Search for CP violation in tt¯ production and decay in proton-proton collisions at √s=8 TeV

V. Khachatryan; A. M. Sirunyan; A. Tumasyan; W. Adam; E. Asilar; T. Bergauer; J. Brandstetter; E. Brondolin; M. Dragicevic; J. Erö; M. Flechl; M. Friedl; R. Frühwirth; V. M. Ghete; C. Hartl; N. Hörmann; J. Hrubec; M. Jeitler; A. König; I. Krätschmer; D. Liko; T. Matsushita; I. Mikulec; D. Rabady; N. Rad; B. Rahbaran; H. Rohringer; J. Schieck; J. Strauss; W. Waltenberger; C. E. Wulz; O. Dvornikov; V. Makarenko; V. Zykunov; V. Mossolov; N. Shumeiko; J. Suarez Gonzalez; S. Alderweireldt; E. A. De Wolf; X. Janssen; J. Lauwers; M. Van De Klundert; H. Van Haevermaet; P. Van Mechelen; A. Evans; Z. Lesko; S. Nourbakhsh; N. Ruckstuhl; R. Rusack; N. Tambe; The CMS collaboration

doi:10.1007/JHEP03(2017)101

Search for CP violation in tt¯ production and decay in proton-proton collisions at √s=8 TeV

V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam, E. Asilar, T. Bergauer, J. Brandstetter, E. Brondolin, M. Dragicevic, J. Erö, M. Flechl, M. Friedl, R. Frühwirth, V. M. Ghete, C. Hartl, N. Hörmann, J. Hrubec, M. Jeitler, A. König, I. KrätschmerD. Liko, T. Matsushita, I. Mikulec, D. Rabady, N. Rad, B. Rahbaran, H. Rohringer, J. Schieck, J. Strauss, W. Waltenberger, C. E. Wulz, O. Dvornikov, V. Makarenko, V. Zykunov, V. Mossolov, N. Shumeiko, J. Suarez Gonzalez, S. Alderweireldt, E. A. De Wolf, X. Janssen, J. Lauwers, M. Van De Klundert, H. Van Haevermaet, P. Van Mechelen, A. Evans, Z. Lesko, S. Nourbakhsh, N. Ruckstuhl, R. Rusack, N. Tambe, The CMS collaboration

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The results of a first search for CP violation in the production and decay of top quark-antiquark (tt¯) pairs are presented. The search is based on asymmetries in T-odd, triple-product correlation observables, where T is the time-reversal operator. The analysis uses a sample of proton-proton collisions at s=8 TeV collected by the CMS experiment, corresponding to an integrated luminosity of 19.7 fb⁻¹. Events are selected having one electron or muon and at least four jets. The T-odd observables are measured using four-momentum vectors associated with tt¯ production and decay. The measured asymmetries exhibit no evidence for CP-violating effects, consistent with the expectation from the standard model.[Figure not available: see fulltext.]

Original language	English (US)
Article number	101
Journal	Journal of High Energy Physics
Volume	2017
Issue number	3
DOIs	https://doi.org/10.1007/JHEP03(2017)101
State	Published - Mar 1 2017

Bibliographical note

Publisher Copyright:
© 2017, The Author(s).

Keywords

CP violation
Hadron-Hadron scattering (experiments)
Top physics

Publisher link

10.1007/JHEP03(2017)101

Find It

Find It at U of M Libraries

Cite this

Khachatryan, V., Sirunyan, A. M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., Brandstetter, J., Brondolin, E., Dragicevic, M., Erö, J., Flechl, M., Friedl, M., Frühwirth, R., Ghete, V. M., Hartl, C., Hörmann, N., Hrubec, J., Jeitler, M., König, A., ... The CMS collaboration (2017). Search for CP violation in tt¯ production and decay in proton-proton collisions at √s=8 TeV. Journal of High Energy Physics, 2017(3), [101]. https://doi.org/10.1007/JHEP03(2017)101

Khachatryan, V, Sirunyan, AM, Tumasyan, A, Adam, W, Asilar, E, Bergauer, T, Brandstetter, J, Brondolin, E, Dragicevic, M, Erö, J, Flechl, M, Friedl, M, Frühwirth, R, Ghete, VM, Hartl, C, Hörmann, N, Hrubec, J, Jeitler, M, König, A, Krätschmer, I, Liko, D, Matsushita, T, Mikulec, I, Rabady, D, Rad, N, Rahbaran, B, Rohringer, H, Schieck, J, Strauss, J, Waltenberger, W, Wulz, CE, Dvornikov, O, Makarenko, V, Zykunov, V, Mossolov, V, Shumeiko, N, Suarez Gonzalez, J, Alderweireldt, S, De Wolf, EA, Janssen, X, Lauwers, J, Van De Klundert, M, Van Haevermaet, H, Van Mechelen, P, Evans, A, Lesko, Z, Nourbakhsh, S, Ruckstuhl, N, Rusack, R, Tambe, N & The CMS collaboration 2017, 'Search for CP violation in tt¯ production and decay in proton-proton collisions at √s=8 TeV', Journal of High Energy Physics, vol. 2017, no. 3, 101. https://doi.org/10.1007/JHEP03(2017)101

