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4,432 results on '"Berzano"'

1. The ALICE Analysis Framework for LHC Run 3

Author: Berzano Dario, Deckers Roel, Grigoras¸ Costin, Floris Michele, Hristov Peter, Krzewicki Mikolaj, and Zimmermann Markus
Subjects: Physics, QC1-999
Abstract: The ALICE experimentatthe LHC (CERN)iscurrently developinganew software framework designed for Run3: detector and software will havetocope with Pb–Pb collision rates 100 times higher than today, leadingtothe combinationofcore Online-Offline operations intoasingle framework called O2. The analysis code is expectedtorunonafew large Analysis Facilities counting 20k cores and sustaining a 100 GB/s throughput: this requiresaconjoint effort between the definitionofthe data format, the configurationofthe Analysis Facilities and the developmentofthe Analysis Framework. Wepresent the prototypeofanew Analysis Object Data format basedontimeframes and optimized for continuous readout. Such formatisdesigned tobeextensible and transported efficiently over the network. Wealso present the first iterationofthe Analysis Framework, basedonthe O2 Data Processing Layer and leveraging message passing acrossatopologyofprocesses. Wewill also illustrate the implementation and benchmarkingofacompatibility layer designedtomitigate the transition from the current event-oriented analysis modeltothe new time-oriented one. Finally,wewill giveastatus reportonthe integrationofthe Analysis Framework and Analysis Facilities for Run3into the current organized analysis model in ALICE.
Published: 2019
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2. Software training for the next generation of physicists: joint experience of LHCb and ALICE

Author: Berzano Dario, Burr Chris, Beck Hans, Bellée Violaine, Bertens Redmer Alexander, and Navarro Albert Puig
Subjects: Physics, QC1-999
Abstract: The need for good software training is essential in the HEP community. Unfortunately, current training is non-homogeneous and the definition of a common baseline is unclear, making it difficult for newcomers to proficiently join large collaborations such as ALICE or LHCb. In the last years, both collaborations have started separate efforts to tackle this issue through training workshops, via Analysis Tutorials (organized by the ALICE Juniors since 2014) and the Starterkit (organized by LHCb students since 2015). In 2017, ALICE and LHCb have for the first time joined efforts to provide combined training by identifying common topics, such as version control systems (Git) and programming languages (e.g. Python). Given the positive experience and feedback, this collaboration will be repeated in the future. We will illustrate the teaching methods, experience and feedback from our first common training workshop. We will also discuss our efforts to extend our format to other HEP experiments for future iterations.
Published: 2019
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3. A Technocity Utopia

Author: Berzano, Luigi, Lewis, James R., Series Editor, Bogdan, Henrik, Series Editor, Palmisano, Stefania, editor, and Pannofino, Nicola, editor
Published: 2023
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4. Production of muons from heavy-flavour hadron decays at high transverse momentum in Pb–Pb collisions at s NN = 5.02 and 2.76 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Molina, R Alfaro, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Banerjee, D, Barbera, R, Barioglio, L, Barlou, M, Barnaföldi, GG, Barnby, LS, Barret, V, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Alba, JL Bazo, Bearden, IG, Beattie, C, Belikov, I, Hechavarria, ADC Bell, Bellini, F, Bellwied, R, Belokurova, S, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berdnikova, A, Berenyi, D, Berzano, D, Besoiu, MG, Betev, L, Bhaduri, PP, Bhasin, A, Bhat, IR, Bhat, MA, Bhattacharjee, B, Bhattacharya, P, Bianchi, A, Bianchi, L, Bianchi, N, and Bielčík, J
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Mathematical Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics, Mathematical sciences, Physical sciences
Abstract: Measurements of the production of muons from heavy-flavour hadron decays in Pb–Pb collisions at sNN=5.02 and 2.76 TeV using the ALICE detector at the LHC are reported. The nuclear modification factor RAA at sNN=5.02 TeV is measured at forward rapidity (2.57 GeV/c). The RAA shows an increase of the suppression of the yields of muons from heavy-flavour hadron decays with increasing centrality. A suppression by a factor of about three is observed in the 10% most central collisions. The RAA at sNN=5.02 TeV is similar to that at sNN=2.76 TeV. The precise RAA measurements have the potential to distinguish between model predictions implementing different mechanisms of parton energy loss in the high-density medium formed in heavy-ion collisions. They place important constraints for the understanding of the heavy-quark interaction with the hot and dense QCD medium.
Published: 2021

5. Pseudorapidity distributions of charged particles as a function of mid- and forward rapidity multiplicities in pp collisions at s = 5.02, 7 and 13 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Agha, S, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Banerjee, D, Barbera, R, Barioglio, L, Barlou, M, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belokurova, S, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berdnikova, A, Berenyi, D, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhattacharjee, B, Bianchi, A, and Bianchi, L
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Astronomical sciences, Atomic, molecular and optical physics, Particle and high energy physics
Abstract: The multiplicity dependence of the pseudorapidity density of charged particles in proton–proton (pp) collisions at centre-of-mass energies s=5.02, 7 and 13 TeV measured by ALICE is reported. The analysis relies on track segments measured in the midrapidity range (| η| < 1.5). Results are presented for inelastic events having at least one charged particle produced in the pseudorapidity interval | η| < 1. The multiplicity dependence of the pseudorapidity density of charged particles is measured with mid- and forward rapidity multiplicity estimators, the latter being less affected by autocorrelations. A detailed comparison with predictions from the PYTHIA 8 and EPOS LHC event generators is also presented. The results can be used to constrain models for particle production as a function of multiplicity in pp collisions.
Published: 2021

6. Pseudorapidity distributions of charged particles as a function of mid- and forward rapidity multiplicities in pp collisions at √s = 5.02, 7 and 13 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Agha, S, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Banerjee, D, Barbera, R, Barioglio, L, Barlou, M, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belokurova, S, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berdnikova, A, Berenyi, D, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhattacharjee, B, Bianchi, A, and Bianchi, L
Subjects: Nuclear & Particles Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics
Abstract: The multiplicity dependence of the pseudorapidity density of charged particles in proton–proton (pp) collisions at centre-of-mass energies s=5.02, 7 and 13 TeV measured by ALICE is reported. The analysis relies on track segments measured in the midrapidity range (| η| < 1.5). Results are presented for inelastic events having at least one charged particle produced in the pseudorapidity interval | η| < 1. The multiplicity dependence of the pseudorapidity density of charged particles is measured with mid- and forward rapidity multiplicity estimators, the latter being less affected by autocorrelations. A detailed comparison with predictions from the PYTHIA 8 and EPOS LHC event generators is also presented. The results can be used to constrain models for particle production as a function of multiplicity in pp collisions.
Published: 2021

