We have measured the W-boson mass MW using data corresponding to 2.2  fb-1 of integrated luminosity collected in pp̅ collisions at √s=1.96  TeV with the CDF II detector at the Fermilab Tevatron collider. Samples consisting of 470 126 W→eν candidates and 624 708 W→μν candidates yield the measurement MW=80 387±12stat.±15syst.=80 387±19  MeV/c2. This is the most precise measurement of the W-boson mass to date and significantly exceeds the precision of all previous measurements combined.
T. AALTONEN, B. ÁLVAREZ GONZÁLEZ, S. AMERIO, D. AMIDEI, A. ANASTASSOV, A. ANNOVI, et al. (2012). Precise Measurement of the W-Boson Mass with the CDF II Detector. PHYSICAL REVIEW LETTERS, 108, 151803-1-151803-8 [10.1103/PhysRevLett.108.151803].
Precise Measurement of the W-Boson Mass with the CDF II Detector
BRIGLIADORI, LUCA;CASTRO, ANDREA;DENINNO, MARIA MADDALENA;MAZZANTI, PAOLO;MOGGI, NICCOLO';MUSSINI, MANUEL;RIMONDI, FRANCO;ZUCCHELLI, STEFANO
2012
Abstract
We have measured the W-boson mass MW using data corresponding to 2.2 fb-1 of integrated luminosity collected in pp̅ collisions at √s=1.96 TeV with the CDF II detector at the Fermilab Tevatron collider. Samples consisting of 470 126 W→eν candidates and 624 708 W→μν candidates yield the measurement MW=80 387±12stat.±15syst.=80 387±19 MeV/c2. This is the most precise measurement of the W-boson mass to date and significantly exceeds the precision of all previous measurements combined.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
