Quantum Discord and Steering in Top Quarks at the LHC

被引：56

作者：

Afik, Yoav ^{[1
]}

de Nova, Juan Ramon Munoz ^{[2
]}

机构：

[1] CERN, Expt Phys Dept, CH-1211 Geneva, Switzerland

[2] Univ Complutense Madrid, Dept Fis Mat, E-28040 Madrid, Spain

来源：

PHYSICAL REVIEW LETTERS | 2023年 / 130卷 / 22期

关键词：

PAIR PRODUCTION; SPIN CORRELATIONS; INFORMATION; COLLISIONS; DECAY;

D O I：

10.1103/PhysRevLett.130.221801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Top quarks have been recently shown to be a promising system to study quantum information at the highest-energy scale available. The current lines of research mostly discuss topics such as entanglement, Bell nonlocality or quantum tomography. Here, we provide the full picture of quantum correlations in top quarks by studying also quantum discord and steering. We find that both phenomena are present at the LHC. In particular, quantum discord in a separable quantum state is expected to be detected with high -statistical significance. Interestingly, due to the singular nature of the measurement process, quantum discord can be measured following its original definition, and the steering ellipsoid can be experimentally reconstructed, both highly demanding measurements in conventional setups. In contrast to entanglement, the asymmetric nature of quantum discord and steering can provide witnesses of CP-violating physics beyond the standard model.

引用

页数：6

共 79 条

[1]

Aaboud M, 2020, EUR PHYS J C, V80, DOI 10.1140/epjc/s10052-020-8181-6

[2] Measurement of Spin Correlation in Top-Antitop Quark Events and Search for Top Squark Pair Production in pp Collisions at √s=8 TeV Using the ATLAS Detector [J].

Aad, G. ;

Abbott, B. ;

Abdallah, J. ;

Khalek, S. Abdel ;

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. ;

Ahmadov, F. ;

Aielli, G. ;

Akerstedt, H. ;

Akesson, T. P. A. ;

Akimoto, G. ;

Akimov, A. V. ;

Alberghi, G. L. ;

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. ;

Aloisio, A. ;

Alonso, A. ;

Alonso, F. ;

Alpigiani, C. .

PHYSICAL REVIEW LETTERS, 2015, 114 (14)

[3] Observation of Spin Correlation in t(t)over-bar Events from pp Collisions at √s=7 TeV Using the ATLAS Detector [J].

Aad, G. ;

Abbott, B. ;

Abdallah, J. ;

Khalek, S. Abdel ;

Abdelalim, A. A. ;

Abdesselam, A. ;

Abdinov, O. ;

Abi, B. ;

Abolins, M. ;

AbouZeid, O. S. ;

Abramowicz, H. ;

Abreu, H. ;

Acerbi, E. ;

Acharya, B. S. ;

Adamczyk, L. ;

Adams, D. L. ;

Addy, T. N. ;

Adelman, J. ;

Aderholz, M. ;

Adomeit, S. ;

Adragna, P. ;

Adye, T. ;

Aefsky, S. ;

Aguilar-Saavedra, J. A. ;

Aharrouche, M. ;

Ahlen, S. P. ;

Ahles, F. ;

Ahmad, A. ;

Ahsan, M. ;

Aielli, G. ;

Akdogan, T. ;

Akesson, T. P. A. ;

Akimoto, G. ;

Akimov, A. V. ;

Akiyama, A. ;

Alam, M. S. ;

Alam, M. A. ;

Albert, J. ;

Albrand, S. ;

Aleksa, M. ;

Aleksandrov, I. N. ;

Alessandria, F. ;

Alexa, C. ;

Alexander, G. ;

Alexandre, G. ;

Alexopoulos, T. ;

Alhroob, M. ;

Aliev, M. ;

Alimonti, G. ;

Alison, J. .

PHYSICAL REVIEW LETTERS, 2012, 108 (21)

[4] Measurement of t(t)over-cap spin correlation in p(p)over-cap collisions using the CDF II detector at the Tevatron [J].

Aaltonen, T. ;

Alvarez Gonzalez, B. ;

Amerio, S. ;

Amidei, D. ;

Anastassov, A. ;

Annovi, A. ;

Antos, J. ;

Apollinari, G. ;

Appel, J. A. ;

Apresyan, A. ;

Arisawa, T. ;

Artikov, A. ;

Asaadi, J. ;

Ashmanskas, W. ;

Auerbach, B. ;

Aurisano, A. ;

Azfar, F. ;

Badgett, W. ;

Barbaro-Galtieri, A. ;

Barnes, V. E. ;

Barnett, B. A. ;

Barria, P. ;

Bartos, P. ;

Bauce, M. ;

Bauer, G. ;

Bedeschi, F. ;

Beecher, D. ;

Behari, S. ;

Bellettini, G. ;

Bellinger, J. ;

Benjamin, D. ;

Beretvas, A. ;

Bhatti, A. ;

Binkley, M. ;

Bisello, D. ;

Bizjak, I. ;

Bland, K. R. ;

Blumenfeld, B. ;

Bocci, A. ;

Bodek, A. ;

Bortoletto, D. ;

Boudreau, J. ;

Boveia, A. ;

Brau, B. ;

Brigliadori, L. ;

Brisuda, A. ;

Bromberg, C. ;

Brucken, E. ;

Bucciantonio, M. ;

Budagov, J. .