7. ΛK femtoscopy in Pb-Pb collisions at sNN=2.76 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Molina, R Alfaro, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Alba, JL Bazo, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Hechavarria, ADC Bell, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, and Bhattacharjee, B
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Nuclear and plasma physics
Abstract: The first measurements of the scattering parameters of ΛK pairs in all three charge combinations (ΛK+, ΛK-, and ΛKS0) are presented. The results are achieved through a femtoscopic analysis of ΛK correlations in Pb-Pb collisions at sNN=2.76 TeV recorded by ALICE at the Large Hadron Collider. The femtoscopic correlations result from strong final-state interactions and are fit with a parametrization allowing for both the characterization of the pair emission source and the measurement of the scattering parameters for the particle pairs. Extensive studies with the THERMINATOR 2 event generator provide a good description of the nonfemtoscopic background, which results mainly from collective effects, with unprecedented precision. Furthermore, together with HIJING simulations, this model is used to account for contributions from residual correlations induced by feed-down from particle decays. The extracted scattering parameters indicate that the strong force is repulsive in the ΛK+ interaction and attractive in the ΛK- interaction. The data hint that the ΛKS0 interaction is attractive; however, the uncertainty of the result does not permit such a decisive conclusion. The results suggest an effect arising either from different quark-antiquark interactions between the pairs (ss¯ in ΛK+ and uū in ΛK-) or from different net strangeness for each system (S=0 for ΛK+, and S=-2 for ΛK-). Finally, the ΛK systems exhibit source radii larger than expected from extrapolation from identical particle femtoscopic studies. This effect is interpreted as resulting from the separation in space-time of the single-particle Λ and K source distributions.
Published: 2021

8. Λk femtoscopy in Pb-Pb collisions at sNN =2.76 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, and Bhattacharjee, B
Abstract: The first measurements of the scattering parameters of ΛK pairs in all three charge combinations (ΛK+, ΛK-, and ΛKS0) are presented. The results are achieved through a femtoscopic analysis of ΛK correlations in Pb-Pb collisions at sNN=2.76 TeV recorded by ALICE at the Large Hadron Collider. The femtoscopic correlations result from strong final-state interactions and are fit with a parametrization allowing for both the characterization of the pair emission source and the measurement of the scattering parameters for the particle pairs. Extensive studies with the THERMINATOR 2 event generator provide a good description of the nonfemtoscopic background, which results mainly from collective effects, with unprecedented precision. Furthermore, together with HIJING simulations, this model is used to account for contributions from residual correlations induced by feed-down from particle decays. The extracted scattering parameters indicate that the strong force is repulsive in the ΛK+ interaction and attractive in the ΛK- interaction. The data hint that the ΛKS0 interaction is attractive; however, the uncertainty of the result does not permit such a decisive conclusion. The results suggest an effect arising either from different quark-antiquark interactions between the pairs (ss¯ in ΛK+ and uū in ΛK-) or from different net strangeness for each system (S=0 for ΛK+, and S=-2 for ΛK-). Finally, the ΛK systems exhibit source radii larger than expected from extrapolation from identical particle femtoscopic studies. This effect is interpreted as resulting from the separation in space-time of the single-particle Λ and K source distributions.
Published: 2021

9. Elliptic Flow of Electrons from Beauty-Hadron Decays in Pb-Pb Collisions at sNN=5.02 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Molina, R Alfaro, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Alba, JL Bazo, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Hechavarria, ADC Bell, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, and Bhatt, H
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, ALICE Collaboration, Mathematical Sciences, Engineering, General Physics, Mathematical sciences, Physical sciences
Abstract: The elliptic flow of electrons from beauty hadron decays at midrapidity (|y|
Published: 2021

10. First measurement of quarkonium polarization in nuclear collisions at the LHC

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, and Bhatt, H
Subjects: Mathematical Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics
Abstract: The polarization of inclusive J/ψ and ϒ(1S) produced in Pb–Pb collisions at sNN=5.02 TeV at the LHC is measured with the ALICE detector. The study is carried out by reconstructing the quarkonium through its decay to muon pairs in the rapidity region 2.5
Published: 2021

11. Production of light-flavor hadrons in pp collisions at s=7ands=13TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Molina, R Alfaro, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Alba, JL Bazo, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Hechavarria, ADC Bell, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, Bhattacharjee, B, and Bianchi, A
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Astronomical sciences, Atomic, molecular and optical physics, Particle and high energy physics
Abstract: The production of π±, K ±, KS0, K ∗(892) , p , ϕ(1020) , Λ , Ξ -, Ω -, and their antiparticles was measured in inelastic proton–proton (pp) collisions at a center-of-mass energy of s = 13 TeV at midrapidity (| y| < 0.5) as a function of transverse momentum (pT) using the ALICE detector at the CERN LHC. Furthermore, the single-particle pT distributions of KS0, Λ , and Λ ¯ in inelastic pp collisions at s=7 TeV are reported here for the first time. The pT distributions are studied at midrapidity within the transverse momentum range 0 ≤ pT≤ 20 GeV/c, depending on the particle species. The pT spectra, integrated yields, and particle yield ratios are discussed as a function of collision energy and compared with measurements at lower s and with results from various general-purpose QCD-inspired Monte Carlo models. A hardening of the spectra at high pT with increasing collision energy is observed, which is similar for all particle species under study. The transverse mass and xT≡2pT/s scaling properties of hadron production are also studied. As the collision energy increases from s = 7–13 TeV, the yields of non- and single-strange hadrons normalized to the pion yields remain approximately constant as a function of s, while ratios for multi-strange hadrons indicate enhancements. The pT-differential cross sections of π±, K ± and p (p ¯) are compared with next-to-leading order perturbative QCD calculations, which are found to overestimate the cross sections for π± and p (p ¯) at high pT.
Published: 2021

12. Production of light-flavor hadrons in pp collisions at √s=7and√s=13TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Rinella, GA, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Molina, RA, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Alba, JLB, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Hechavarria, ADCB, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, Bhattacharjee, B, and Bianchi, A
Subjects: Nuclear & Particles Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics
Abstract: The production of π±, K ±, KS0, K ∗(892) , p , ϕ(1020) , Λ , Ξ -, Ω -, and their antiparticles was measured in inelastic proton–proton (pp) collisions at a center-of-mass energy of s = 13 TeV at midrapidity (| y| < 0.5) as a function of transverse momentum (pT) using the ALICE detector at the CERN LHC. Furthermore, the single-particle pT distributions of KS0, Λ , and Λ ¯ in inelastic pp collisions at s=7 TeV are reported here for the first time. The pT distributions are studied at midrapidity within the transverse momentum range 0 ≤ pT≤ 20 GeV/c, depending on the particle species. The pT spectra, integrated yields, and particle yield ratios are discussed as a function of collision energy and compared with measurements at lower s and with results from various general-purpose QCD-inspired Monte Carlo models. A hardening of the spectra at high pT with increasing collision energy is observed, which is similar for all particle species under study. The transverse mass and xT≡2pT/s scaling properties of hadron production are also studied. As the collision energy increases from s = 7–13 TeV, the yields of non- and single-strange hadrons normalized to the pion yields remain approximately constant as a function of s, while ratios for multi-strange hadrons indicate enhancements. The pT-differential cross sections of π±, K ± and p (p ¯) are compared with next-to-leading order perturbative QCD calculations, which are found to overestimate the cross sections for π± and p (p ¯) at high pT.
Published: 2021

