Measurement of differential cross sections for single diffractive dissociation in root s=8 TeV pp collisions using the ATLAS ALFA spectrometer

Articolo

Data di Pubblicazione:

2020

Citazione:

Measurement of differential cross sections for single diffractive dissociation in root s=8 TeV pp collisions using the ATLAS ALFA spectrometer / G. Aad, B. Abbott, D.C. Abbott, O. Abdinov, A. Abed Abud, K. Abeling, D.K. Abhayasinghe, S.H. Abidi, O.S. Abouzeid, N.L. Abraham, H. Abramowicz, H. Abreu, Y. Abulaiti, B.S. Acharya, B. Achkar, S. Adachi, L. Adam, C. Adam Bourdarios, L. Adamczyk, L. Adamek, J. Adelman, M. Adersberger, A. Adiguzel, S. Adorni, T. Adye, A.A. Affolder, Y. Afik, C. Agapopoulou, M.N. Agaras, A. Aggarwal, C. Agheorghiesei, J.A. Aguilar-Saavedra, F. Ahmadov, W.S. Ahmed, X. Ai, G. Aielli, S. Akatsuka, T.P.A. Akesson, E. Akilli, A.V. Akimov, K. Al Khoury, G.L. Alberghi, J. Albert, M.J. Alconada Verzini, S. Alderweireldt, M. Aleksa, I.N. Aleksandrov, C. Alexa, D. Alexandre, T. Alexopoulos, A. Alfonsi, M. Alhroob, B. Ali, G. Alimonti, J. Alison, S.P. Alkire, C. Allaire, B.M.M. Allbrooke, B.W. Allen, P.P. Allport, A. Aloisio, A. Alonso, F. Alonso, C. Alpigiani, A.A. Alshehri, M. Alvarez Estevez, D. Alvarez Piqueras, M.G. Alviggi, Y. Amaral Coutinho, A. Ambler, L. Ambroz, C. Amelung, D. Amidei, S.P. Amor Dos Santos, S. Amoroso, C.S. Amrouche, F. An, C. Anastopoulos, N. Andari, T. Andeen, C.F. Anders, J.K. Anders, A. Andreazza, V. Andrei, C.R. Anelli, S. Angelidakis, A. Angerami, A.V. Anisenkov, A. Annovi, C. Antel, M.T. Anthony, M. Antonelli, D.J.A. Antrim, F. Anulli, M. Aoki, J.A. Aparisi Pozo, L. Aperio Bella, G. Arabidze, J.P. Araque, V. Araujo Ferraz, R. Araujo Pereira, C. Arcangeletti, A.T.H. Arce, F.A. Arduh, J.-. Arguin, S. Argyropoulos, J.-. Arling, A.J. Armbruster, A. Armstrong, O. Arnaez, H. Arnold, A. Artamonov, G. Artoni, S. Artz, S. Asai, N. Asbah, E.M. Asimakopoulou, L. Asquith, K. Assamagan, R. Astalos, R.J. Atkin, M. Atkinson, N.B. Atlay, H. Atmani, K. Augsten, G. Avolio, R. Avramidou, M.K. Ayoub, A.M. Azoulay, G. Azuelos, M.J. Baca, H. Bachacou, K. Bachas, M. Backes, F. Backman, P. Bagnaia, M. Bahmani, H. Bahrasemani, A.J. Bailey, V.R. Bailey, J.T. Baines, M. Bajic, C. Bakalis, O.K. Baker, P.J. Bakker, D. Bakshi Gupta, S. Balaji, E.M. Baldin, P. Balek, F. Balli, W.K. Balunas, J. Balz, E. Banas, A. Bandyopadhyay, S. Banerjee, A.A.E. Bannoura, L. Barak, W.M. Barbe, E.L. Barberio, D. Barberis, M. Barbero, T. Barillari, M.-. Barisits, J. Barkeloo, T. Barklow, R. Barnea, 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 Guimaraes da Costa, S. Barsov, R. Bartoldus, G. Bartolini, A.E. Barton, P. Bartos, A. Basalaev, A. Bassalat, R.L. Bates, S.J. Batista, S. Batlamous, J.R. Batley, B. Batool, M. Battaglia, M. Bauce, F. Bauer, K.T. Bauer, H.S. Bawa, J.B. Beacham, T. Beau, P.H. Beauchemin, F. Becherer, P. Bechtle, H.C. Beck, H.P. Beck, K. Becker, M. Becker, C. Becot, A. Beddall, A.J. Beddall, V.A. Bednyakov, M. Bedognetti, C.P. Bee, T.A. Beermann, M. Begalli, M. Begel, A. Behera, J.K. Behr, F. Beisiegel, A.S. Bell, G. Bella, L. Bellagamba, A. Bellerive, P. Bellos, K. Beloborodov, K. Belotskiy, N.L. Belyaev, D. Benchekroun, N. Benekos, Y. Benhammou, D.P. Benjamin, M. Benoit, J.R. Bensinger, S. Bentvelsen, L. Beresford, M. Beretta, D. Berge, E. Bergeaas Kuutmann, N. Berger, B. Bergmann, L.J. Bergsten, J. Beringer, S. Berlendis, N.R. Bernard, G. Bernardi, C. Bernius, F.U. Bernlochner, T. Berry, P. Berta, C. Bertella, I.A. Bertram, G.J. Besjes, O. Bessidskaia Bylund, N. Besson, A. Bethani, S. Bethke, A. Betti, A.J. Bevan, J. Beyer, R. Bi, R.M. Bianchi, O. Biebel, D. Biedermann, R. Bielski, K. Bierwagen, N.V. Biesuz, M. Biglietti, T.R.V. Billoud, M. Bindi, A. Bingul, C. Bini, S. Biondi, M. Birman, T. Bisanz, J.P. Biswal, A. Bitadze, C. Bittrich, K. Bjorke, K.M. Black, T. Blazek, I. Bloch, C. Blocker, A. Blue, U. Blumenschein, G.J. Bobbink, V.S. Bobrovnikov, S.S. Bocchetta, A. Bocci, D. Boerner, D. Bogavac, A.G. Bogdanchikov, C. Bohm, V. Boisvert, P. Bokan, T. Bold, A.S. Boldyrev, A.E. Bolz, M. Bomben, M. Bona, J.S. Bon

Abstract:

A dedicated sample of Large Hadron Collider proton-proton collision data at centre-of-mass energy s= 8 TeV is used to study inclusive single diffractive dissociation, pp -> X p. The intact final-state proton is reconstructed in the ATLAS ALFA forward spectrometer, while charged particles from the dissociated system X are measured in the central detector components. The fiducial range of the measurement is -4.0 < log(10)xi < -1.6 and 0.016 < |t| < 0.43 GeV2, where xi is the proton fractional energy loss and t is the squared four-momentum transfer. The total cross section integrated across the fiducial range is 1.59 +/- 0.13 mb. Cross sections are also measured differentially as functions of xi, t, and increment eta, a variable that characterises the rapidity gap separating the proton and the system X . The data are consistent with an exponential t dependence, d sigma/dt proportional to e(Bt) with slope parameter B = 7.65 +/- 0.34 GeV-2. Interpreted in the framework of triple Regge phenomenology, the xi dependence leads to a pomeron intercept of alpha(0) = 1.07 +/- 0.09.

Tipologia IRIS:

01 - Articolo su periodico

Keywords:

Diffraction; Forward physics; Hadron-Hadron scattering (experiments); QCD

Elenco autori: