- Main
Measurement of the top quark mass in the tt¯→dilepton channel from √s=8 TeV ATLAS data
- Author(s): Aaboud, M
- Aad, G
- Abbott, B
- Abdallah, J
- Abdinov, O
- Abeloos, B
- Aben, R
- AbouZeid, OS
- Abraham, NL
- Abramowicz, H
- Abreu, H
- Abreu, R
- Abulaiti, Y
- Acharya, BS
- Adamczyk, L
- Adams, DL
- Adelman, J
- Adomeit, S
- Adye, T
- Affolder, AA
- Agatonovic-Jovin, T
- Agricola, J
- Aguilar-Saavedra, JA
- Ahlen, SP
- Ahmadov, F
- Aielli, G
- Akerstedt, H
- Åkesson, TPA
- Akimov, AV
- Alberghi, GL
- Albert, J
- Albrand, S
- Alconada Verzini, MJ
- Aleksa, M
- Aleksandrov, IN
- Alexa, C
- Alexander, G
- Alexopoulos, T
- Alhroob, M
- Ali, B
- Aliev, M
- Alimonti, G
- Alison, J
- Alkire, SP
- Allbrooke, BMM
- Allen, BW
- Allport, PP
- Aloisio, A
- Alonso, A
- Alonso, F
- Alpigiani, C
- Alstaty, M
- Alvarez Gonzalez, B
- Álvarez Piqueras, D
- Alviggi, MG
- Amadio, BT
- Amako, K
- Amaral Coutinho, Y
- Amelung, C
- Amidei, D
- Amor Dos Santos, SP
- Amorim, A
- Amoroso, S
- Amundsen, G
- Anastopoulos, C
- Ancu, LS
- Andari, N
- Andeen, T
- Anders, CF
- Anders, G
- Anders, JK
- Anderson, KJ
- Andreazza, A
- Andrei, V
- Angelidakis, S
- Angelozzi, I
- Anger, P
- Angerami, A
- Anghinolfi, F
- Anisenkov, AV
- Anjos, N
- Annovi, A
- Antel, C
- Antonelli, M
- Antonov, A
- Anulli, F
- Aoki, M
- Aperio Bella, L
- Arabidze, G
- Arai, Y
- Araque, JP
- Arce, ATH
- Arduh, FA
- Arguin, JF
- Argyropoulos, S
- Arik, M
- Armbruster, AJ
- Armitage, LJ
- Arnaez, O
- Arnold, H
- et al.
Abstract
The top quark mass is measured in the tt¯→dilepton channel (lepton=e,μ) using ATLAS data recorded in the year 2012 at the LHC. The data were taken at a proton–proton centre-of-mass energy of s=8 TeV and correspond to an integrated luminosity of about 20.2 fb . Exploiting the template method, and using the distribution of invariant masses of lepton–b-jet pairs, the top quark mass is measured to be m =172.99±0.41 (stat)±0.74 (syst) GeV, with a total uncertainty of 0.84 GeV. Finally, a combination with previous ATLAS m measurements from s=7 TeV data in the tt¯→dilepton and tt¯→lepton+jets channels results in m =172.84±0.34 (stat)±0.61 (syst) GeV, with a total uncertainty of 0.70 GeV. −1 top top top
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