13. Transverse-momentum and event-shape dependence of D-meson flow harmonics in Pb–Pb collisions at sNN=5.02TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, and Bhatt, H
Subjects: Nuclear & Particles Physics, Mathematical Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: The elliptic and triangular flow coefficients v2 and v3 of prompt D0, D+, and D⁎+ mesons were measured at midrapidity (|y|
Published: 2021

14. Pion–kaon femtoscopy and the lifetime of the hadronic phase in Pb−Pb collisions at sNN=2.76 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Agha, S, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Bedda, C, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, and Bhattacharjee, B
Subjects: Nuclear & Particles Physics, Mathematical Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: In this paper, the first femtoscopic analysis of pion–kaon correlations at the LHC is reported. The analysis was performed on the Pb–Pb collision data at sNN=2.76 TeV recorded with the ALICE detector. The non-identical particle correlations probe the spatio-temporal separation between sources of different particle species as well as the average source size of the emitting system. The sizes of the pion and kaon sources increase with centrality, and pions are emitted closer to the centre of the system and/or later than kaons. This is naturally expected in a system with strong radial flow and is qualitatively reproduced by hydrodynamic models. ALICE data on pion–kaon emission asymmetry are consistent with (3+1)-dimensional viscous hydrodynamics coupled to a statistical hadronisation model, resonance propagation, and decay code THERMINATOR 2 calculation, with an additional time delay between 1 and 2 fm/c for kaons. The delay can be interpreted as evidence for a significant hadronic rescattering phase in heavy-ion collisions at the LHC.
Published: 2021

15. Centrality dependence of J/ψ and ψ(2S) production and nuclear modification in p-Pb collisions at sNN = 8.16 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Agha, S, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Bedda, C, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berdnikova, A, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, and Bhatt, H
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Hadron-Hadron scattering, Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Nuclear and plasma physics, Particle and high energy physics
Abstract: The inclusive production of the J/ψ and ψ(2S) charmonium states is studied as a function of centrality in p-Pb collisions at a centre-of-mass energy per nucleon pair sNN = 8.16 TeV at the LHC. The measurement is performed in the dimuon decay channel with the ALICE apparatus in the centre-of-mass rapidity intervals −4.46 < ycms< −2.96 (Pb-going direction) and 2.03 < ycms< 3.53 (p-going direction), down to zero transverse momentum (pT). The J/ψ and ψ(2S) production cross sections are evaluated as a function of the collision centrality, estimated through the energy deposited in the zero degree calorimeter located in the Pb-going direction. The pT-differential J/ψ production cross section is measured at backward and forward rapidity for several centrality classes, together with the corresponding average 〈pT〉 and 〈pT2〉 values. The nuclear effects affecting the production of both charmonium states are studied using the nuclear modification factor. In the p-going direction, a suppression of the production of both charmonium states is observed, which seems to increase from peripheral to central collisions. In the Pb-going direction, however, the centrality dependence is different for the two states: the nuclear modification factor of the J/ψ increases from below unity in peripheral collisions to above unity in central collisions, while for the ψ(2S) it stays below or consistent with unity for all centralities with no significant centrality dependence. The results are compared with measurements in p-Pb collisions at sNN = 5.02 TeV and no significant dependence on the energy of the collision is observed. Finally, the results are compared with theoretical models implementing various nuclear matter effects. [Figure not available: see fulltext.]
Published: 2021

16. Pion–kaon femtoscopy and the lifetime of the hadronic phase in Pb−Pb collisions at s NN = 2.76 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Agha, S, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Molina, R Alfaro, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Alba, JL Bazo, Bearden, IG, Beattie, C, Bedda, C, Belikov, I, Hechavarria, ADC Bell, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, and Bhattacharjee, B
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Mathematical Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics, Mathematical sciences, Physical sciences
Abstract: In this paper, the first femtoscopic analysis of pion–kaon correlations at the LHC is reported. The analysis was performed on the Pb–Pb collision data at sNN=2.76 TeV recorded with the ALICE detector. The non-identical particle correlations probe the spatio-temporal separation between sources of different particle species as well as the average source size of the emitting system. The sizes of the pion and kaon sources increase with centrality, and pions are emitted closer to the centre of the system and/or later than kaons. This is naturally expected in a system with strong radial flow and is qualitatively reproduced by hydrodynamic models. ALICE data on pion–kaon emission asymmetry are consistent with (3+1)-dimensional viscous hydrodynamics coupled to a statistical hadronisation model, resonance propagation, and decay code THERMINATOR 2 calculation, with an additional time delay between 1 and 2 fm/c for kaons. The delay can be interpreted as evidence for a significant hadronic rescattering phase in heavy-ion collisions at the LHC.
Published: 2021

17. Transverse-momentum and event-shape dependence of D-meson flow harmonics in Pb–Pb collisions at s NN = 5.02 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Molina, R Alfaro, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Alba, JL Bazo, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Hechavarria, ADC Bell, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, and Bhatt, H
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Mathematical Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics, Mathematical sciences, Physical sciences
Abstract: The elliptic and triangular flow coefficients v2 and v3 of prompt D0, D+, and D⁎+ mesons were measured at midrapidity (|y|
Published: 2021

18. Centrality dependence of J/ψ and ψ(2S) production and nuclear modification in p-Pb collisions at √sNN = 8.16 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Agha, S, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Bedda, C, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berdnikova, A, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, and Bhatt, H
Subjects: Hadron-Hadron scattering, Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: The inclusive production of the J/ψ and ψ(2S) charmonium states is studied as a function of centrality in p-Pb collisions at a centre-of-mass energy per nucleon pair sNN = 8.16 TeV at the LHC. The measurement is performed in the dimuon decay channel with the ALICE apparatus in the centre-of-mass rapidity intervals −4.46 < ycms< −2.96 (Pb-going direction) and 2.03 < ycms< 3.53 (p-going direction), down to zero transverse momentum (pT). The J/ψ and ψ(2S) production cross sections are evaluated as a function of the collision centrality, estimated through the energy deposited in the zero degree calorimeter located in the Pb-going direction. The pT-differential J/ψ production cross section is measured at backward and forward rapidity for several centrality classes, together with the corresponding average 〈pT〉 and 〈pT2〉 values. The nuclear effects affecting the production of both charmonium states are studied using the nuclear modification factor. In the p-going direction, a suppression of the production of both charmonium states is observed, which seems to increase from peripheral to central collisions. In the Pb-going direction, however, the centrality dependence is different for the two states: the nuclear modification factor of the J/ψ increases from below unity in peripheral collisions to above unity in central collisions, while for the ψ(2S) it stays below or consistent with unity for all centralities with no significant centrality dependence. The results are compared with measurements in p-Pb collisions at sNN = 5.02 TeV and no significant dependence on the energy of the collision is observed. Finally, the results are compared with theoretical models implementing various nuclear matter effects. [Figure not available: see fulltext.]
Published: 2021