PHYSICAL REVIEW D, 2011, 83 (03)

[5] Measurement of spin correlation between top and antitop quarks produced in p(p)over-bar collisions at √s=1.96 TeV [J].

Abazov, V. M. ;

Abbott, B. ;

Acharya, B. S. ;

Adams, M. ;

Adams, T. ;

Agnew, J. P. ;

Alexeev, G. D. ;

Alkhazov, G. ;

Alton, A. ;

Askew, A. ;

Atkins, S. ;

Augsten, K. ;

Aushev, V. ;

Aushev, Y. ;

Avila, C. ;

Badaud, F. ;

Bagby, L. ;

Baldin, B. ;

Bandurin, D. V. ;

Banerjee, S. ;

Barberis, E. ;

Baringer, P. ;

Bartlett, J. F. ;

Bassler, U. ;

Bazterra, V. ;

Bean, A. ;

Begalli, M. ;

Bellantoni, L. ;

Beri, S. B. ;

Bernardi, G. ;

Bernhard, R. ;

Bertram, I. ;

Besancon, M. ;

Beuselinck, R. ;

Bhat, P. C. ;

Bhatia, S. ;

Bhatnagar, V. ;

Blazey, G. ;

Blessing, S. ;

Bloom, K. ;

Boehnlein, A. ;

Boline, D. ;

Boos, E. E. ;

Borissov, G. ;

Borysova, M. ;

Brandt, A. ;

Brandt, O. ;

Brock, R. ;

Bross, A. ;

Brown, D. .

PHYSICS LETTERS B, 2016, 757 :199-206

[6] Measurement of Spin Correlation in t(t)over-bar Production Using a Matrix Element Approach [J].

Abazov, V. M. ;

Abbott, B. ;

Acharya, B. S. ;

Adams, M. ;

Adams, T. ;

Alexeev, G. D. ;

Alkhazov, G. ;

Alton, A. ;

Alverson, G. ;

Alves, G. A. ;

Ancu, L. S. ;

Aoki, M. ;

Arov, M. ;

Askew, A. ;

Asman, B. ;

Atramentov, O. ;

Avila, C. ;

BackusMayes, J. ;

Badaud, F. ;

Bagby, L. ;

Baldin, B. ;

Bandurin, D. V. ;

Banerjee, S. ;

Barberis, E. ;

Baringer, P. ;

Barreto, J. ;

Bartlett, J. F. ;

Bassler, U. ;

Bazterra, V. ;

Beale, S. ;

Bean, A. ;

Begalli, M. ;

Begel, M. ;

Belanger-Champagne, C. ;

Bellantoni, L. ;

Beri, S. B. ;

Bernardi, G. ;

Bernhard, R. ;

Bertram, I. ;

Besancon, M. ;

Beuselinck, R. ;

Bezzubov, V. A. ;

Bhat, P. C. ;

Bhatnagar, V. ;

Blazey, G. ;

Blessing, S. ;

Bloom, K. ;

Boehnlein, A. ;

Boline, D. ;

Boos, E. E. .

PHYSICAL REVIEW LETTERS, 2011, 107 (03)

[7] Experimental Entanglement Activation from Discord in a Programmable Quantum Measurement [J].

Adesso, Gerardo ;

D'Ambrosio, Vincenzo ;

Nagali, Eleonora ;

Piani, Marco ;

Sciarrino, Fabio .

PHYSICAL REVIEW LETTERS, 2014, 112 (14)

[8] Quantum information with top quarks in QCD [J].

Afik, Yoav ;

Nova, Juan Ramon Munoz de .

QUANTUM, 2022, 6

[9] Entanglement and quantum tomography with top quarks at the LHC [J].

Afik, Yoav ;

Munoz de Nova, Juan Ramon .

EUROPEAN PHYSICAL JOURNAL PLUS, 2021, 136 (09)

[10] Laboratory-frame tests of quantum entanglement in H → WW [J].

Aguilar-Saavedra, J. A. .

PHYSICAL REVIEW D, 2023, 107 (07)

← 1 2 3 4 5 6 7 8 →