@article{958230b9cca8442a95ba83bd4c56b656,

title = "Search for CP violation in tt¯ production and decay in proton-proton collisions at √s=8 TeV",

abstract = "The results of a first search for CP violation in the production and decay of top quark-antiquark (tt¯) pairs are presented. The search is based on asymmetries in T-odd, triple-product correlation observables, where T is the time-reversal operator. The analysis uses a sample of proton-proton collisions at s=8 TeV collected by the CMS experiment, corresponding to an integrated luminosity of 19.7 fb−1. Events are selected having one electron or muon and at least four jets. The T-odd observables are measured using four-momentum vectors associated with tt¯ production and decay. The measured asymmetries exhibit no evidence for CP-violating effects, consistent with the expectation from the standard model.[Figure not available: see fulltext.]",

keywords = "CP violation, Hadron-Hadron scattering (experiments), Top physics",

author = "V. Khachatryan and Sirunyan, {A. M.} and A. Tumasyan and W. Adam and E. Asilar and T. Bergauer and J. Brandstetter and E. Brondolin and M. Dragicevic and J. Er{\"o} and M. Flechl and M. Friedl and R. Fr{\"u}hwirth and Ghete, {V. M.} and C. Hartl and N. H{\"o}rmann and J. Hrubec and M. Jeitler and A. K{\"o}nig and I. Kr{\"a}tschmer and D. Liko and T. Matsushita and I. Mikulec and D. Rabady and N. Rad and B. Rahbaran and H. Rohringer and J. Schieck and J. Strauss and W. Waltenberger and Wulz, {C. E.} and O. Dvornikov and V. Makarenko and V. Zykunov and V. Mossolov and N. Shumeiko and {Suarez Gonzalez}, J. and S. Alderweireldt and {De Wolf}, {E. A.} and X. Janssen and J. Lauwers and {Van De Klundert}, M. and {Van Haevermaet}, H. and {Van Mechelen}, P. and A. Evans and Z. Lesko and S. Nourbakhsh and N. Ruckstuhl and R. Rusack and N. Tambe and {The CMS collaboration}",

note = "Publisher Copyright: {\textcopyright} 2017, The Author(s).",

year = "2017",

month = mar,

day = "1",

doi = "10.1007/JHEP03(2017)101",

language = "English (US)",

volume = "2017",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "3",

}

TY - JOUR

T1 - Search for CP violation in tt¯ production and decay in proton-proton collisions at √s=8 TeV

AU - Khachatryan, V.

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Asilar, E.

AU - Bergauer, T.

AU - Brandstetter, J.

AU - Brondolin, E.

AU - Dragicevic, M.

AU - Erö, J.

AU - Flechl, M.

AU - Friedl, M.

AU - Frühwirth, R.

AU - Ghete, V. M.

AU - Hartl, C.

AU - Hörmann, N.

AU - Hrubec, J.

AU - Jeitler, M.

AU - König, A.

AU - Krätschmer, I.

AU - Liko, D.

AU - Matsushita, T.

AU - Mikulec, I.

AU - Rabady, D.

AU - Rad, N.

AU - Rahbaran, B.

AU - Rohringer, H.

AU - Schieck, J.

AU - Strauss, J.

AU - Waltenberger, W.

AU - Wulz, C. E.

AU - Dvornikov, O.

AU - Makarenko, V.

AU - Zykunov, V.

AU - Mossolov, V.

AU - Shumeiko, N.

AU - Suarez Gonzalez, J.

AU - Alderweireldt, S.

AU - De Wolf, E. A.

AU - Janssen, X.

AU - Lauwers, J.

AU - Van De Klundert, M.

AU - Van Haevermaet, H.

AU - Van Mechelen, P.

AU - Evans, A.

AU - Lesko, Z.

AU - Nourbakhsh, S.

AU - Ruckstuhl, N.

AU - Rusack, R.

AU - Tambe, N.

AU - The CMS collaboration

PY - 2017/3/1

Y1 - 2017/3/1

N2 - The results of a first search for CP violation in the production and decay of top quark-antiquark (tt¯) pairs are presented. The search is based on asymmetries in T-odd, triple-product correlation observables, where T is the time-reversal operator. The analysis uses a sample of proton-proton collisions at s=8 TeV collected by the CMS experiment, corresponding to an integrated luminosity of 19.7 fb−1. Events are selected having one electron or muon and at least four jets. The T-odd observables are measured using four-momentum vectors associated with tt¯ production and decay. The measured asymmetries exhibit no evidence for CP-violating effects, consistent with the expectation from the standard model.[Figure not available: see fulltext.]

AB - The results of a first search for CP violation in the production and decay of top quark-antiquark (tt¯) pairs are presented. The search is based on asymmetries in T-odd, triple-product correlation observables, where T is the time-reversal operator. The analysis uses a sample of proton-proton collisions at s=8 TeV collected by the CMS experiment, corresponding to an integrated luminosity of 19.7 fb−1. Events are selected having one electron or muon and at least four jets. The T-odd observables are measured using four-momentum vectors associated with tt¯ production and decay. The measured asymmetries exhibit no evidence for CP-violating effects, consistent with the expectation from the standard model.[Figure not available: see fulltext.]

KW - CP violation

KW - Hadron-Hadron scattering (experiments)

KW - Top physics

UR - http://www.scopus.com/inward/record.url?scp=85016311144&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85016311144&partnerID=8YFLogxK

U2 - 10.1007/JHEP03(2017)101

DO - 10.1007/JHEP03(2017)101

M3 - Article

AN - SCOPUS:85016311144

SN - 1126-6708

VL - 2017

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 3

M1 - 101

ER -

Search for CP violation in tt¯ production and decay in proton-proton collisions at √s=8 TeV

Abstract

Bibliographical note

Keywords

Publisher link

Find It

Other files and links

Fingerprint

Cite this