19. Unveiling the strong interaction among hadrons at the LHC

Author: Acharya, S, Acosta, FT, Adamova, D, Adler, A, Adolfsson, J, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahn, SU, Aiola, S, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Anticic, T, Antinori, F, Antonioli, P, Anwar, R, Apadula, N, Aphecetche, L, Appelshaeuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Azmi, MD, Badala, A, Baek, YW, Bagnasco, S, Bailhache, R, Bala, R, Baldisseri, A, Ball, M, Baral, RC, Barbano, AM, Barbera, R, Barile, F, Barioglio, L, Barnafoeldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Batzing, PC, Bazo Alba, JL, Bearden, IG, Beck, H, Bedda, C, Behera, NK, Belikov, I, Bellini, F, Bello Martinez, H, Bellwied, R, Beltran, LGE, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Betev, L, Bhaduri, PP, Bhasin, A, Bhat, IR, Bhatt, H, Bhattacharjee, B, Bhom, J, Bianchi, A, and Bianchi, L
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, ALICE Collaboration, General Science & Technology
Abstract: One of the key challenges for nuclear physics today is to understand from first principles the effective interaction between hadrons with different quark content. First successes have been achieved using techniques that solve the dynamics of quarks and gluons on discrete space-time lattices1,2. Experimentally, the dynamics of the strong interaction have been studied by scattering hadrons off each other. Such scattering experiments are difficult or impossible for unstable hadrons3-6 and so high-quality measurements exist only for hadrons containing up and down quarks7. Here we demonstrate that measuring correlations in the momentum space between hadron pairs8-12 produced in ultrarelativistic proton-proton collisions at the CERN Large Hadron Collider (LHC) provides a precise method with which to obtain the missing information on the interaction dynamics between any pair of unstable hadrons. Specifically, we discuss the case of the interaction of baryons containing strange quarks (hyperons). We demonstrate how, using precision measurements of proton-omega baryon correlations, the effect of the strong interaction for this hadron-hadron pair can be studied with precision similar to, and compared with, predictions from lattice calculations13,14. The large number of hyperons identified in proton-proton collisions at the LHC, together with accurate modelling15 of the small (approximately one femtometre) inter-particle distance and exact predictions for the correlation functions, enables a detailed determination of the short-range part of the nucleon-hyperon interaction.
Published: 2020

20. Search for a common baryon source in high-multiplicity pp collisions at the LHC

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, and Bhattacharjee, B
Subjects: Nuclear & Particles Physics, Mathematical Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We report on the measurement of the size of the particle-emitting source from two-baryon correlations with ALICE in high-multiplicity pp collisions at s=13 TeV. The source radius is studied with low relative momentum p–p, p‾–p‾, p–Λ, and p‾–Λ‾ pairs as a function of the pair transverse mass mT considering for the first time in a quantitative way the effect of strong resonance decays. After correcting for this effect, the radii extracted for pairs of different particle species agree. This indicates that protons, antiprotons, Λ s, and Λ‾ s originate from the same source. Within the measured mT range (1.1–2.2) GeV/c2the invariant radius of this common source varies between 1.3 and 0.85 fm. These results provide a precise reference for studies of the strong hadron–hadron interactions and for the investigation of collective properties in small colliding systems.
Published: 2020

21. Production of ω mesons in pp collisions at s=7TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Agha, S, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Alba, JL Bazo, Bearden, IG, Beattie, C, Bedda, C, Belikov, I, Hechavarria, ADC Bell, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, and Bhattacharjee, B
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Astronomical sciences, Atomic, molecular and optical physics, Particle and high energy physics
Abstract: The invariant differential cross section of inclusive ω(782) meson production at midrapidity (| y| < 0.5) in pp collisions at s=7TeV was measured with the ALICE detector at the LHC over a transverse momentum range of 2
Published: 2020

22. Production of ω mesons in pp collisions at √s=7TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Agha, S, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Alba, JLB, Bearden, IG, Beattie, C, Bedda, C, Belikov, I, Hechavarria, ADCB, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, and Bhattacharjee, B
Subjects: Nuclear & Particles Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: The invariant differential cross section of inclusive ω(782) meson production at midrapidity (| y| < 0.5) in pp collisions at s=7TeV was measured with the ALICE detector at the LHC over a transverse momentum range of 2
Published: 2020

23. Dielectron production in proton-proton and proton-lead collisions at sNN =5.02 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, and Bhatt, H
Abstract: The first measurements of dielectron production at midrapidity (ηe
Published: 2020

24. Elliptic and triangular flow of (anti)deuterons in Pb-Pb collisions at sNN =5.02 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Bedda, C, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, and Bhattacharjee, B
Abstract: The measurements of the (anti)deuteron elliptic flow (v2) and the first measurements of triangular flow (v3) in Pb-Pb collisions at a center-of-mass energy per nucleon-nucleon collision sNN = 5.02 TeV are presented. A mass ordering at low transverse momentum (pT) is observed when comparing these measurements with those of other identified hadrons, as expected from relativistic hydrodynamics. The measured (anti)deuteron v2 lies between the predictions from the simple coalescence and blast-wave models, which provide a good description of the data only for more peripheral and for more central collisions, respectively. The mass number scaling, which is violated for v2, is approximately valid for the (anti)deuterons v3. The measured v2 and v3 are also compared with the predictions from a coalescence approach with phase-space distributions of nucleons generated by iebe-vishnu with ampt initial conditions coupled with urqmd, and from a dynamical model based on relativistic hydrodynamics coupled to the hadronic afterburner smash. The model predictions are consistent with the data within the uncertainties in midcentral collisions, while a deviation is observed in the most central collisions.
Published: 2020

25. Multiplicity dependence of inclusive J/ψ production at midrapidity in pp collisions at s=13 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berdnikova, A, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, and Bhat, MA
Subjects: Mathematical Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: Measurements of the inclusive J/ψ yield as a function of charged-particle pseudorapidity density dNch/dη in pp collisions at s=13 TeV with ALICE at the LHC are reported. The J/ψ meson yield is measured at midrapidity (|y|
Published: 2020

26. Elliptic and triangular flow of (anti)deuterons in Pb-Pb collisions at sNN=5.02 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Molina, R Alfaro, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Alba, JL Bazo, Bearden, IG, Beattie, C, Bedda, C, Belikov, I, Hechavarria, ADC Bell, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, and Bhattacharjee, B
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Nuclear and plasma physics
Abstract: The measurements of the (anti)deuteron elliptic flow (v2) and the first measurements of triangular flow (v3) in Pb-Pb collisions at a center-of-mass energy per nucleon-nucleon collision sNN = 5.02 TeV are presented. A mass ordering at low transverse momentum (pT) is observed when comparing these measurements with those of other identified hadrons, as expected from relativistic hydrodynamics. The measured (anti)deuteron v2 lies between the predictions from the simple coalescence and blast-wave models, which provide a good description of the data only for more peripheral and for more central collisions, respectively. The mass number scaling, which is violated for v2, is approximately valid for the (anti)deuterons v3. The measured v2 and v3 are also compared with the predictions from a coalescence approach with phase-space distributions of nucleons generated by iebe-vishnu with ampt initial conditions coupled with urqmd, and from a dynamical model based on relativistic hydrodynamics coupled to the hadronic afterburner smash. The model predictions are consistent with the data within the uncertainties in midcentral collisions, while a deviation is observed in the most central collisions.
Published: 2020

