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Measurement of $K_S^0$ and $K^{0}$ in $p$$+$$p$, $d$$+$Au, and Cu$+$Cu collisions at $\sqrt{s_{_{NN}}}=200$ GeV

Adare, A. ; Afanasiev, S. ; Aidala, C. ; Ajitanand, N. N. ; Akiba, Y. ; Akimoto, R. ; Al-Bataineh, H. ; Alexander, J. ; Alfred, M. ; Angerami, A. ; Aoki, K. ; Apadula, N. ; Aphecetche, Laurent ; Aramaki, Y. ; Armendariz, R. ; Aronson, S. H. ; Asai, J. ; Asano, H. ; Atomssa, E. T. ; Averbeck, R. ; Awes, T. C. ; Azmoun, B. ; Babintsev, V. ; Bai, M. ; Baksay, G. ; Baksay, L. ; Baldisseri, A. ; Bandara, N. S. ; Bannier, B. ; Barish, K. N. ; Barnes, P. D. ; Bassalleck, B. ; Basye, A. T. ; Bathe, S. ; Batsouli, S. ; Baublis, V. ; Baumann, Cédric ; Bazilevsky, A. ; Beaumier, M. ; Beckman, S. ; Belikov, S. ; Belmont, R. ; Bennett, R. ; Berdnikov, A. ; Berdnikov, Y. ; Bhom, J. H. ; Bickley, A. A. ; Black, D. ; Blau, D. S. ; Boissevain, J. G. ; Bok, J. S. ; Borel, H. ; Boyle, K. ; Brooks, M. L. ; Bryslawskyj, J. ; Buesching, H. ; Bumazhnov, V. ; Bunce, G. ; Butsyk, S. ; Campbell, S. ; Caringi, A. ; Chang, B. S. ; Charvet, J.-L. ; Chen, C.-H. ; Chernichenko, S. ; Chi, C. Y. ; Chiba, J. ; Chiu, M. ; Choi, I. J. ; Choi, J. B. ; Choudhury, R. K. ; Christiansen, P. ; Chujo, T. ; Chung, P. ; Churyn, A. ; Chvala, O. ; Cianciolo, V. ; Citron, Z. ; Cleven, C. R. ; Cole, B. A. ; Comets, M. P. ; Conesa del Valle, Z. ; Connors, M. ; Constantin, P. ; Csanád, M. ; Csörgő, T. ; Dahms, T. ; Dairaku, S. ; Danchev, I. ; Das, K. ; Datta, A. ; Daugherity, M. S. ; David, G. ; Dayananda, M. K. ; Deaton, M. B. ; Deblasio, K. ; Dehmelt, K. ; Delagrange, H. ; Denisov, A. ; d'Enterria, D.

Physical review. C, 2014-11, Vol.90 (5) [Periódico revisado por pares]

American Physical Society

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Título:
Measurement of $K_S^0$ and $K^{0}$ in $p$$+$$p$, $d$$+$Au, and Cu$+$Cu collisions at $\sqrt{s_{_{NN}}}=200$ GeV
Autor: Adare, A. ; Afanasiev, S. ; Aidala, C. ; Ajitanand, N. N. ; Akiba, Y. ; Akimoto, R. ; Al-Bataineh, H. ; Alexander, J. ; Alfred, M. ; Angerami, A. ; Aoki, K. ; Apadula, N. ; Aphecetche, Laurent ; Aramaki, Y. ; Armendariz, R. ; Aronson, S. H. ; Asai, J. ; Asano, H. ; Atomssa, E. T. ; Averbeck, R. ; Awes, T. C. ; Azmoun, B. ; Babintsev, V. ; Bai, M. ; Baksay, G. ; Baksay, L. ; Baldisseri, A. ; Bandara, N. S. ; Bannier, B. ; Barish, K. N. ; Barnes, P. D. ; Bassalleck, B. ; Basye, A. T. ; Bathe, S. ; Batsouli, S. ; Baublis, V. ; Baumann, Cédric ; Bazilevsky, A. ; Beaumier, M. ; Beckman, S. ; Belikov, S. ; Belmont, R. ; Bennett, R. ; Berdnikov, A. ; Berdnikov, Y. ; Bhom, J. H. ; Bickley, A. A. ; Black, D. ; Blau, D. S. ; Boissevain, J. G. ; Bok, J. S. ; Borel, H. ; Boyle, K. ; Brooks, M. L. ; Bryslawskyj, J. ; Buesching, H. ; Bumazhnov, V. ; Bunce, G. ; Butsyk, S. ; Campbell, S. ; Caringi, A. ; Chang, B. S. ; Charvet, J.-L. ; Chen, C.-H. ; Chernichenko, S. ; Chi, C. Y. ; Chiba, J. ; Chiu, M. ; Choi, I. J. ; Choi, J. B. ; Choudhury, R. K. ; Christiansen, P. ; Chujo, T. ; Chung, P. ; Churyn, A. ; Chvala, O. ; Cianciolo, V. ; Citron, Z. ; Cleven, C. R. ; Cole, B. A. ; Comets, M. P. ; Conesa del Valle, Z. ; Connors, M. ; Constantin, P. ; Csanád, M. ; Csörgő, T. ; Dahms, T. ; Dairaku, S. ; Danchev, I. ; Das, K. ; Datta, A. ; Daugherity, M. S. ; David, G. ; Dayananda, M. K. ; Deaton, M. B. ; Deblasio, K. ; Dehmelt, K. ; Delagrange, H. ; Denisov, A. ; d'Enterria, D.
Assuntos: Nuclear Experiment ; Physics
É parte de: Physical review. C, 2014-11, Vol.90 (5)
Descrição: The PHENIX experiment at the Relativistic Heavy Ion Collider has performed a systematic study of $K_S^0$ and $K^{*0}$ meson production at midrapidity in $p $, $d $Au, and Cu$+$Cu collisions at $\sqrt{s_{_{NN}}}=200$ GeV. The $K_S^0$ and $K^{*0}$ mesons are reconstructed via their $K_S^0 \rightarrow \pi^0(\rightarrow \gamma\gamma)\pi^0(\rightarrow\gamma\gamma)$ and $K^{*0} \rightarrow K^{\pm}\pi^{\mp}$ decay modes, respectively. The measured transverse-momentum spectra are used to determine the nuclear modification factor of $K_S^0$ and $K^{*0}$ mesons in $d $Au and Cu$+$Cu collisions at different centralities. In the $d $Au collisions, the nuclear modification factor of $K_S^0$ and $K^{*0}$ mesons is almost constant as a function of transverse momentum and is consistent with unity showing that cold-nuclear-matter effects do not play a significant role in the measured kinematic range. In Cu$+$Cu collisions, within the uncertainties no nuclear modification is registered in peripheral collisions. In central collisions, both mesons show suppression relative to the expectations from the $p $ yield scaled by the number of binary nucleon-nucleon collisions in the Cu$+$Cu system. In the $p_T$ range 2--5 GeV/$c$, the strange mesons ($K_S^0$, $K^{*0}$) similarly to the $\phi$ meson with hidden strangeness, show an intermediate suppression between the more suppressed light quark mesons ($\pi^0$) and the nonsuppressed baryons ($p$, $\bar{p}$). At higher transverse momentum, $p_T>5$ GeV/$c$, production of all particles is similarly suppressed by a factor of $\approx$ 2.
Editor: American Physical Society
Idioma: Inglês

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Measurement of $K_S^0$ and $K^{0}$ in $p$$+$$p$, $d$$+$Au, and Cu$+$Cu collisions at $\sqrt{s_{_{NN}}}=200$ GeV

American Physical Society

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