Search for the Higgs Boson Using Neural Networks in Events with Missing Energy and b-Quark Jets in pp̅ Collisions at √s=1.96 TeV

• Published in: Physical review letters 2010-04, Vol.104
• Main Authors: Aaltonen, T., Adelman, J., Alvarez Gonzalez, B., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., Apollinari, G., Apresyan, A., Arisawa, T., Artikov, A., Asaadi, J., Ashmanskas, W., Attal, A., Aurisano, A., Azfar, F., Badgett, W., Barbaro-Galtieri, A., Barnes, V.E., Barnett, B.A., Barria, P., Bartos, P., Bauer, G., Beauchemin, P.-H., Bedeschi, F., Beecher, D., Behari, S., Bellettini, G., Bellinger, J., Benjamin, D., Beretvas, A., Bhatti, A., Binkley, M., Bisello, D., Bizjak, I., Blair, R.E., Blocker, C., Blumenfeld, B., Bocci, A., Bodek, A., Boisvert, V., Bortoletto, D., Boudreau, J., Boveia, A., Brau, B., Bridgeman, A., Brigliadori, L., Bromberg, C., Brubaker, E., Budagov, J., Budd, H.S., Budd, S., Burkett, K., Busetto, G., Bussey, P., Buzatu, A., Byrum, K. L., Cabrera, S., Calancha, C., Camarda, S., Campanelli, M., Campbell, M., Canelli, F., Canepa, A., Carls, B., Carlsmith, D., Carosi, R., Carrillo, S., Carron, S., Casal, B., Casarsa, M., Castro, A., Catastini, P., Cauz, D., Cavaliere, V., Cavalli-Sforza, M., Cerri, A., Cerrito, L., Chang, S.H., Chen, Y.C., Chertok, M., Chiarelli, G., Chlachidze, G., Chlebana, F., Cho, K., Chokheli, D., Chou, J.P., Chung, K., Chung, W.H., Chung, Y.S., Chwalek, T., Ciobanu, C.I., Ciocci, M.A., Clark, A., Clark, D., Compostella, G., Convery, M.E., Conway, J., Cordelli, M.
• Format: Article
• Language: English
• Subjects: Astrophysics; High Energy Astrophysical Phenomena; High Energy Physics - Experiment; Physics; Sciences of the Universe
• ISSN: 0031-9007; 1079-7114
• DOI: 10.1103/PhysRevLett.104.141801

We report on a search for the standard model Higgs boson produced in association with a W or Z boson in pp¯ collisions at s=1.96TeV recorded by the CDF II experiment at the Tevatron in a data sample corresponding to an integrated luminosity of 2.1fb^-1. We consider events which have no identified charged leptons, an imbalance in transverse momentum, and two or three jets where at least one jet is consistent with originating from the decay of a b hadron. We find good agreement between data and background predictions. We place 95% confidence level upper limits on the production cross section for several Higgs boson masses ranging from 110GeV/c2 to 150GeV/c2. For a mass of 115GeV/c2 the observed (expected) limit is 6.9 (5.6) times the standard model prediction.