27. Multiplicity dependence of inclusive J/ψ production at midrapidity in pp collisions at s = 13 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Molina, R Alfaro, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Alba, JL Bazo, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Hechavarria, ADC Bell, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berdnikova, A, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, and Bhat, MA
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Mathematical Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics, Mathematical sciences, Physical sciences
Abstract: Measurements of the inclusive J/ψ yield as a function of charged-particle pseudorapidity density dNch/dη in pp collisions at s=13 TeV with ALICE at the LHC are reported. The J/ψ meson yield is measured at midrapidity (|y|
Published: 2020

28. Measurement of isolated photon-hadron correlations in sNN = 5.02 TeV pp and p -Pb collisions

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, and Bhatt, H
Abstract: This paper presents isolated photon-hadron correlations using pp and p-Pb data collected by the ALICE detector at the LHC. For photons with |η|
Published: 2020

29. Azimuthal correlations of prompt D mesons with charged particles in pp and p–Pb collisions at sNN=5.02TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Anwar, R, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Baldisseri, A, Ball, M, Balouza, S, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Alba, JL Bazo, Bearden, IG, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, Bhattacharjee, B, Bianchi, A, Bianchi, L, and Bianchi, N
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Astronomical sciences, Atomic, molecular and optical physics, Particle and high energy physics
Abstract: The measurement of the azimuthal-correlation function of prompt D mesons with charged particles in pp collisions at s=5.02TeV and p–Pb collisions at sNN=5.02TeV with the ALICE detector at the LHC is reported. The D , D +, and D ∗ + mesons, together with their charge conjugates, were reconstructed at midrapidity in the transverse momentum interval 30.3GeV/c and pseudorapidity | η| < 0.8. The properties of the correlation peaks appearing in the near- and away-side regions (for Δ φ≈ 0 and Δ φ≈ π, respectively) were extracted via a fit to the azimuthal correlation functions. The shape of the correlation functions and the near- and away-side peak features are found to be consistent in pp and p–Pb collisions, showing no modifications due to nuclear effects within uncertainties. The results are compared with predictions from Monte Carlo simulations performed with the PYTHIA, POWHEG+PYTHIA, HERWIG, and EPOS 3 event generators.
Published: 2020

30. J/ψ elliptic and triangular flow in Pb-Pb collisions at sNN = 5.02 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, and Bhatt, H
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Hadron-Hadron scattering, Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Nuclear and plasma physics, Particle and high energy physics
Abstract: The inclusive J/ψ elliptic (v2) and triangular (v3) flow coefficients measured at forward rapidity (2.5 < y < 4) and the v2 measured at midrapidity (|y| < 0.9) in Pb-Pb collisions at sNN = 5.02 TeV using the ALICE detector at the LHC are reported. The entire Pb-Pb data sample collected during Run 2 is employed, amounting to an integrated luminosity of 750 μb−1 at forward rapidity and 93 μb−1 at midrapidity. The results are obtained using the scalar product method and are reported as a function of transverse momentum pT and collision centrality. At midrapidity, the J/ψ v2 is in agreement with the forward rapidity measurement. The centrality averaged results indicate a positive J/ψ v3 with a significance of more than 5σ at forward rapidity in the pT range 2 < pT< 5 GeV/c. The forward rapidity v2, v3, and v3/v2 results at low and intermediate pT (pT ≲ 8 GeV/c) exhibit a mass hierarchy when compared to pions and D mesons, while converging into a species-independent curve at higher pT. At low and intermediate pT, the results could be interpreted in terms of a later thermalization of charm quarks compared to light quarks, while at high pT, path-length dependent effects seem to dominate. The J/ψ v2 measurements are further compared to a microscopic transport model calculation. Using a simplified extension of the quark scaling approach involving both light and charm quark flow components, it is shown that the D-meson vn measurements can be described based on those for charged pions and J/ψ flow. [Figure not available: see fulltext.]
Published: 2020

31. Azimuthal correlations of prompt D mesons with charged particles in pp and p–Pb collisions at √sNN=5.02TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Anwar, R, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Baldisseri, A, Ball, M, Balouza, S, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Alba, JLB, Bearden, IG, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, Bhattacharjee, B, Bianchi, A, Bianchi, L, and Bianchi, N
Subjects: Nuclear & Particles Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics
Abstract: The measurement of the azimuthal-correlation function of prompt D mesons with charged particles in pp collisions at s=5.02TeV and p–Pb collisions at sNN=5.02TeV with the ALICE detector at the LHC is reported. The D , D +, and D ∗ + mesons, together with their charge conjugates, were reconstructed at midrapidity in the transverse momentum interval 30.3GeV/c and pseudorapidity | η| < 0.8. The properties of the correlation peaks appearing in the near- and away-side regions (for Δ φ≈ 0 and Δ φ≈ π, respectively) were extracted via a fit to the azimuthal correlation functions. The shape of the correlation functions and the near- and away-side peak features are found to be consistent in pp and p–Pb collisions, showing no modifications due to nuclear effects within uncertainties. The results are compared with predictions from Monte Carlo simulations performed with the PYTHIA, POWHEG+PYTHIA, HERWIG, and EPOS 3 event generators.
Published: 2020

32. J/ψ elliptic and triangular flow in Pb-Pb collisions at √sNN = 5.02 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, and Bhatt, H
Subjects: Hadron-Hadron scattering, Nuclear & Particles Physics, Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics
Abstract: The inclusive J/ψ elliptic (v2) and triangular (v3) flow coefficients measured at forward rapidity (2.5 < y < 4) and the v2 measured at midrapidity (|y| < 0.9) in Pb-Pb collisions at sNN = 5.02 TeV using the ALICE detector at the LHC are reported. The entire Pb-Pb data sample collected during Run 2 is employed, amounting to an integrated luminosity of 750 μb−1 at forward rapidity and 93 μb−1 at midrapidity. The results are obtained using the scalar product method and are reported as a function of transverse momentum pT and collision centrality. At midrapidity, the J/ψ v2 is in agreement with the forward rapidity measurement. The centrality averaged results indicate a positive J/ψ v3 with a significance of more than 5σ at forward rapidity in the pT range 2 < pT< 5 GeV/c. The forward rapidity v2, v3, and v3/v2 results at low and intermediate pT (pT ≲ 8 GeV/c) exhibit a mass hierarchy when compared to pions and D mesons, while converging into a species-independent curve at higher pT. At low and intermediate pT, the results could be interpreted in terms of a later thermalization of charm quarks compared to light quarks, while at high pT, path-length dependent effects seem to dominate. The J/ψ v2 measurements are further compared to a microscopic transport model calculation. Using a simplified extension of the quark scaling approach involving both light and charm quark flow components, it is shown that the D-meson vn measurements can be described based on those for charged pions and J/ψ flow. [Figure not available: see fulltext.]
Published: 2020

