Precision measurement and interpretation of inclusive W+, W− and Z/γ∗ production cross sections with the ATLAS detector

Articolo

Data di Pubblicazione:

2017

Citazione:

Precision measurement and interpretation of inclusive W+, W− and Z/γ∗ production cross sections with the ATLAS detector / M. Aaboud, G. Aad, B. Abbott, J. Abdallah, O. Abdinov, B. Abeloos, O..S. Abouzeid, N..L. Abraham, H. Abramowicz, H. Abreu, R. Abreu, Y. Abulaiti, B..S. Acharya, S. Adachi, L. Adamczyk, D..L. Adams, J. Adelman, S. Adomeit, T. Adye, A..A. Affolder, T. Agatonovic-Jovin, J..A. Aguilar-Saavedra, S..P. Ahlen, F. Ahmadov, G. Aielli, H. Akerstedt, T..P..A. Åkesson, A..V. Akimov, G..L. Alberghi, J. Albert, S. Albrand, M..J. Alconada Verzini, M. Aleksa, I..N. Aleksandrov, C. Alexa, G. Alexander, T. Alexopoulos, M. Alhroob, B. Ali, M. Aliev, G. Alimonti, J. Alison, S..P. Alkire, B..M..M. Allbrooke, B..W. Allen, P..P. Allport, A. Aloisio, A. Alonso, F. Alonso, C. Alpigiani, A..A. Alshehri, M. Alstaty, B. Alvarez Gonzalez, D. Álvarez Piqueras, M..G. Alviggi, B..T. Amadio, Y. Amaral Coutinho, C. Amelung, D. Amidei, S..P. Amor Dos Santos, A. Amorim, S. Amoroso, G. Amundsen, C. Anastopoulos, L..S. Ancu, N. Andari, T. Andeen, C..F. Anders, J..K. Anders, K..J. Anderson, A. Andreazza, V. Andrei, S. Angelidakis, I. Angelozzi, A. Angerami, F. Anghinolfi, A..V. Anisenkov, N. Anjos, A. Annovi, C. Antel, M. Antonelli, A. Antonov, D..J. Antrim, F. Anulli, M. Aoki, L. Aperio Bella, G. Arabidze, Y. Arai, J..P. Araque, V. Araujo Ferraz, A..T..H. Arce, F..A. Arduh, J.-. Arguin, S. Argyropoulos, M. Arik, A..J. Armbruster, L..J. Armitage, O. Arnaez, H. Arnold, M. Arratia, O. Arslan, A. Artamonov, G. Artoni, S. Artz, S. Asai, N. Asbah, A. Ashkenazi, B. Åsman, L. Asquith, K. Assamagan, R. Astalos, M. Atkinson, N..B. Atlay, K. Augsten, G. Avolio, B. Axen, M..K. Ayoub, G. Azuelos, M..A. Baak, A..E. Baas, M..J. Baca, H. Bachacou, K. Bachas, M. Backes, M. Backhaus, P. Bagiacchi, P. Bagnaia, Y. Bai, J..T. Baines, M. Bajic, O..K. Baker, E..M. Baldin, P. Balek, T. Balestri, F. Balli, W..K. Balunas, E. Banas, S. Banerjee, A..A..E. Bannoura, L. Barak, E..L. Barberio, D. Barberis, M. Barbero, T. Barillari, M.-. Barisits, T. Barklow, N. Barlow, S..L. Barnes, B..M. Barnett, R..M. Barnett, Z. Barnovska-Blenessy, A. Baroncelli, G. Barone, A..J. Barr, L. Barranco Navarro, F. Barreiro, J. Barreiro Guimarães da Costa, R. Bartoldus, A..E. Barton, P. Bartos, A. Basalaev, A. Bassalat, R..L. Bates, S..J. Batista, J..R. Batley, M. Battaglia, M. Bauce, F. Bauer, H..S. Bawa, J..B. Beacham, M..D. Beattie, T. Beau, P..H. Beauchemin, P. Bechtle, H..P. Beck, K. Becker, M. Becker, M. Beckingham, C. Becot, A..J. Beddall, A. Beddall, V..A. Bednyakov, M. Bedognetti, C..P. Bee, L..J. Beemster, T..A. Beermann, M. Begel, J..K. Behr, A..S. Bell, G. Bella, L. Bellagamba, A. Bellerive, M. Bellomo, K. Belotskiy, O. Beltramello, N..L. Belyaev, O. Benary, D. Benchekroun, M. Bender, K. Bendtz, N. Benekos, Y. Benhammou, E. Benhar Noccioli, J. Benitez, D..P. Benjamin, J..R. Bensinger, S. Bentvelsen, L. Beresford, M. Beretta, D. Berge, E. Bergeaas Kuutmann, N. Berger, J. Beringer, S. Berlendis, N..R. Bernard, C. Bernius, F..U. Bernlochner, T. Berry, P. Berta, C. Bertella, G. Bertoli, F. Bertolucci, I..A. Bertram, C. Bertsche, D. Bertsche, G..J. Besjes, O. Bessidskaia Bylund, M. Bessner, N. Besson, C. Betancourt, A. Bethani, S. Bethke, A..J. Bevan, R..M. Bianchi, M. Bianco, O. Biebel, D. Biedermann, R. Bielski, N..V. Biesuz, M. Biglietti, J. Bilbao De Mendizabal, T..R..V. Billoud, H. Bilokon, M. Bindi, A. Bingul, C. Bini, S. Biondi, T. Bisanz, D..M. Bjergaard, C..W. Black, J..E. Black, K..M. Black, D. Blackburn, R..E. Blair, T. Blazek, I. Bloch, C. Blocker, A. Blue, W. Blum, U. Blumenschein, S. Blunier, G..J. Bobbink, V..S. Bobrovnikov, S..S. Bocchetta, A. Bocci, C. Bock, M. Boehler, D. Boerner, J..A. Bogaerts, D. Bogavac, A..G. Bogdanchikov, C. Bohm, V. Boisvert, P. Bokan, T. Bold, A..S. Boldyrev, M. Bomben, M. Bona, M. Boonekamp, A. Borisov, G. Borissov, J. Bortfeldt, D. Bortoletto, V. Bortolotto, K. Bos, D. Boscherini, M. Bosman, J.

Abstract:

High-precision measurements by the ATLAS Collaboration are presented of inclusive W+ → +ν, W− → −¯ ν and Z/γ∗ → ( = e,μ) Drell–Yan production cross sections at the LHC. The data were collected in proton–proton collisions at √s = 7TeV with an integrated luminosity of 4.6fb−1. Differential W+ and W− crosssectionsaremeasuredinaleptonpseudorapidityrange |η| < 2.5.Differential Z/γ∗ crosssectionsaremeasuredas a function of the absolute dilepton rapidity, for|y| < 3.6, for three intervals of dilepton mass, m, extending from 46 to 150 GeV. The integrated and differential electron- and muon-channel cross sections are combined and compared totheoreticalpredictionsusingrecentsetsofpartondistributionfunctions.Thedata,togetherwiththeﬁnalinclusivee±p scattering cross-section data from H1 and ZEUS, are interpreted in a next-to-next-to-leading-order QCD analysis, and anew set of parton distribution functions, ATLAS-epWZ16, is obtained. The ratio of strange-to-light sea-quark densities in the proton is determined more accurately than in previous determinationsbasedoncolliderdataonly, and isestablished tobeclosetounityinthesensitivityrangeofthedata. A new measurement of the CKM matrix element|Vcs|is also provided.

Tipologia IRIS:

01 - Articolo su periodico

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