@article{8021fd31ea0d4a0bad9cbf301e4361b9,
title = "Cross section and parity-violating spin asymmetries of W± boson production in polarized p+p collisions at √s=500GeV",
abstract = "Large parity-violating longitudinal single-spin asymmetries ALe +=-0.86-0.14+0.30 and ALe-=0.88-0.71+0.12 are observed for inclusive high transverse momentum electrons and positrons in polarized p+p collisions at a center-of-mass energy of √s=500GeV with the PHENIX detector at RHIC. These e± come mainly from the decay of W± and Z0 bosons, and their asymmetries directly demonstrate parity violation in the couplings of the W± to the light quarks. The observed electron and positron yields were used to estimate W ± boson production cross sections for the e± channels of σ(pp→W+X)×BR(W+→e +νe)=144.1±21.2(stat)-10.3+3.4(syst)±21. 6(norm)pb, and σ(pp→W-X)×BR(W -→e-{\=ν}e)=31.7±12.1(stat)-8. 2+10.1(syst)±4.8(norm)pb.",
author = "A. Adare and S. Afanasiev and C. Aidala and Ajitanand, {N. N.} and Y. Akiba and R. Akimoto and J. Alexander and H. Al-Ta'ani and Andrews, {K. R.} and A. Angerami and K. Aoki and N. Apadula and E. Appelt and Y. Aramaki and R. Armendariz and Aschenauer, {E. C.} and Awes, {T. C.} and B. Azmoun and V. Babintsev and Dubey, {Awadhesh Kumar} and Mihael Makek and Alexander Milov and Deepali Sharma and Itzhak Tserruya and M. Bai and B. Bannier and Barish, {K. N.} and B. Bassalleck and Basye, {A. T.} and S. Bathe and V. Baublis and C. Baumann and A. Bazilevsky and R. Belmont and J. Ben-Benjamin and R. Bennett and A. Berdnikov and Y. Berdnikov and Blau, {D. S.} and Bok, {J. S.} and K. Boyle and Brooks, {M. L.} and D. Broxmeyer and H. Buesching and V. Bumazhnov and G. Bunce and S. Butsyk and S. Campbell and A. Caringi and P. Castera and Chen, {C. H.} and Chi, {C. Y.} and M. Chiu and Choi, {I. J.} and Z. Citron",
note = "Office of Nuclear Physics in DOE Office of Science; NSF (USA); MEXT (Japan); JSPS (Japan); CNPq (Brazil); FAPESP (Brazil); NSFC (China); MSMT (Czech Republic); IN2P3/CNRS (France); CEA (France); BMBF (Germany); DAAD (Germany); AvH (Germany); OTKA (Hungary); DAE (India); DST (India); ISF (Israel); NRF (Korea); WCU (Korea); MES (Russia); RAS (Russia); FAAE (Russia); VR (Sweden); KAW (Sweden); U.S. CRDF for the FSU; Hungary-U.S. HAESF; U.S.-Israel BSFWe thank the Collider-Accelerator Department for developing the unique technologies enabling these measurements and the Physics Department staff at BNL for vital contributions. We also thank D. de Florian, B. Surrow, and J. Balewski for helpful discussions. We acknowledge support from the Office of Nuclear Physics in DOE Office of Science and NSF (USA), MEXT and JSPS (Japan), CNPq and FAPESP (Brazil), NSFC (China), MSMT (Czech Republic), IN2P3/CNRS and CEA (France), BMBF, DAAD, and AvH (Germany), OTKA (Hungary), DAE and DST (India), ISF (Israel), NRF and WCU (Korea), MES, RAS, and FAAE (Russia), VR and KAW (Sweden), U.S. CRDF for the FSU, Hungary-U.S. HAESF, and U.S.-Israel BSF.",
year = "2011",
month = feb,
day = "11",
doi = "https://doi.org/10.1103/PhysRevLett.106.062001",
language = "الإنجليزيّة",
volume = "106",
number = "6",
}