33. Z-boson production in p-Pb collisions at sNN = 8.16 TeV and Pb-Pb collisions at sNN = 5.02 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berdnikova, A, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, and Bhat, MA
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Lepton-Nucleon Scattering, Heavy-ion collision, Electroweak interaction, Particle and resonance production, Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Nuclear and plasma physics, Particle and high energy physics
Abstract: Measurement of Z-boson production in p-Pb collisions at sNN = 8.16 TeV and Pb-Pb collisions at sNN = 5.02 TeV is reported. It is performed in the dimuon decay channel, through the detection of muons with pseudorapidity −4 < ημ< −2.5 and transverse momentum pTμ> 20 GeV/c in the laboratory frame. The invariant yield and nuclear modification factor are measured for opposite-sign dimuons with invariant mass 60 < mμμ< 120 GeV/c2 and rapidity 2.5
Published: 2020

34. (Anti-)deuteron production in pp collisions at s=13TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Anwar, R, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Baldisseri, A, Ball, M, Balouza, S, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Alba, JL Bazo, Bearden, IG, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, Bhattacharjee, B, Bianchi, A, Bianchi, L, and Bianchi, N
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Synchrotrons and Accelerators, Physical Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Astronomical sciences, Atomic, molecular and optical physics, Particle and high energy physics
Abstract: The study of (anti-)deuteron production in pp collisions has proven to be a powerful tool to investigate the formation mechanism of loosely bound states in high-energy hadronic collisions. In this paper the production of (anti-)deuterons is studied as a function of the charged particle multiplicity in inelastic pp collisions at s=13 TeV using the ALICE experiment. Thanks to the large number of accumulated minimum bias events, it has been possible to measure (anti-)deuteron production in pp collisions up to the same charged particle multiplicity (d Nch/ d η∼ 26) as measured in p–Pb collisions at similar centre-of-mass energies. Within the uncertainties, the deuteron yield in pp collisions resembles the one in p–Pb interactions, suggesting a common formation mechanism behind the production of light nuclei in hadronic interactions. In this context the measurements are compared with the expectations of coalescence and statistical hadronisation models (SHM).
Published: 2020

35. J/ψ production as a function of charged-particle multiplicity in p-Pb collisions at sNN = 8.16 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berdnikova, A, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, and Bhatt, H
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Hadron-Hadron scattering, Particle correlations and fluctuations, Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Nuclear and plasma physics, Particle and high energy physics
Abstract: Inclusive J/ψ yields and average transverse momenta in p-Pb collisions at a center-of-mass energy per nucleon pair sNN = 8.16 TeV are measured as a function of the charged-particle pseudorapidity density with ALICE. The J/ψ mesons are reconstructed at forward (2.03 < ycms< 3.53) and backward (−4.46 < ycms< −2.96) center-of-mass rapidity in their dimuon decay channel while the charged-particle pseudorapidity density is measured around midrapidity. The J/ψ yields at forward and backward rapidity normalized to their respective average values increase with the normalized charged-particle pseudorapidity density, the former showing a weaker increase than the latter. The normalized average transverse momenta at forward and backward rapidity manifest a steady increase from low to high charged-particle pseudorapidity density with a saturation beyond the average value. [Figure not available: see fulltext.]
Published: 2020

36. Constraining the Chiral Magnetic Effect with charge-dependent azimuthal correlations in Pb-Pb collisions at sNN = 2.76 and 5.02 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berdnikova, A, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, and Bhatt, H
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Hadron-Hadron scattering, Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Nuclear and plasma physics, Particle and high energy physics
Abstract: Systematic studies of charge-dependent two- and three-particle correlations in Pb-Pb collisions at sNN = 2.76 and 5.02 TeV used to probe the Chiral Magnetic Effect (CME) are presented. These measurements are performed for charged particles in the pseudorapidity (η) and transverse momentum (pT) ranges |η| < 0.8 and 0.2 < pT< 5 GeV/c. A significant charge-dependent signal that becomes more pronounced for peripheral collisions is reported for the CME-sensitive correlators γ1, 1 = 〈cos(φα + φβ − 2Ψ2)〉 and γ1, − 3 = 〈cos(φα − 3φβ + 2Ψ2)〉. The results are used to estimate the contribution of background effects, associated with local charge conservation coupled to anisotropic flow modulations, to measurements of the CME. A blast-wave parametrisation that incorporates local charge conservation tuned to reproduce the centrality dependent background effects is not able to fully describe the measured γ1,1. Finally, the charge and centrality dependence of mixed-harmonics three-particle correlations, of the form γ1, 2 = 〈cos(φα + 2φβ − 3Ψ3)〉, which are insensitive to the CME signal, verify again that background contributions dominate the measurement of γ1,1. [Figure not available: see fulltext.]
Published: 2020

37. J/ψ production as a function of charged-particle multiplicity in p-Pb collisions at √sNN = 8.16 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berdnikova, A, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, and Bhatt, H
Subjects: Hadron-Hadron scattering, Particle correlations and fluctuations, Nuclear & Particles Physics, Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics
Abstract: Inclusive J/ψ yields and average transverse momenta in p-Pb collisions at a center-of-mass energy per nucleon pair sNN = 8.16 TeV are measured as a function of the charged-particle pseudorapidity density with ALICE. The J/ψ mesons are reconstructed at forward (2.03 < ycms< 3.53) and backward (−4.46 < ycms< −2.96) center-of-mass rapidity in their dimuon decay channel while the charged-particle pseudorapidity density is measured around midrapidity. The J/ψ yields at forward and backward rapidity normalized to their respective average values increase with the normalized charged-particle pseudorapidity density, the former showing a weaker increase than the latter. The normalized average transverse momenta at forward and backward rapidity manifest a steady increase from low to high charged-particle pseudorapidity density with a saturation beyond the average value. [Figure not available: see fulltext.]
Published: 2020

38. (Anti-)deuteron production in pp collisions at √s=13TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Anwar, R, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Baldisseri, A, Ball, M, Balouza, S, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Alba, JLB, Bearden, IG, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, Bhattacharjee, B, Bianchi, A, Bianchi, L, and Bianchi, N
Subjects: Nuclear & Particles Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: The study of (anti-)deuteron production in pp collisions has proven to be a powerful tool to investigate the formation mechanism of loosely bound states in high-energy hadronic collisions. In this paper the production of (anti-)deuterons is studied as a function of the charged particle multiplicity in inelastic pp collisions at s=13 TeV using the ALICE experiment. Thanks to the large number of accumulated minimum bias events, it has been possible to measure (anti-)deuteron production in pp collisions up to the same charged particle multiplicity (d Nch/ d η∼ 26) as measured in p–Pb collisions at similar centre-of-mass energies. Within the uncertainties, the deuteron yield in pp collisions resembles the one in p–Pb interactions, suggesting a common formation mechanism behind the production of light nuclei in hadronic interactions. In this context the measurements are compared with the expectations of coalescence and statistical hadronisation models (SHM).
Published: 2020

