena, I., Arai, Y., Araque, J. P., Arce, A. T. H., Arguin, J.-F., Argyropoulos, S., Arik, M., Armbruster, A. J., Arnaez, O., Arnal, V., Arnold, H., Arslan, O., Artamonov, A., Artoni, G., Asai, S., Asbah, N., Ashkenazi, A., Ask, S., Åsman, B., Asquith, L., Assamagan, K., Astalos, R., Atkinson, M., Atlay, N. B., Auerbach, B., Augsten, K., Aurousseau, M., Avolio, G., Azuelos, G., Azuma, Y., Baak, M. A., Bacci, C., Bachacou, H., Bachas, K., Backes, M., Backhaus, M., Backus Mayes, J., Badescu, E., Bagiacchi, P., Bagnaia, P., Bai, Y., Bain, T., Baines, J. T., Baker, O. K., Baker, S., Balek, P., Balli, F., Banas, E., Banerjee, S., Banfi, D., Bangert, A., Bannoura, A. A. E., Bansal, V., Bansil, H. S., Barak, L., Baranov, S. P., Barberio, E. L., Barberis, D., Barbero, M., Barillari, T., Barisonzi, M., Barklow, T., Barlow, N., Barnett, B. M., Barnett, R. M., Barnovska, Z., Baroncelli, A., Barone, G., Barr, A. J., Barreiro, F., Barreiro Guimarães da Costa, J., Bartoldus, R., Barton, A. E., Bartos, P., Bartsch, V., Bassalat, A., Basye, A., Bates, R. L., Batkova, L., Batley, J. R., Battistin, M., Bauer, F., Bawa, H. S., Beau, T., Beauchemin, P. H., Beccherle, R., Bechtle, P., Beck, H. P., Becker, K., Becker, S., Beckingham, M., Becot, C., Beddall, A. J., Beddall, A., Bedikian, S., Bednyakov, V. A., Bee, C. P., Beemster, L. J., Beermann, T. A., Begel, M., Behr, K., Belanger-Champagne, C., Bell, P. J., Bell, W. H., Bella, G., Bellagamba, L., Bellerive, A., Bellomo, M., Belloni, A., Belotskiy, K., Beltramello, O., Benary, O., Benchekroun, D., Bendtz, K., Benekos, N., Benhammou, Y., Benhar Noccioli, E., Benitez Garcia, J. A., Benjamin, D. P., Bensinger, J. R., Benslama, K., Bentvelsen, S., Berge, D., Bergeaas Kuutmann, E., Berger, N., Berghaus, F., Berglund, E., Beringer, J., Bernard, C., Bernat, P., Bernius, C., Bernlochner, F. U., Berry, T., Berta, P., Bertella, C., Bertolucci, F., Besana, M. I., Besjes, G. J., Bessidskaia, O., Besson, N., Betancourt, C., Bethke, S., Bhimji, W., Bianchi, R. M., Bianchini, L., Bianco, M., Biebel, O., Bieniek, S. P., Bierwagen, K., Biesiada, J., Biglietti, M., Bilbao De Mendizabal, J., Bilokon, H., Bindi, M., Binet, S., Bingul, A., Bini, C., Black, C. W., Black, J. E., Black, K. M., Blackburn, D., Blair, R. E., Blanchard, J.-B., Blazek, T., Bloch, I., Blocker, C., Blum, W., Blumenschein, U., Bobbink, G. J., Bobrovnikov, V. S., Bocchetta, S. S., Bocci, A., Boddy, C. R., Boehler, M., Boek, J., Boek, T. T., Bogaerts, J. A., Bogdanchikov, A. G., Bogouch, A., Bohm, C., Bohm, J., Boisvert, V., Bold, T., Boldea, V., Boldyrev, A. S., Bomben, M., Bona, M., Boonekamp, M., Borisov, A., Borissov, G., Borri, M., Borroni, S., Bortfeldt, J., Bortolotto, V., Bos, K., Boscherini, D., Bosman, M., Boterenbrood, H., Boudreau, J., Bouffard, J., Bouhova-Thacker, E. V., Boumediene, D., Bourdarios, C., Bousson, N., Boutouil, S., Boveia, A., Boyd, J., Boyko, I. R., Bozovic-Jelisavcic, I., Bracinik, J., Branchini, P., Brandt, A., Brandt, G., Brandt, O., Bratzler, U., Brau, B., Brau, J. E., Braun, H. M., Brazzale, S. F., Brelier, B., Brendlinger, K., Brennan, A. J., Brenner, R., Bressler, S., Bristow, K., Bristow, T. M., Britton, D., Brochu, F. M., Brock, I., Brock, R., Bromberg, C., Bronner, J., Brooijmans, G., Brooks, T., Brooks, W. K., Brosamer, J., Brost, E., Brown, G., Brown, J., Bruckman de Renstrom, P. A., Bruncko, D., Bruneliere, R., Brunet, S., Bruni, A., Bruni, G., Bruschi, M., Bryngemark, L., Buanes, T., Buat, Q., Bucci, F., Buchholz, P., Buckingham, R. M., Buckley, A. G., Buda, S. I., Budagov, I. A., Buehrer, F., Bugge, L., Bugge, M. K., Bulekov, O., Bundock, A. C., Burckhart, H., Burdin, S., Burghgrave, B., Burke, S., Burmeister, I., Busato, E., Büscher, D., Büscher, V., Bussey, P., Buszello, C. P., Butler, B., Butler, J. M., Butt, A. I., Buttar, C. M., Butterworth, J. M., Butti, P., Buttinger, W., Buzatu, A., Byszewski, M., Cabrera Urbán, S., Caforio, D., Cakir, O., Calafiura, P., Calandri, A., Calderini, G., Calfayan, P., Calkins, R., Caloba, L. P., Calvet, D., Calvet, S., Camacho Toro, R., Camarda, S., Cameron, D., Caminada, L. M., Caminal Armadans, R., Campana, S., Campanelli, M., Campoverde, A., Canale, V., Canepa, A., Cantero, J., Cantrill, R., Cao, T., Capeans Garrido, M. D. M., Caprini, I., Caprini, M., Capua, M., Caputo, R., Cardarelli, R., Carli, T., Carlino, G., Carminati, L., Caron, S., Carquin, E., , , , , , , , , , , , , , , , , , , , , , , , , , , and ,
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:European Physical Journal C
ISSN (Online):1434-6052
Copyright Holders:Copyright © 2014 CERN for the benefit of the ATLAS collaboration
First Published:First published in European Physical Journal C 74(8):3023
Publisher Policy:Reproduced under a Creative Commons License

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