39. Z-boson production in p-Pb collisions at √sNN = 8.16 TeV and Pb-Pb collisions at √sNN = 5.02 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alizadehvandchali, N, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berdnikova, A, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, and Bhat, MA
Subjects: Lepton-Nucleon Scattering, Heavy-ion collision, Electroweak interaction, Particle and resonance production, Nuclear & Particles Physics, Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics
Abstract: Measurement of Z-boson production in p-Pb collisions at sNN = 8.16 TeV and Pb-Pb collisions at sNN = 5.02 TeV is reported. It is performed in the dimuon decay channel, through the detection of muons with pseudorapidity −4 < ημ< −2.5 and transverse momentum pTμ> 20 GeV/c in the laboratory frame. The invariant yield and nuclear modification factor are measured for opposite-sign dimuons with invariant mass 60 < mμμ< 120 GeV/c2 and rapidity 2.5
Published: 2020

40. Constraining the Chiral Magnetic Effect with charge-dependent azimuthal correlations in Pb-Pb collisions at √sNN = 2.76 and 5.02 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akbar, Z, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Bartels, C, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berdnikova, A, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, and Bhatt, H
Subjects: Hadron-Hadron scattering, Nuclear & Particles Physics, Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics
Abstract: Systematic studies of charge-dependent two- and three-particle correlations in Pb-Pb collisions at sNN = 2.76 and 5.02 TeV used to probe the Chiral Magnetic Effect (CME) are presented. These measurements are performed for charged particles in the pseudorapidity (η) and transverse momentum (pT) ranges |η| < 0.8 and 0.2 < pT< 5 GeV/c. A significant charge-dependent signal that becomes more pronounced for peripheral collisions is reported for the CME-sensitive correlators γ1, 1 = 〈cos(φα + φβ − 2Ψ2)〉 and γ1, − 3 = 〈cos(φα − 3φβ + 2Ψ2)〉. The results are used to estimate the contribution of background effects, associated with local charge conservation coupled to anisotropic flow modulations, to measurements of the CME. A blast-wave parametrisation that incorporates local charge conservation tuned to reproduce the centrality dependent background effects is not able to fully describe the measured γ1,1. Finally, the charge and centrality dependence of mixed-harmonics three-particle correlations, of the form γ1, 2 = 〈cos(φα + 2φβ − 3Ψ3)〉, which are insensitive to the CME signal, verify again that background contributions dominate the measurement of γ1,1. [Figure not available: see fulltext.]
Published: 2020

41. Multiplicity dependence of K*(892)0 and ϕ(1020) production in pp collisions at s=13 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Anwar, R, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Baldisseri, A, Ball, M, Balouza, S, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, Bhattacharjee, B, Bianchi, A, Bianchi, L, and Bianchi, N
Subjects: Mathematical Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics
Abstract: The striking similarities that have been observed between high-multiplicity proton-proton (pp) collisions and heavy-ion collisions can be explored through multiplicity-differential measurements of identified hadrons in pp collisions. With these measurements, it is possible to study mechanisms such as collective flow that determine the shapes of hadron transverse momentum (pT) spectra, to search for possible modifications of the yields of short-lived hadronic resonances due to scattering effects in an extended hadron-gas phase, and to investigate different explanations provided by phenomenological models for enhancement of strangeness production with increasing multiplicity. In this paper, these topics are addressed through measurements of the K⁎(892)0 and ϕ(1020) mesons at midrapidity in pp collisions at s= 13 TeV as a function of the charged-particle multiplicity. The results include the pT spectra, pT-integrated yields, mean transverse momenta, and the ratios of the yields of these resonances to those of longer-lived hadrons. Comparisons with results from other collision systems and energies, as well as predictions from phenomenological models, are also discussed.
Published: 2020

42. Global baryon number conservation encoded in net-proton fluctuations measured in Pb–Pb collisions at sNN=2.76 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Anwar, R, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Baldisseri, A, Ball, M, Balouza, S, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, Bhattacharjee, B, Bianchi, A, Bianchi, L, and Bianchi, N
Subjects: Mathematical Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics
Abstract: Experimental results are presented on event-by-event net-proton fluctuation measurements in Pb–Pb collisions at sNN=2.76 TeV, recorded by the ALICE detector at the CERN LHC. These measurements have as their ultimate goal an experimental test of Lattice QCD (LQCD) predictions on second and higher order cumulants of net-baryon distributions to search for critical behavior near the QCD phase boundary. Before confronting them with LQCD predictions, account has to be taken of correlations stemming from baryon number conservation as well as fluctuations of participating nucleons. Both effects influence the experimental measurements and are usually not considered in theoretical calculations. For the first time, it is shown that event-by-event baryon number conservation leads to subtle long-range correlations arising from very early interactions in the collisions.
Published: 2020

43. Global baryon number conservation encoded in net-proton fluctuations measured in Pb–Pb collisions at s NN = 2.76 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Molina, R Alfaro, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Anwar, R, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Baldisseri, A, Ball, M, Balouza, S, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Alba, JL Bazo, Bearden, IG, Bedda, C, Behera, NK, Belikov, I, Hechavarria, ADC Bell, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, Bhattacharjee, B, Bianchi, A, Bianchi, L, and Bianchi, N
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Mathematical Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics, Mathematical sciences, Physical sciences
Abstract: Experimental results are presented on event-by-event net-proton fluctuation measurements in Pb–Pb collisions at sNN=2.76 TeV, recorded by the ALICE detector at the CERN LHC. These measurements have as their ultimate goal an experimental test of Lattice QCD (LQCD) predictions on second and higher order cumulants of net-baryon distributions to search for critical behavior near the QCD phase boundary. Before confronting them with LQCD predictions, account has to be taken of correlations stemming from baryon number conservation as well as fluctuations of participating nucleons. Both effects influence the experimental measurements and are usually not considered in theoretical calculations. For the first time, it is shown that event-by-event baryon number conservation leads to subtle long-range correlations arising from very early interactions in the collisions.
Published: 2020

44. Multiplicity dependence of π, K, and p production in pp collisions at s=13 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Alba, JL Bazo, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, Bhattacharjee, B, and Bianchi, A
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Astronomical sciences, Atomic, molecular and optical physics, Particle and high energy physics
Abstract: This paper presents the measurements of π±, K ±, p and p ¯ transverse momentum (pT) spectra as a function of charged-particle multiplicity density in proton–proton (pp) collisions at s=13TeV with the ALICE detector at the LHC. Such study allows us to isolate the center-of-mass energy dependence of light-flavour particle production. The measurements reported here cover a pT range from 0.1 to 20 GeV / c and are done in the rapidity interval | y| < 0.5. The pT-differential particle ratios exhibit an evolution with multiplicity, similar to that observed in pp collisions at s=7TeV, which is qualitatively described by some of the hydrodynamical and pQCD-inspired models discussed in this paper. Furthermore, the pT-integrated hadron-to-pion yield ratios measured in pp collisions at two different center-of-mass energies are consistent when compared at similar multiplicities. This also extends to strange and multi-strange hadrons, suggesting that, at LHC energies, particle hadrochemistry scales with particle multiplicity the same way under different collision energies and colliding systems.
Published: 2020

45. K*(892)0 and ϕ(1020) production at midrapidity in pp collisions at s=8 TeV

Author: Acharya, S, Adamová, D, Adhya, SP, Adler, A, Adolfsson, J, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Molina, R Alfaro, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Anwar, R, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Baldisseri, A, Ball, M, Balouza, S, Baral, RC, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Batzing, PC, Bauri, D, Alba, JL Bazo, Bearden, IG, Bedda, C, Behera, NK, Belikov, I, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, Bhattacharjee, B, and Bianchi, A
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Nuclear and plasma physics
Abstract: The production of K∗(892)0 and φ(1020) in pp collisions at s=8 TeV was measured by using Run 1 data collected by the ALICE collaboration at the CERN Large Hadron Collider (LHC). The pT-differential yields d2N/dydpT in the range 0
Published: 2020

46. Multiplicity dependence of K*(892)0 and ϕ(1020) production in pp collisions at s = 13 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Molina, R Alfaro, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Anwar, R, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Baldisseri, A, Ball, M, Balouza, S, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Alba, JL Bazo, Bearden, IG, Bedda, C, Behera, NK, Belikov, I, Hechavarria, ADC Bell, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, Bhattacharjee, B, Bianchi, A, Bianchi, L, and Bianchi, N
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Synchrotrons and Accelerators, Physical Sciences, Mathematical Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics, Mathematical sciences, Physical sciences
Abstract: The striking similarities that have been observed between high-multiplicity proton-proton (pp) collisions and heavy-ion collisions can be explored through multiplicity-differential measurements of identified hadrons in pp collisions. With these measurements, it is possible to study mechanisms such as collective flow that determine the shapes of hadron transverse momentum (pT) spectra, to search for possible modifications of the yields of short-lived hadronic resonances due to scattering effects in an extended hadron-gas phase, and to investigate different explanations provided by phenomenological models for enhancement of strangeness production with increasing multiplicity. In this paper, these topics are addressed through measurements of the K⁎(892)0 and ϕ(1020) mesons at midrapidity in pp collisions at s= 13 TeV as a function of the charged-particle multiplicity. The results include the pT spectra, pT-integrated yields, mean transverse momenta, and the ratios of the yields of these resonances to those of longer-lived hadrons. Comparisons with results from other collision systems and energies, as well as predictions from phenomenological models, are also discussed.
Published: 2020

47. Multiplicity dependence of π , K, and p production in pp collisions at √s=13 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Balbino, A, Baldisseri, A, Ball, M, Balouza, S, Banerjee, D, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Alba, JLB, Bearden, IG, Beattie, C, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, Bhattacharjee, B, and Bianchi, A
Subjects: Nuclear & Particles Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: This paper presents the measurements of π±, K ±, p and p ¯ transverse momentum (pT) spectra as a function of charged-particle multiplicity density in proton–proton (pp) collisions at s=13TeV with the ALICE detector at the LHC. Such study allows us to isolate the center-of-mass energy dependence of light-flavour particle production. The measurements reported here cover a pT range from 0.1 to 20 GeV / c and are done in the rapidity interval | y| < 0.5. The pT-differential particle ratios exhibit an evolution with multiplicity, similar to that observed in pp collisions at s=7TeV, which is qualitatively described by some of the hydrodynamical and pQCD-inspired models discussed in this paper. Furthermore, the pT-integrated hadron-to-pion yield ratios measured in pp collisions at two different center-of-mass energies are consistent when compared at similar multiplicities. This also extends to strange and multi-strange hadrons, suggesting that, at LHC energies, particle hadrochemistry scales with particle multiplicity the same way under different collision energies and colliding systems.
Published: 2020

48. K∗(892)0 and φ(1020) production at midrapidity in pp collisions at s =8 TeV

Author: Acharya, S, Adamová, D, Adhya, SP, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Anwar, R, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Baldisseri, A, Ball, M, Balouza, S, Baral, RC, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Batzing, PC, Bauri, D, Bazo Alba, JL, Bearden, IG, Bedda, C, Behera, NK, Belikov, I, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, Bhattacharjee, B, and Bianchi, A
Subjects: Nuclear & Particles Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: The production of K∗(892)0 and φ(1020) in pp collisions at s=8 TeV was measured by using Run 1 data collected by the ALICE collaboration at the CERN Large Hadron Collider (LHC). The pT-differential yields d2N/dydpT in the range 0
Published: 2020

49. Probing the Effects of Strong Electromagnetic Fields with Charge-Dependent Directed Flow in Pb-Pb Collisions at the LHC

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Molina, R Alfaro, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Anwar, R, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Baldisseri, A, Ball, M, Balouza, S, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Alba, JL Bazo, Bearden, IG, Bedda, C, Behera, NK, Belikov, I, Hechavarria, ADC Bell, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, Bhattacharjee, B, Bianchi, A, Bianchi, L, and Bianchi, N
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, A Large Ion Collider Experiment Collaboration, Mathematical Sciences, Engineering, General Physics, Mathematical sciences, Physical sciences
Abstract: The first measurement at the LHC of charge-dependent directed flow (v_{1}) relative to the spectator plane is presented for Pb-Pb collisions at sqrt[s_{NN}]=5.02 TeV. Results are reported for charged hadrons and D^{0} mesons for the transverse momentum intervals p_{T}>0.2 GeV/c and 3
Published: 2020

50. ϒ production in p–Pb collisions at sNN=8.16 TeV

Author: Acharya, S, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfanda, HM, Alfaro Molina, R, Ali, B, Ali, Y, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Anaam, MN, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Angeletti, M, Anguelov, V, Anson, C, Antičić, T, Antinori, F, Antonioli, P, Anwar, R, Apadula, N, Aphecetche, L, Appelshäuser, H, Arcelli, S, Arnaldi, R, Arratia, M, Arsene, IC, Arslandok, M, Augustinus, A, Averbeck, R, Aziz, S, Azmi, MD, Badalà, A, Baek, YW, Bagnasco, S, Bai, X, Bailhache, R, Bala, R, Baldisseri, A, Ball, M, Balouza, S, Barbera, R, Barioglio, L, Barnaföldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Baruffaldi, F, Bastid, N, Basu, S, Batigne, G, Batyunya, B, Bauri, D, Bazo Alba, JL, Bearden, IG, Bedda, C, Behera, NK, Belikov, I, Bell Hechavarria, ADC, Bellini, F, Bellwied, R, Belyaev, V, Bencedi, G, Beole, S, Bercuci, A, Berdnikov, Y, Berenyi, D, Bertens, RA, Berzano, D, Besoiu, MG, Betev, L, Bhasin, A, Bhat, IR, Bhat, MA, Bhatt, H, Bhattacharjee, B, Bianchi, A, Bianchi, L, and Bianchi, N
Subjects: Mathematical Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics
Abstract: ϒ production in p–Pb interactions is studied at the centre-of-mass energy per nucleon–nucleon collision sNN=8.16 TeV with the ALICE detector at the CERN LHC. The measurement is performed reconstructing bottomonium resonances via their dimuon decay channel, in the centre-of-mass rapidity intervals 2.03
Published: 2020

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